/* pwdflash - Modern Glassmorphism & High-Aesthetic Design System */

:root {
    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Light Theme Colors */
    --bg-primary: #f0f4f8;
    --bg-secondary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --border-color: rgba(203, 213, 225, 0.6);
    --border-glow: rgba(99, 102, 241, 0.3);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --accent-primary: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --accent-secret: #8b5cf6;

    --success-color: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --danger-color: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --warning-color: #f59e0b;
    --info-color: #3b82f6;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 30px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.8);
    --bg-glass: rgba(30, 41, 59, 0.6);
    --border-color: rgba(51, 65, 85, 0.8);
    --border-glow: rgba(129, 140, 248, 0.4);

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    --accent-primary: #818cf8;
    --accent-hover: #6366f1;
    --accent-glow: rgba(129, 140, 248, 0.3);
    --accent-secret: #a78bfa;

    --success-color: #34d399;
    --success-bg: rgba(52, 211, 153, 0.2);
    --danger-color: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.2);
    --warning-color: #fbbf24;
    --info-color: #60a5fa;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 30px rgba(0, 0, 0, 0.5);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.12) 0px, transparent 50%);
    background-attachment: fixed;
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Navbar */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand .logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.6rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

.nav-item:hover {
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.08);
}

.btn-study-nav {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secret));
    color: #ffffff !important;
    font-weight: 600;
}

.btn-study-nav:hover {
    opacity: 0.95;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.user-pill:hover {
    border-color: var(--accent-primary);
}

/* Glassmorphic Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--border-glow);
}

.card-header {
    margin-bottom: 1.2rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.92rem;
    color: var(--text-muted);
}

/* Page Headers & Grids */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
}

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

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

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger, .btn-icon {
    font-family: var(--font-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-danger {
    background: var(--danger-color);
    color: #ffffff;
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-icon {
    padding: 0.4rem 0.6rem;
    background: transparent;
    border-radius: 8px;
    font-size: 1.1rem;
}

.btn-icon:hover {
    background: var(--bg-secondary);
}

.btn-icon-danger:hover {
    background: var(--danger-bg);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1.05rem;
}

.btn-link {
    background: transparent;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.btn-link:hover {
    text-decoration: underline;
}

/* Form Styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-main);
    font-size: 0.95rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    outline: none;
}

.code-font {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-size: 0.95rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.form-help {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
    display: block;
}

/* Auth Cards */
.auth-card-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
}

.auth-card {
    max-width: 440px;
    width: 100%;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.auth-footer a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

/* Status Badges & Tags */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-secret {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-secret);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-regular {
    background: rgba(59, 130, 246, 0.15);
    color: var(--info-color);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-info {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-size: 0.78rem;
    margin-right: 0.3rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    padding: 1.25rem;
    margin-bottom: 0;
}

.stat-icon {
    font-size: 2.2rem;
}

.stat-data {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 1.5rem;
}

.welcome-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
    border-color: var(--border-glow);
}

.highlight {
    color: var(--accent-primary);
}

.quick-actions {
    display: flex;
    gap: 0.75rem;
}

.collections-list, .cards-simple-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.collection-item, .simple-card-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

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

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

.data-table th, .data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.88rem;
    text-transform: uppercase;
}

.data-table tr:hover {
    background: rgba(99, 102, 241, 0.04);
}

/* Bulk Action Bar */
.bulk-action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-left: 4px solid var(--accent-primary);
    margin-bottom: 1.5rem;
    animation: fadeInDown 0.3s ease;
}

.hidden {
    display: none !important;
}

.bulk-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.inline-form {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Collections Grid */
.collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.collection-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-bottom: 0;
}

.col-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.col-cards-preview {
    font-size: 0.85rem;
}

.col-cards-list {
    list-style: none;
    margin-top: 0.5rem;
    max-height: 120px;
    overflow-y: auto;
}

.col-cards-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.3rem 0;
    border-bottom: 1px dashed var(--border-color);
}

/* Study Session Interface */
.study-session-container {
    max-width: 800px;
    margin: 0 auto;
}

.study-card-wrapper {
    perspective: 1000px;
    margin-top: 1.5rem;
}

.study-card {
    min-height: 380px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-glow);
}

.card-prompt-text {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin: 2rem 0;
    color: var(--text-primary);
}

.input-with-button {
    display: flex;
    gap: 0.5rem;
}

.answer-input {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    padding: 0.85rem 1.1rem;
    text-align: center;
}

.btn-toggle-vis {
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.feedback-box {
    margin-top: 1.5rem;
    animation: fadeInUp 0.25s ease;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
}

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--info-color);
    border: 1px solid var(--info-color);
}

.alert-close {
    background: transparent;
    border: none;
    color: inherit;
    font-size: 1.3rem;
    cursor: pointer;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    max-width: 550px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2.25rem;
    animation: scaleUp 0.25s ease;
}

.modal-lg {
    max-width: 750px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.6rem;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.collections-checkbox-grid, .card-selection-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Settings & 2FA */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-active {
    background: var(--success-bg);
    color: var(--success-color);
}

.status-active .status-dot {
    background: var(--success-color);
}

.status-inactive {
    background: var(--danger-bg);
    color: var(--danger-color);
}

.status-inactive .status-dot {
    background: var(--danger-color);
}

.qr-box {
    text-align: center;
    margin: 1.5rem 0;
    padding: 1rem;
    background: #ffffff;
    border-radius: 12px;
    display: inline-block;
}

.qr-code-img {
    max-width: 180px;
    height: auto;
}

.secret-text {
    margin-top: 0.5rem;
    color: #0f172a;
    word-break: break-all;
}

.code-input {
    letter-spacing: 0.35em;
    font-size: 1.2rem;
    text-align: center;
    font-family: var(--font-mono);
}

/* Tooltips */
.tooltip-trigger {
    cursor: help;
    font-size: 0.85rem;
    margin-left: 0.3rem;
    color: var(--accent-primary);
    position: relative;
}

/* App Footer */
.app-footer {
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    text-align: center;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.vibe-text {
    font-weight: 500;
}

.source-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.source-link:hover {
    text-decoration: underline;
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes scaleUp {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    .dashboard-grid, .settings-grid {
        grid-template-columns: 1fr;
    }
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}