/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Wider container for buyer marketplace to match seller dashboard width */
.buyer-main .container {
    max-width: 1400px;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #10b981;
    text-decoration: none;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #10b981;
}

.nav-links .mode-switch {
    background: #f3f4f6;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s;
}

.nav-links .mode-switch:hover {
    background: #10b981;
    color: white !important;
}

.nav-links .sign-out-btn {
    color: #ef4444;
}

.nav-links .sign-out-btn:hover {
    color: #dc2626 !important;
}

/* User Profile Dropdown */
.user-profile-dropdown {
    position: relative;
}

.user-profile-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #f3f4f6;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
    color: #1f2937;
    font-weight: 500;
    font-size: 0.95rem;
}

.user-profile-btn:hover {
    background: #10b981;
    color: white;
}

.user-profile-btn i:first-child {
    font-size: 1.2rem;
}

.user-profile-btn i:last-child {
    font-size: 0.75rem;
    transition: transform 0.3s;
}

.user-profile-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    min-width: 320px;
    z-index: 1000;
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.profile-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s;
    border-radius: 8px 8px 0 0;
}

.profile-header:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
}

.profile-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.profile-email {
    font-size: 0.875rem;
    opacity: 0.9;
}

.profile-details {
    padding: 1rem 1.5rem;
}

.profile-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f3f4f6;
}

.profile-detail-item:last-of-type {
    border-bottom: none;
}

.profile-detail-item i {
    color: #10b981;
    font-size: 1.1rem;
    width: 20px;
    margin-top: 2px;
}

.profile-detail-item > div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-label {
    font-size: 0.75rem;
    color: #6b7280;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 0.9rem;
    color: #1f2937;
    font-weight: 500;
}

.profile-divider {
    height: 1px;
    background: #e5e7eb;
    margin: 0.5rem 0;
}

.profile-signout-btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: transparent;
    border: none;
    color: #ef4444;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.profile-signout-btn:hover {
    background: #fef2f2;
    color: #dc2626;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #10b981;
    color: white;
}

.btn-primary:hover {
    background: #059669;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #64748b;
    color: white;
}

.btn-secondary:hover {
    background: #475569;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 4rem 0;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.highlight {
    color: #fbbf24;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #fbbf24;
}

.floating-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1f2937;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #f8fafc;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: #10b981;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.about-text p {
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    color: #10b981;
    font-weight: bold;
}

.stat p {
    color: #64748b;
    font-weight: 500;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #10b981;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #10b981;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: #374151;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: background 0.3s;
}

.social-links a:hover {
    background: #10b981;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Seller Dashboard */
.seller-main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.seller-header {
    text-align: center;
    margin-bottom: 3rem;
}

.seller-header h1 {
    font-size: 2.5rem;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.seller-header p {
    color: #64748b;
    font-size: 1.1rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: 1.8rem;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: #64748b;
    font-weight: 500;
}

/* Tabs */
.content-tabs {
    display: flex;
    background: white;
    border-radius: 1rem;
    padding: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: transparent;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tab-btn.active {
    background: #10b981;
    color: white;
}

.tab-btn:not(.active):hover {
    background: #f3f4f6;
}

.tab-content {
    display: none;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.tab-content.active {
    display: block;
}

/* Upload Section */
.upload-section h2 {
    margin-bottom: 1rem;
    color: #1f2937;
}

.upload-section p {
    color: #64748b;
    margin-bottom: 2rem;
}

.csv-template {
    background: #f8fafc;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.csv-template h3 {
    margin-bottom: 1rem;
    color: #1f2937;
}

.columns-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.column-tag {
    background: #10b981;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.upload-area {
    border: 2px dashed #d1d5db;
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 2rem;
}

.upload-area:hover {
    border-color: #10b981;
    background: #f0fdf4;
}

.upload-area.dragover {
    border-color: #10b981;
    background: #f0fdf4;
    transform: scale(1.02);
}

