:root {
    --primary-color: #0066CC;
    --primary-dark: #0052A3;
    --primary-light: #E6F0FA;
    --secondary-color: #1A1A2E;
    --accent-color: #00A86B;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --border-radius: 0.75rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
}

.font-mono {
    font-family: 'Roboto Mono', monospace;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.5rem;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand svg {
    width: 24px;
    height: 24px;
}

.nav-link {
    color: var(--gray-600) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--primary-light);
}

.nav-link.active {
    color: var(--primary-color) !important;
    background-color: var(--primary-light);
}

/* Buttons */
.btn {
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    transform: scale(1);
}

.btn:active {
    transform: scale(0.92);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.3);
}

.btn.btn-clicked {
    animation: btnPulse 0.3s ease-out;
}

@keyframes btnPulse {
    0% { transform: scale(1); }
    50% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

.btn.btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn.btn-loading::after {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: btnSpin 0.6s linear infinite;
    margin-left: 0.5rem;
}

@keyframes btnSpin {
    to { transform: rotate(360deg); }
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-secondary {
    background-color: white;
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-secondary:hover {
    border-color: var(--gray-400);
    background-color: var(--gray-50);
    color: var(--gray-800);
}

.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-danger {
    background-color: var(--error-color);
    border-color: var(--error-color);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Quick Resource Category Buttons */
.btn-category {
    font-weight: 600;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    color: white !important;
    border: none;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.btn-category:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white !important;
}

.btn-category:active {
    transform: translateY(0);
}

.btn-category svg {
    stroke: white;
}

.btn-category-red {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
}

.btn-category-red:hover {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
}

.btn-category-green {
    background: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
}

.btn-category-green:hover {
    background: linear-gradient(135deg, #16A34A 0%, #15803D 100%);
}

.btn-category-purple {
    background: linear-gradient(135deg, #A855F7 0%, #9333EA 100%);
}

.btn-category-purple:hover {
    background: linear-gradient(135deg, #9333EA 0%, #7E22CE 100%);
}

.btn-category-orange {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
}

.btn-category-orange:hover {
    background: linear-gradient(135deg, #EA580C 0%, #C2410C 100%);
}

.btn-category-blue {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
}

.btn-category-blue:hover {
    background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
}

/* Quick Resources Dropdown */
.resource-dropdown {
    position: relative;
    display: inline-block;
}

.resource-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background: transparent;
    z-index: 100;
    padding-top: 8px;
}

.resource-dropdown-content-inner {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.resource-dropdown:hover .resource-dropdown-content,
.resource-dropdown:focus-within .resource-dropdown-content {
    display: block;
}

.resource-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--gray-700);
    text-decoration: none;
    transition: background 0.15s;
    border-bottom: 1px solid var(--gray-100);
}

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

.resource-dropdown-item:hover {
    background-color: var(--gray-50);
    color: var(--gray-900);
}

.resource-dropdown-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.resource-dropdown-empty {
    padding: 1rem;
    color: var(--gray-500);
    text-align: center;
    font-style: italic;
}

/* Cards */
.card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.card-body {
    padding: 1.5rem;
}

.card-hover:hover {
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.2s;
}

/* Stats Cards */
.stat-card {
    padding: 1.5rem;
    border-radius: var(--border-radius);
    background: white;
    border: 1px solid var(--gray-200);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* Form Elements */
.form-control, .form-select {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-300);
    font-size: 1rem;
    transition: all 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-text {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-weight: 500;
    font-size: 0.75rem;
}

.badge-active {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-expired {
    background-color: var(--gray-100);
    color: var(--gray-600);
}

.badge-used {
    background-color: #DBEAFE;
    color: #1E40AF;
}

.badge-revoked {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* Tables */
.table {
    background: white;
}

.table thead th {
    background-color: var(--gray-50);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
    background-color: var(--gray-50);
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    background: var(--gray-50);
    transition: all 0.3s;
    cursor: pointer;
}

.upload-zone:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.upload-zone.drag-over {
    border-color: var(--primary-color);
    background: var(--primary-light);
    transform: scale(1.02);
}

.upload-zone .upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--gray-400);
}

.upload-zone h4 {
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.upload-zone p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* File List */
.file-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
}

.file-item .file-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    color: var(--primary-color);
}

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

.file-item .file-name {
    font-weight: 500;
    color: var(--gray-800);
}

.file-item .file-size {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.file-item .file-remove {
    color: var(--gray-400);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s;
}

.file-item .file-remove:hover {
    color: var(--error-color);
    background: #FEE2E2;
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 9999px;
    background: var(--gray-200);
}

.progress-bar {
    background: var(--primary-color);
    border-radius: 9999px;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--gray-200);
    padding: 1.5rem;
}

/* Security Badges */
.security-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
}

.security-badge svg {
    width: 14px;
    height: 14px;
    color: var(--success-color);
}

/* Landing Page */
.landing-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.landing-hero .hero-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.landing-hero .hero-text {
    text-align: center;
    max-width: 600px;
}

.landing-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.landing-hero p {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* Customer Upload Page */
.customer-page {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
    min-height: 100vh;
}

.customer-header {
    background: white;
    padding: 1rem 2rem;
    box-shadow: var(--shadow-sm);
}

.customer-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.trust-indicators {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

/* Success State */
.success-checkmark {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--success-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    animation: scaleIn 0.3s ease-out;
}

.success-checkmark svg {
    width: 40px;
    height: 40px;
    color: white;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Link Copy Box */
.link-copy-box {
    display: flex;
    align-items: stretch;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 0.5rem;
    overflow: hidden;
}

.link-copy-box input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem 1rem;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.link-copy-box input:focus {
    outline: none;
}

.link-copy-box button {
    padding: 0.75rem 1.25rem;
    background: var(--primary-color);
    color: white;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.link-copy-box button:hover {
    background: var(--primary-dark);
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--gray-200);
}

.user-name {
    font-weight: 500;
    color: var(--gray-700);
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
}

.alert-warning {
    background: #FEF3C7;
    color: #92400E;
}

/* Footer */
.footer {
    background: white;
    border-top: 1px solid var(--gray-200);
    padding: 2rem;
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer a {
    color: var(--gray-600);
    text-decoration: none;
}

.footer a:hover {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .landing-hero h1 {
        font-size: 2rem;
    }
    
    .trust-indicators {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-card {
        margin-bottom: 1rem;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.empty-state h4 {
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

/* Expiration countdown */
.expiration-warning {
    background: #FEF3C7;
    border: 1px solid #F59E0B;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #92400E;
    font-size: 0.875rem;
}

.expiration-warning svg {
    flex-shrink: 0;
}