/*
 * NOMAD Certificate Verification System
 * Luxury Corporate Design System
 *
 * Color Palette:
 * - Primary Dark: #0d0d14 (deep space)
 * - Secondary Dark: #1a1a2e (midnight)
 * - Accent Gold: #c9a227 (luxury gold)
 * - Accent Light: #e8d48b (soft gold)
 * - Success: #2e7d32 (emerald)
 * - Warning: #f9a825 (amber)
 * - Error: #c62828 (ruby)
 */

/* ==================== CSS Variables ==================== */
:root {
    /* Primary Colors */
    --color-primary-dark: #0d0d14;
    --color-secondary-dark: #1a1a2e;
    --color-tertiary-dark: #252542;

    /* Accent Colors */
    --color-gold: #c9a227;
    --color-gold-light: #e8d48b;
    --color-gold-dark: #9a7b1a;

    /* Status Colors */
    --color-success: #2e7d32;
    --color-success-light: #4caf50;
    --color-success-bg: rgba(46, 125, 50, 0.1);

    --color-warning: #f9a825;
    --color-warning-light: #ffc107;
    --color-warning-bg: rgba(249, 168, 37, 0.1);

    --color-error: #c62828;
    --color-error-light: #ef5350;
    --color-error-bg: rgba(198, 40, 40, 0.1);

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-100: #f5f5f7;
    --color-gray-200: #e8e8ed;
    --color-gray-300: #d1d1d6;
    --color-gray-400: #a1a1a6;
    --color-gray-500: #6e6e73;
    --color-gray-600: #3a3a3c;
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-gold: 0 4px 20px rgba(201, 162, 39, 0.25);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08), 0 8px 32px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-gray-100);
    min-height: 100vh;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

.display-title {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.text-gold {
    color: var(--color-gold);
}

.text-muted {
    color: var(--color-text-secondary);
}

/* ==================== Verification Page Layout ==================== */
.verify-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
}

.verify-header {
    padding: var(--space-6) var(--space-4);
    text-align: center;
}

.verify-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
    max-height: 60px;
    height: auto;
    width: auto;
    max-width: 200px;
}

.verify-logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary-dark);
}

.verify-logo-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.05em;
}

.verify-logo-text span {
    color: var(--color-gold);
}

.verify-subtitle {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.verify-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

/* ==================== Certificate Card ==================== */
.certificate-card {
    width: 100%;
    max-width: 480px;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Status Banner */
.status-banner {
    padding: var(--space-8) var(--space-6);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.status-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    background: radial-gradient(circle at 30% 30%, currentColor 0%, transparent 70%);
}

.status-banner.status-valid {
    background: linear-gradient(135deg, var(--color-success) 0%, #1b5e20 100%);
    color: var(--color-white);
}

.status-banner.status-expired {
    background: linear-gradient(135deg, var(--color-warning) 0%, #f57f17 100%);
    color: var(--color-primary-dark);
}

.status-banner.status-revoked,
.status-banner.status-invalid {
    background: linear-gradient(135deg, var(--color-error) 0%, #b71c1c 100%);
    color: var(--color-white);
}

.status-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-4xl);
    backdrop-filter: blur(10px);
}

.status-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--space-2);
}

.status-message {
    font-size: var(--text-sm);
    opacity: 0.9;
}

/* Certificate Details */
.certificate-details {
    padding: var(--space-6);
}

.detail-row {
    display: flex;
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    flex: 0 0 140px;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.detail-value {
    flex: 1;
    font-weight: 500;
    color: var(--color-text-primary);
    word-break: break-word;
}

.detail-value.highlight {
    color: var(--color-gold-dark);
    font-weight: 600;
}

/* Certificate Footer */
.certificate-footer {
    padding: var(--space-6);
    background: var(--color-gray-100);
    border-top: 1px solid var(--color-gray-200);
}

.warning-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-align: center;
    line-height: 1.6;
}

.warning-text strong {
    color: var(--color-error);
    font-weight: 600;
}

/* Verify Footer */
.verify-footer {
    padding: var(--space-6) var(--space-4);
    text-align: center;
}

.verify-footer-text {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.verify-footer-link {
    color: var(--color-gold);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.verify-footer-link:hover {
    color: var(--color-gold-light);
}

/* ==================== Admin Layout ==================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-sticky);
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.sidebar-logo-text {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
}

.sidebar-logo-text span {
    color: var(--color-gold);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-400);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-gray-300);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-white);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: var(--color-primary-dark);
    font-weight: 600;
}

.nav-link-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
}

.sidebar-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--color-tertiary-dark);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-gold);
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
}

.admin-header {
    background: var(--color-white);
    padding: var(--space-4) var(--space-8);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.admin-header-title {
    font-size: var(--text-xl);
    font-weight: 600;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.admin-content {
    padding: var(--space-8);
}