.upload-content i {
    font-size: 3rem;
    color: #10b981;
    margin-bottom: 1rem;
}

.upload-content h3 {
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.upload-link {
    color: #10b981;
    cursor: pointer;
    text-decoration: underline;
}

.upload-actions {
    text-align: center;
}

.upload-progress {
    margin-top: 2rem;
}

.progress-bar {
    width: 100%;
    height: 0.5rem;
    background: #e5e7eb;
    border-radius: 0.25rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: #10b981;
    width: 0%;
    transition: width 0.3s;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Form Styles */
.item-form {
    max-width: 800px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Inventory Grid */
.inventory-section {
    max-width: 100%;
}

.inventory-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.inventory-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.inventory-controls select,
.inventory-controls input {
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
}

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.inventory-item {
    background: #f8fafc;
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid #e5e7eb;
    transition: transform 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.inventory-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.item-category {
    background: #10b981;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.item-details h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.item-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.item-price {
    text-align: right;
    margin-top: 1rem;
}

.item-price .price {
    font-size: 1.3rem;
    font-weight: bold;
    color: #10b981;
}

.no-inventory {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: #64748b;
}

.no-inventory i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Buyer Marketplace */
.buyer-main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.buyer-header {
    text-align: center;
    margin-bottom: 3rem;
}

.buyer-header h1 {
    font-size: 2.5rem;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.buyer-header p {
    color: #64748b;
    font-size: 1.1rem;
}

.marketplace-controls {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.search-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-bar {
    position: relative;
    flex: 1;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #64748b;
}

.search-bar input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.search-bar input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters select {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    background: white;
}

.marketplace-content {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.category-sidebar {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    height: fit-content;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.category-sidebar h3 {
    margin-bottom: 1rem;
    color: #1f2937;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-item {
    padding: 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-item:hover {
    background: #f3f4f6;
}

.category-item.active {
    background: #10b981;
    color: white;
}

.category-count {
    font-size: 0.8rem;
    background: rgba(255,255,255,0.2);
    padding: 0.25rem 0.5rem;
    border-radius: 1rem;
}

.products-section {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.products-header h2 {
    color: #1f2937;
}

.products-header span {
    color: #64748b;
    font-weight: 500;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.product-card {
    border: 1px solid #e5e7eb;
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-color: #10b981;
}

.product-image {
    height: 200px;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    font-size: 3rem;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.product-category {
    background: #10b981;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.product-brand {
    color: #64748b;
    font-weight: 500;
    margin-bottom: 1rem;
}

.product-specs {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.product-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #64748b;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    font-size: 1.4rem;
    font-weight: bold;
    color: #10b981;
}

.add-to-cart {
    background: #10b981;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.3s;
    font-weight: 600;
}

.add-to-cart:hover {
    background: #059669;
}

.cart-quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f3f4f6;
    padding: 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid #d1d5db;
    opacity: 1;
    visibility: visible;
}

.qty-btn {
    background: #059669;
    color: white;
    border: none;
    width: 2rem;
    height: 2rem;
    border-radius: 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: bold;
    transition: background 0.2s;
    line-height: 1;
}

.qty-btn:hover:not(:disabled) {
    background: #047857;
}

.qty-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

.cart-qty {
    font-weight: 600;
    min-width: 2rem;
    text-align: center;
    color: #374151;
}

.self-item-notice {
    background: #fef3c7;
    color: #92400e;
    padding: 0.5rem;
    border-radius: 0.375rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid #fbbf24;
}

/* Notifications */
.notification-badge {
    background: #ef4444;
    color: white;
    border-radius: 50%;
    padding: 0.125rem 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.25rem;
}

.notifications-section {
    padding: 1.5rem;
}

.notifications-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.notifications-list {
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 1rem;
    border-bottom: 1px solid #f3f4f6;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    transition: background-color 0.2s;
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item.unread {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
}

