/* ============================================
   PODCASTS NOVA - Main Stylesheet
   Font: IBM Plex Mono
   Features: Dark mode, Modern SaaS design
   ============================================ */

/* === CSS Variables === */
:root {
    /* Colors - Light Mode */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --border-light: #e9ecef;

    /* Accent Colors */
    --accent: #0d6efd;
    --accent-hover: #0b5ed7;
    --accent-light: #e7f1ff;
    --success: #198754;
    --success-light: #d1e7dd;
    --warning: #ffc107;
    --warning-light: #fff3cd;
    --error: #dc3545;
    --error-light: #f8d7da;
    --info: #0dcaf0;
    --info-light: #cff4fc;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

    /* Spacing */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition: 0.2s ease;
}

/* === Dark Mode === */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --border-color: #30363d;
    --border-light: #21262d;

    --accent: #58a6ff;
    --accent-hover: #79b8ff;
    --accent-light: #1f3a5f;
    --success: #3fb950;
    --success-light: #1a4023;
    --warning: #d29922;
    --warning-light: #3d2e00;
    --error: #f85149;
    --error-light: #4a1c1c;
    --info: #39c5cf;
    --info-light: #1a3a3d;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scrollbar-gutter: stable; /* Reserve space for scrollbar to prevent layout shift */
}

body {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition), color var(--transition);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

/* === Container === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* === Navbar === */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 600;
}

.navbar-logo {
    display: block;
    height: 32px;
    width: auto;
    vertical-align: middle;
}

.navbar-title {
    font-size: 1rem;
}

.navbar-menu {
    display: flex;
    gap: 0.5rem;
}

.navbar-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    transition: all var(--transition);
}

.navbar-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.navbar-link.active {
    background: var(--accent-light);
    color: var(--accent);
}

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

.navbar-user {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

/* === Theme Toggle === */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--border-color);
}

[data-theme="light"] .theme-icon-dark,
[data-theme="dark"] .theme-icon-light {
    display: none;
}

/* Logo visibility based on theme */
[data-theme="light"] .logo-dark,
[data-theme="dark"] .logo-light {
    display: none;
}

.theme-toggle-float {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
}

/* === Main Content === */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* === Page Header === */
.page-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.page-header-content {
    flex: 1;
    min-width: 200px;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* === Cards === */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.card-form {
    max-width: 600px;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: white;
}

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

.btn-outline:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
    background: #bb2d3b;
    border-color: #bb2d3b;
    color: white;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
}

.btn-block {
    width: 100%;
}

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

/* === Forms === */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input-sm {
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    width: auto;
}

.form-help {
    display: block;
    margin-top: 0.375rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.form-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

.form-check {
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-input {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.checkbox-text {
    font-size: 0.875rem;
}

/* === Upload Zone === */
.upload-card {
    text-align: center;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

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

.upload-zone.has-file {
    border-color: var(--success);
    background: var(--success-light);
}

.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-main {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.upload-sub {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.upload-selected {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
}

.selected-icon {
    color: var(--success);
    font-weight: bold;
}

.selected-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
}

.upload-progress {
    margin: 1.5rem 0;
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* === Processing Indicator === */
.processing-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1.5rem;
    margin: 1.5rem 0;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.processing-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.processing-step {
    font-weight: 500;
    color: var(--text-primary);
}

.processing-detail {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

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

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

.table th,
.table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

.file-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-icon {
    font-size: 1.25rem;
}

.file-original {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 500;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.badge-warning {
    background: var(--warning-light);
    color: #997404;
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-info {
    background: var(--info-light);
    color: #055160;
}

.badge-primary {
    background: var(--accent-light);
    color: var(--accent);
}

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

/* === Alerts === */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

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

.alert-warning {
    background: var(--warning-light);
    color: #997404;
    border: 1px solid var(--warning);
}

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

.alert-info {
    background: var(--info-light);
    color: #055160;
    border: 1px solid var(--info);
}

.alert a {
    font-weight: 600;
    margin-left: 0.5rem;
}

/* === Toasts === */
.toast-container {
    position: fixed;
    top: 5rem;
    right: 1.5rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--text-secondary);
    animation: slideIn 0.3s ease;
    min-width: 300px;
    max-width: 400px;
}

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

.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--error); }
.toast-warning { border-left-color: var(--warning); }
.toast-info { border-left-color: var(--info); }

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    font-weight: bold;
}

.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--error); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--info); }

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0;
}

/* === Sections === */
.section {
    margin-top: 2rem;
}

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

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.section-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

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

/* === Stats Grid === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-success .stat-icon { background: var(--success-light); }
.stat-error .stat-icon { background: var(--error-light); }

/* === Admin Nav === */
.admin-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-nav-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    color: var(--text-primary);
}

.admin-nav-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.admin-nav-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius);
}

.admin-nav-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.admin-nav-content p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* === Jingles Grid === */
.jingles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.jingle-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.jingle-active {
    border-color: var(--success);
    background: var(--success-light);
}

.jingle-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.jingle-icon {
    font-size: 1.5rem;
}

.jingle-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.jingle-details {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.jingle-details p {
    margin-bottom: 0.25rem;
}

.jingle-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.overlap-form {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

/* === Pagination === */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.pagination-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    font-size: 0.8125rem;
}

.pagination-link:hover {
    background: var(--bg-tertiary);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

/* === Login Page === */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    height: 64px;
    width: auto;
    margin-bottom: 1rem;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* === Footer === */
.footer {
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* === Utilities === */
.inline {
    display: inline;
}

.hidden {
    display: none !important;
}

/* === Responsive === */
@media (max-width: 768px) {
    .navbar-container {
        flex-wrap: wrap;
    }

    .navbar-menu {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 0.75rem;
        padding-top: 0.75rem;
        border-top: 1px solid var(--border-color);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .admin-nav {
        grid-template-columns: 1fr;
    }

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

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .card {
        padding: 1rem;
    }

    .upload-zone {
        padding: 2rem 1rem;
    }

    .table th,
    .table td {
        padding: 0.625rem 0.5rem;
        font-size: 0.75rem;
    }
}