/* ==================== Cards & Containers ==================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 600;
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--color-gray-100);
    border-top: 1px solid var(--color-gray-200);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}

.stat-card-icon.success { background: var(--color-success-bg); color: var(--color-success); }
.stat-card-icon.warning { background: var(--color-warning-bg); color: var(--color-warning); }
.stat-card-icon.error { background: var(--color-error-bg); color: var(--color-error); }
.stat-card-icon.primary { background: rgba(201, 162, 39, 0.1); color: var(--color-gold); }

.stat-card-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.stat-card-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: var(--color-primary-dark);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-gold);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-gray-200);
    color: var(--color-text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gray-300);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-error) 0%, #b71c1c 100%);
    color: var(--color-white);
}

.btn-danger:hover:not(:disabled) {
    box-shadow: 0 4px 20px rgba(198, 40, 40, 0.35);
}

.btn-outline {
    background: #ac8a1f;
    border: 2px solid var(--color-gray-300);
    color: #ffffff;
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

/* ==================== Forms ==================== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-error {
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-top: var(--space-2);
}

.form-hint {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-gold);
}

/* ==================== Tables ==================== */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
}

.table th {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-gray-100);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--color-gray-100);
}

.table td {
    font-size: var(--text-sm);
}

/* ==================== Status Badges ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.badge-valid {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-expired {
    background: var(--color-warning-bg);
    color: #b7791f;
}

.badge-revoked,
.badge-invalid {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

/* ==================== Flash Messages ==================== */
.flash-messages {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-width: 400px;
}

.flash-message {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.flash-message.success {
    background: var(--color-success);
    color: var(--color-white);
}

.flash-message.error {
    background: var(--color-error);
    color: var(--color-white);
}

.flash-message.warning {
    background: var(--color-warning);
    color: var(--color-primary-dark);
}

.flash-message.info {
    background: var(--color-secondary-dark);
    color: var(--color-white);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    padding: 0;
    font-size: var(--text-lg);
    line-height: 1;
}

.flash-close:hover {
    opacity: 1;
}

/* ==================== Pagination ==================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
}

.pagination-link,
.pagination-current {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.pagination-link {
    color: var(--color-text-primary);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
}

.pagination-link:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gold);
}

.pagination-current {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: var(--color-primary-dark);
}

.pagination-ellipsis {
    color: var(--color-text-secondary);
}

/* ==================== Login Page ==================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    padding: var(--space-4);
    flex-direction: column;
}


.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.login-header {
    padding: var(--space-8) var(--space-8) var(--space-6);
    text-align: center;
    background: linear-gradient(135deg, var(--color-secondary-dark) 0%, var(--color-tertiary-dark) 100%);
}

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary-dark);
}

.login-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.login-subtitle {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.login-body {
    padding: var(--space-8);
}

.login-form .form-group:last-of-type {
    margin-bottom: var(--space-6);
}

.login-submit {
    width: 100%;
}

/* ==================== Empty States ==================== */
.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--color-gray-300);
    margin-bottom: var(--space-4);
}

.empty-state-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

/* ==================== Search & Filters ==================== */
.search-bar {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
}

.search-input-wrapper .form-input {
    padding-left: var(--space-10);
}

.search-input-wrapper::before {
    content: '🔍';
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-base);
}

.filter-buttons {
    display: flex;
    gap: var(--space-2);
}

.filter-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    border: 2px solid var(--color-gray-200);
    background: var(--color-white);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: var(--color-text-secondary);
}

.filter-btn:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

.filter-btn.active {
    background: var(--color-gold);
    border-color: var(--color-gold);
    color: var(--color-primary-dark);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 1024px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.open {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

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

@media (max-width: 768px) {
    .admin-content {
        padding: var(--space-4);
    }

    .admin-header {
        padding: var(--space-4);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .search-bar {
        flex-direction: column;
    }

    .filter-buttons {
        flex-wrap: wrap;
    }

    .table th,
    .table td {
        padding: var(--space-3);
    }

    .detail-row {
        flex-direction: column;
        gap: var(--space-1);
    }

    .detail-label {
        flex: none;
    }
}

@media (max-width: 480px) {
    .certificate-card {
        border-radius: var(--radius-xl);
    }

    .status-banner {
        padding: var(--space-6) var(--space-4);
    }

    .status-icon {
        width: 64px;
        height: 64px;
        font-size: var(--text-3xl);
    }

    .status-title {
        font-size: var(--text-xl);
    }

    .certificate-details {
        padding: var(--space-4);
    }

    .login-body {
        padding: var(--space-6);
    }

    .flash-messages {
        left: var(--space-4);
        right: var(--space-4);
        max-width: none;
    }
}

/* ==================== Print Styles ==================== */
@media print {
    .admin-sidebar,
    .admin-header,
    .flash-messages,
    .btn,
    .pagination {
        display: none !important;
    }

    .admin-main {
        margin-left: 0;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--color-gray-300);
    }
}