.notification-item:hover {
    background: #f9fafb;
}

.notification-icon {
    color: #10b981;
    font-size: 1.25rem;
    margin-top: 0.25rem;
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.25rem;
}

.notification-message {
    color: #6b7280;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.notification-time {
    color: #9ca3af;
    font-size: 0.75rem;
}

.notification-status {
    display: inline-block;
    background: #10b981;
    color: white;
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.no-notifications {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
}

.no-notifications i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.loading-state, .no-products {
    text-align: center;
    padding: 3rem;
    color: #64748b;
    grid-column: 1 / -1;
}

.loading-state i, .no-products i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Cart Sidebar */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    z-index: 2000;
    transition: right 0.3s;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3 {
    color: #1f2937;
}

.cart-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
}

.cart-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cart-items {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.cart-item-info {
    flex: 1;
}

.cart-item-info h4 {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    color: #1f2937;
}

.cart-item-meta {
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 0.5rem;
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.qty-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.qty-btn {
    width: 2rem;
    height: 2rem;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: 0.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background: #f3f4f6;
}

.cart-item-price {
    text-align: right;
    font-weight: bold;
    color: #10b981;
}

.remove-item {
    background: #ef4444;
    color: white;
    border: none;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.empty-cart {
    text-align: center;
    padding: 3rem 1rem;
    color: #64748b;
}

.empty-cart i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid #e5e7eb;
    background: #f8fafc;
}

.cart-summary {
    margin-bottom: 1.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.summary-row.total {
    font-weight: bold;
    font-size: 1.1rem;
    color: #1f2937;
    border-top: 1px solid #e5e7eb;
    padding-top: 0.5rem;
    margin-top: 1rem;
}

.cart-actions {
    display: flex;
    gap: 0.5rem;
}

.cart-actions .btn {
    flex: 1;
    justify-content: center;
    padding: 0.75rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: #1f2937;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
}

.modal-body {
    padding: 1.5rem;
}

.order-summary {
    background: #f8fafc;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.order-summary h4 {
    margin-bottom: 1rem;
    color: #1f2937;
}

.checkout-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.checkout-item:last-child {
    border-bottom: none;
}

.summary-totals {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

/* Notification */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: #10b981;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    transform: translateX(400px);
    transition: transform 0.3s;
    z-index: 4000;
}

.notification.show {
    transform: translateX(0);
}

.notification.error {
    background: #ef4444;
}

.notification.success {
    background: #10b981;
}

/* Authentication Styles */
.auth-main {
    padding: 4rem 0;
    min-height: calc(100vh - 80px);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
}

.auth-container {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.auth-tabs {
    display: flex;
    background: #f8fafc;
}

.auth-tabs .tab-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: transparent;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.auth-tabs .tab-btn.active {
    background: white;
    color: #10b981;
}

.auth-form {
    display: none;
    padding: 2rem;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.auth-form p {
    color: #64748b;
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.full-width {
    width: 100%;
}

/* Project Management */
.project-management {
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.project-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.project-selector label {
    font-weight: 600;
    color: #374151;
}

.project-selector select {
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    min-width: 200px;
}

/* Enhanced Inventory Controls */
.inventory-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.view-toggle {
    display: flex;
    background: #f3f4f6;
    border-radius: 0.5rem;
    padding: 0.25rem;
}

.view-btn {
    padding: 0.5rem 0.75rem;
    border: none;
    background: transparent;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.3s;
    color: #64748b;
}

.view-btn.active {
    background: #10b981;
    color: white;
}

.view-btn:hover:not(.active) {
    background: #e5e7eb;
}

/* Table View */
.inventory-table {
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: #f8fafc;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: #374151;
    border-bottom: 1px solid #e5e7eb;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid #f3f4f6;
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: #f8fafc;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-resale {
    background: #d1fae5;
    color: #065f46;
}

.status-internal_transfer {
    background: #fef3c7;
    color: #92400e;
}

.status-acquired {
    background: #e0f2fe;
    color: #0369a1;
}

.status-sold {
    background: #fee2e2;
    color: #991b1b;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.25rem 0.5rem;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s;
}

.action-btn.primary {
    background: #10b981;
    color: white;
}

.action-btn.primary:hover {
    background: #059669;
}

.action-btn.secondary {
    background: #6b7280;
    color: white;
}

.action-btn.secondary:hover {
    background: #4b5563;
}

.action-btn.danger {
    background: #ef4444;
    color: white;
}

.action-btn.danger:hover {
    background: #dc2626;
}

/* Enhanced inventory grid items */
.inventory-item {
    position: relative;
}

.inventory-item .item-photo {
    width: calc(100% + 3rem);
    height: 200px;
    margin: -1.5rem -1.5rem 1rem -1.5rem;
    background: #f3f4f6;
}

.inventory-item .item-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Photo Slideshow */
.item-photo-slideshow {
    width: calc(100% + 3rem);
    height: 200px;
    margin: -1.5rem -1.5rem 1rem -1.5rem;
    position: relative;
    background: #f3f4f6;
    overflow: hidden;
}

.slideshow-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.slideshow-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.slideshow-image.active {
    opacity: 1;
}

.slideshow-prev,
.slideshow-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    z-index: 2;
    transition: background 0.3s;
}

.slideshow-prev:hover,
.slideshow-next:hover {
    background: rgba(0, 0, 0, 0.7);
}

.slideshow-prev {
    left: 10px;
}

.slideshow-next {
    right: 10px;
}

.slideshow-indicators {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 5px;
    z-index: 2;
}

.slideshow-indicators .indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s;
}

.slideshow-indicators .indicator.active {
    background: white;
}

/* Photo Input Groups */
.photo-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.photo-input-group input {
    flex: 1;
}

.photo-input-group button {
    padding: 0.5rem 1rem;
}

/* Photo Upload Options */
.photo-upload-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: flex-start;
}

.photo-upload-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: 0 4px 6px rgba(5, 150, 105, 0.2);
}

.photo-upload-btn:hover {
    background: linear-gradient(135deg, #047857 0%, #065f46 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(5, 150, 105, 0.3);
}

.photo-upload-btn i {
    font-size: 1.25rem;
}

.photo-upload-btn i.fa-camera {
    margin-right: -0.5rem;
}

.upload-hint {
    color: #6b7280;
    font-size: 0.875rem;
    margin-left: 0.5rem;
}

/* Photo Preview Grid */
.photo-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.photo-preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 0.5rem;
    overflow: hidden;
    border: 2px solid #e5e7eb;
}

.photo-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-preview-item .remove-photo {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.3s;
}

.photo-preview-item .remove-photo:hover {
    background: #dc2626;
}

.inventory-item .item-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0;
    transition: opacity 0.3s;
}

.inventory-item:hover .item-actions {
    opacity: 1;
}

.item-actions .dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-btn {
    background: rgba(255,255,255,0.9);
    border: 1px solid #e5e7eb;
    border-radius: 0.25rem;
    padding: 0.5rem;
    cursor: pointer;
    color: #64748b;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background: white;
    min-width: 180px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 0.5rem;
    z-index: 1000;
    border: 1px solid #e5e7eb;
}

.dropdown-content.show {
    display: block;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid #f3f4f6;
    transition: background 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: #f8fafc;
}

.dropdown-item.resale {
    color: #059669;
}

.dropdown-item.internal_transfer {
    color: #d97706;
}

.dropdown-item.sold {
    color: #dc2626;
}

.dropdown-item.delete {
    color: #ef4444;
}

.dropdown-item.delete:hover {
    background: #fef2f2;
}

/* CSV Upload Enhancement */
.csv-requirements {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.csv-requirements h4 {
    color: #0369a1;
    margin-bottom: 1rem;
}

.requirements-list {
    list-style: none;
    padding: 0;
}

.requirements-list li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.requirements-list li.required {
    color: #dc2626;
}

.requirements-list li.optional {
    color: #64748b;
}

.requirements-list li i {
    width: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .marketplace-content {
        grid-template-columns: 1fr;
    }
    
    .category-sidebar {
        order: 2;
    }
    
    .products-section {
        order: 1;
    }
    
    .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .content-tabs {
        flex-direction: column;
    }
    
    .search-section {
        flex-direction: column;
    }
    
    .filters {
        flex-direction: column;
    }
}
/* Enhanced Security Styles */

/* Enhanced Password Input */
.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input input {
    flex: 1;
    padding-right: 3rem;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    transition: color 0.3s;
}

.password-toggle:hover {
    color: #10b981;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 0.5rem;
}

.strength-bar {
    height: 4px;
    border-radius: 2px;
    margin-bottom: 0.5rem;
    transition: all 0.3s;
}

.strength-bar.strength-weak {
    background: linear-gradient(to right, #ef4444 30%, #f3f4f6 30%);
}

.strength-bar.strength-medium {
    background: linear-gradient(to right, #f59e0b 60%, #f3f4f6 60%);
}

.strength-bar.strength-strong {
    background: #10b981;
}

.strength-text {
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}

.strength-text .weak {
    color: #ef4444;
}

.strength-text .medium {
    color: #f59e0b;
}

.strength-text .strong {
    color: #10b981;
}

.strength-requirements {
    font-size: 0.75rem;
    color: #64748b;
    line-height: 1.4;
}

/* Enhanced Checkbox */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #d1d5db;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #10b981;
    border-color: #10b981;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Auth Footer */
.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #f3f4f6;
}

.auth-footer a {
    color: #10b981;
    text-decoration: none;
    font-size: 0.9rem;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Security Information Section */
.security-info {
    max-width: 600px;
    margin: 3rem auto 0;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    text-align: center;
}

.security-info h3 {
    color: #1f2937;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.security-info h3 i {
    color: #10b981;
}

.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.security-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: #f8fafc;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.security-feature i {
    color: #10b981;
    width: 1.25rem;
}

/* Enhanced Form Validation */
.form-group input.invalid,
.form-group select.invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group input.valid,
.form-group select.valid {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Loading States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:disabled i.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced Notifications */
.notification.info {
    background: #3b82f6;
}

.notification.warning {
    background: #f59e0b;
}

/* Forgot Password Modal Enhancements */
.modal-content {
    max-width: 450px;
}

.modal-header h3 {
    color: #1f2937;
}

.modal-body p {
    color: #64748b;
    margin-bottom: 1.5rem;
}

/* Listing ID Styles */
.listing-id, .material-id {
    font-size: 0.75rem;
    color: #6b7280;
    background: #f3f4f6;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    display: inline-block;
    margin: 0.25rem 0.25rem 0.25rem 0;
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

.material-id {
    background: #e0f2fe;
    color: #0277bd;
}

.item-ids {
    margin: 0.5rem 0;
}

.bid-actions {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid #e5e7eb;
}

/* Bidding System Styles */
.bids-section, .orders-section, .history-section {
    padding: 2rem;
}

/* Order Subtabs */
.order-subtabs {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    border-bottom: 2px solid #e5e7eb;
}

.order-subtab {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    color: #6b7280;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
}

.order-subtab:hover {
    color: #059669;
}

.order-subtab.active {
    color: #059669;
}

.order-subtab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #059669;
}

.order-subtab-content {
    display: none;
}

.order-subtab-content.active {
    display: block;
}

/* Order History Item */
.order-history-item {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.order-history-item .order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.order-history-item h4 {
    margin: 0;
    color: #1f2937;
}

.order-history-item .order-date {
    color: #6b7280;
    font-size: 0.875rem;
}

.order-history-item .order-details p {
    margin: 0.5rem 0;
    color: #4b5563;
}

/* Internal Transfer Styling */
.order-history-item.internal-transfer {
    background: #f0fdf4;
    border-color: #86efac;
}

.order-history-item.internal-transfer .status-badge {
    background: #22c55e;
    color: white;
}

.material-bid-group {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.material-header {
    display: flex;
    justify-content: between;
    align-items: flex-start;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f3f4f6;
}

.material-info h4 {
    margin: 0 0 0.5rem 0;
    color: #1f2937;
}

.current-price {
    color: #059669;
    font-weight: 600;
    font-size: 0.875rem;
}

.bid-summary {
    text-align: right;
}

.highest-bid {
    font-size: 1.5rem;
    font-weight: bold;
    color: #dc2626;
}

.top-bid {
    background: #f9fafb;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.bid-details {
    font-size: 0.875rem;
    line-height: 1.6;
}

.bid-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* Material Bids Modal */
.modal-content.large {
    max-width: 1000px;
    width: 90%;
    max-height: 95vh;
}

.modal-content.large .modal-body {
    max-height: calc(95vh - 100px);
    overflow-y: auto;
}

.material-details {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.material-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

.material-meta span {
    color: #6b7280;
}

.bid-item {
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

.bid-item:hover {
    border-color: #3b82f6;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.bid-item.highest-bid {
    border-color: #dc2626;
    background: #fef2f2;
}

.bid-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #f3f4f6;
}

.bid-rank {
    background: #3b82f6;
    color: white;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.875rem;
}

.bid-item.highest-bid .bid-rank {
    background: #dc2626;
}

.bid-amount {
    font-size: 1.25rem;
    font-weight: bold;
    color: #059669;
}

.bid-total {
    font-size: 0.875rem;
    color: #6b7280;
}

.bid-buyer-info {
    font-size: 0.875rem;
    line-height: 1.6;
    color: #374151;
    margin-bottom: 0.75rem;
}

.bid-date {
    color: #9ca3af;
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
}

.bid-item-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.modal-actions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e5e7eb;
    text-align: center;
}

.no-bids {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
}

.no-bids i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-bids p {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

.no-bids small {
    font-size: 0.875rem;
    color: #9ca3af;
}

.orders-controls, .history-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.filter-group select,
.filter-group input {
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.orders-list, .history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.order-card, .transaction-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.order-card:hover, .transaction-card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.order-header, .transaction-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.order-info h4 {
    margin: 0 0 0.5rem 0;
    color: #1f2937;
}

.order-status {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending {
    background: #fef3c7;
    color: #d97706;
}

.status-approved {
    background: #d1fae5;
    color: #065f46;
}

.status-declined {
    background: #fee2e2;
    color: #dc2626;
}

.status-completed {
    background: #dbeafe;
    color: #1d4ed8;
}

.order-amount, .transaction-amount {
    font-size: 1.25rem;
    font-weight: bold;
    color: #059669;
}

.order-details {
    margin-bottom: 1rem;
}

.buyer-info {
    background: #f9fafb;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.5;
}

.order-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* Transaction History Styles */
.transaction-type {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.transaction-type i {
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.type-label {
    font-weight: 600;
    color: #374151;
}

.material-info {
    margin-bottom: 0.5rem;
}

.material-info strong {
    color: #1f2937;
}

.transaction-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #6b7280;
}

.transaction-date {
    color: #9ca3af;
    font-size: 0.75rem;
}

/* Order Review Modal Styles */
.order-review-details {
    margin-bottom: 1.5rem;
}

.order-review-details h4 {
    color: #1f2937;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.buyer-details, .order-summary {
    background: #f9fafb;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.buyer-details h5, .order-summary h5 {
    margin: 0 0 0.75rem 0;
    color: #374151;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.buyer-details p, .order-summary p {
    margin: 0.25rem 0;
    font-size: 0.875rem;
    line-height: 1.4;
}

.buyer-details strong, .order-summary strong {
    color: #1f2937;
    min-width: 120px;
    display: inline-block;
}

/* No content states */
.no-orders, .no-history {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
}

.no-orders i, .no-history i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-orders p, .no-history p {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

.no-orders small, .no-history small {
    font-size: 0.875rem;
    color: #9ca3af;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .auth-container {
        margin: 1rem;
        max-width: none;
    }
    
    .security-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    

}

/* Edit Material Styles */
.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    min-height: 36px;
}

.btn-sm:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-danger {
    background-color: #ef4444;
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.item-actions {
    padding: 12px;
    border-top: 1px solid #e5e7eb;
    background-color: #f9fafb;
    margin-top: auto;
}

/* Edit Lock Indicators */
.editing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.locked-item-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    font-size: 14px;
}

/* Inventory Item Improvements */
.inventory-item {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.inventory-item .item-details {
    flex-grow: 1;
}

/* Enhanced Quantity Controls for Buyer Interface */
.cart-quantity-controls-enhanced {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 2px;
}

.add-to-cart-container {
    width: 100%;
}

.qty-selector {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.qty-input, .qty-input-small {
    width: 60px;
    padding: 8px;
    text-align: center;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    background: white;
    transition: all 0.2s ease;
    -moz-appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button,
.qty-input-small::-webkit-outer-spin-button,
.qty-input-small::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.qty-input:focus, .qty-input-small:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.qty-input-small {
    width: 50px;
    padding: 6px;
}

.add-to-cart-btn {
    flex: 1;
    padding: 8px 12px;
    background: #10b981;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.add-to-cart-btn:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Better visibility for quantity buttons */
.cart-quantity-controls-enhanced .qty-btn {
    width: 36px !important;
    height: 36px !important;
    border: none !important;
    background: white !important;
    border-radius: 6px !important;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: #374151 !important;
    font-size: 16px !important;
}

.cart-quantity-controls-enhanced .qty-btn.minus {
    background: #fee2e2 !important;
    color: #dc2626 !important;
}

.cart-quantity-controls-enhanced .qty-btn.minus:hover:not(:disabled) {
    background: #dc2626 !important;
    color: white !important;
    transform: scale(1.05);
}

.cart-quantity-controls-enhanced .qty-btn.plus {
    background: #dcfce7 !important;
    color: #16a34a !important;
}

.cart-quantity-controls-enhanced .qty-btn.plus:hover:not(:disabled) {
    background: #16a34a !important;
    color: white !important;
    transform: scale(1.05);
}

.cart-quantity-controls-enhanced .qty-btn:disabled {
    opacity: 0.4 !important;
    cursor: not-allowed !important;
    background: #f3f4f6 !important;
    color: #9ca3af !important;
}

.cart-quantity-controls-enhanced .qty-btn i {
    font-size: 14px;
    pointer-events: none;
}

/* Cart sidebar quantity controls */
.qty-control-enhanced {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 2px;
}

.qty-btn-cart {
    width: 30px;
    height: 30px;
    border: none;
    background: white;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: #6b7280;
    font-size: 14px;
}

.qty-btn-cart:hover:not(:disabled) {
    background: #10b981;
    color: white;
    transform: scale(1.05);
}

.qty-btn-cart:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: #f3f4f6;
}

.qty-btn-cart i {
    font-size: 12px;
    pointer-events: none;
}

.qty-input-cart {
    width: 50px;
    padding: 4px;
    text-align: center;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    background: white;
    -moz-appearance: textfield;
}

.qty-input-cart::-webkit-outer-spin-button,
.qty-input-cart::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.qty-input-cart:focus {
    outline: none;
    border-color: #10b981;
}

/* Remove item button improvement */
.cart-item-controls .remove-item {
    padding: 6px 10px;
    background: #fee2e2;
    color: #dc2626;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.cart-item-controls .remove-item:hover {
    background: #dc2626;
    color: white;
}

.cart-item-controls .remove-item i {
    font-size: 11px;
}

/* Dark Mode Support (for future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here */
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    /* Navigation */
    .nav {
        flex-direction: column;
        padding: 1rem 0;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0.5rem;
        margin-top: 1rem;
    }
    
    .nav-links a {
        padding: 0.75rem;
        width: 100%;
        text-align: center;
        border-radius: 0.5rem;
    }
    
    /* Dashboard Stats */
    .dashboard-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    /* Content Tabs */
    .content-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.5rem;
    }
    
    .tab-btn {
        white-space: nowrap;
        min-width: fit-content;
    }
    
    /* Inventory Grid */
    .inventory-grid {
        grid-template-columns: 1fr;
    }
    
    /* Forms */
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    /* Modals */
    .modal-content {
        width: 95%;
        max-width: 100%;
        margin: 1rem;
        max-height: 90vh;
    }
    
    /* Photo Upload */
    .photo-upload-btn {
        width: 100%;
        justify-content: center;
        padding: 1.25rem 1.5rem;
        font-size: 1.1rem;
    }
    
    .upload-hint {
        text-align: center;
        width: 100%;
        margin: 0.5rem 0;
    }
    
    /* Filters */
    .inventory-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .inventory-controls select,
    .inventory-controls input {
        width: 100%;
    }
    
    /* Seller Header */
    .seller-header h1 {
        font-size: 1.5rem;
    }
    
    .project-selector {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .project-selector select {
        width: 100%;
    }
}

/* Profile Page Styles */
.profile-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e5e7eb;
}

.profile-tab {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: #6b7280;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    position: relative;
}

.profile-tab:hover {
    color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.profile-tab.active {
    color: #10b981;
    border-bottom-color: #10b981;
    font-weight: 600;
}

.profile-tab-content {
    display: none;
}

.profile-tab-content.active {
    display: block;
}

.tab-badge {
    background: #ef4444;
    color: white;
    border-radius: 10px;
    padding: 0.15rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.25rem;
}

.profile-menu-item:hover {
    background: #f3f4f6 !important;
}

.profile-menu-item {
    border-top: 1px solid #e5e7eb;
}

/* Touch-friendly adjustments */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
    }
    
    input, select, textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        min-height: 44px;
    }
}

/* Additional mobile polish */
@media (max-width: 768px) {
    /* Single-column grids for marketplace/admin cards */
    #products-grid, .products-grid, #materials-grid, .inventory-grid, .cards-grid {
        display: grid;
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
    .product-card, .material-card {
        border-radius: 12px;
        overflow: hidden;
    }
    .product-image, .material-card-image {
        height: 200px !important;
        object-fit: contain;
        background: #f3f4f6;
    }
    .product-info, .material-card-content { padding: 12px !important; }
    .product-footer { gap: 8px; flex-wrap: wrap; }

    /* Full-screen modals on small screens */
    .modal, .detail-modal, .view-modal, .material-details-modal, .profile-modal {
        width: 100% !important;
        max-width: 100% !important;
        height: 100% !important;
        max-height: 100% !important;
        margin: 0 !important;
        border-radius: 0 !important;
    }
    .detail-view-grid { display: flex; flex-direction: column; height: 100%; }
    .detail-view-image { height: 260px !important; flex: 0 0 auto; }
    .detail-view-info { flex: 1 1 auto; overflow: auto; padding-bottom: 72px; }
    .detail-actions, .cart-actions { position: sticky; bottom: 0; background: #fff; padding: 12px; border-top: 1px solid #e5e7eb; }

    /* Tables scroll horizontally */
    .table-container, .responsive-table-wrapper { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 640px; }

    /* Primary actions full width */
    .btn-primary, .btn-success, .btn-cta, .primary-action { width: 100%; }

    /* Filters/sidebars stack */
    .sidebar, .filters, .left-panel { position: static !important; width: 100% !important; max-width: 100% !important; }
}

@media (max-width: 480px) {
    .product-image, .material-card-image { height: 180px !important; }
}

/* Keep category filter visible; duplicates handled in JS */