/* DevToolHub - Global Common Styles
 * Includes: Dark mode, Favorite button, History, Mobile nav, Toast improvements
 */

/* ===== CSS Variables (Light Mode - Default) ===== */
:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --primary-light: #EEF2FF;
    --bg: #F9FAFB;
    --card-bg: #FFF;
    --text: #111827;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --success: #059669;
    --success-bg: #ECFDF5;
    --warning: #D97706;
    --warning-bg: #FFFBEB;
    --error: #DC2626;
    --error-bg: #FEF2F2;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1);
}

/* ===== Dark Mode ===== */
[data-theme="dark"] {
    --primary: #818CF8;
    --primary-hover: #A5B4FC;
    --primary-light: #312E81;
    --bg: #0F172A;
    --card-bg: #1E293B;
    --text: #F1F5F9;
    --text-secondary: #94A3B8;
    --border: #334155;
    --success: #34D399;
    --success-bg: #064E3B;
    --warning: #FBBF24;
    --warning-bg: #78350F;
    --error: #F87171;
    --error-bg: #7F1D1D;
    --shadow: 0 1px 3px rgba(0,0,0,.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.4);
}

[data-theme="dark"] body {
    background: var(--bg);
    color: var(--text);
}

[data-theme="dark"] .header,
[data-theme="dark"] .footer {
    background: var(--card-bg);
    border-color: var(--border);
}

[data-theme="dark"] .tool-card,
[data-theme="dark"] .content-section,
[data-theme="dark"] .v10-tags-section,
[data-theme="dark"] .v10-breadcrumb,
[data-theme="dark"] .related-card,
[data-theme="dark"] .category-card {
    background: var(--card-bg);
    border-color: var(--border);
    box-shadow: var(--shadow);
}

[data-theme="dark"] .editor-panel,
[data-theme="dark"] textarea,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] select {
    background: var(--card-bg);
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] .editor-label {
    background: #263449;
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] .drop-zone {
    background: var(--bg);
    border-color: var(--border);
}

[data-theme="dark"] .drop-zone:hover,
[data-theme="dark"] .drop-zone.dragover {
    background: var(--primary-light);
    border-color: var(--primary);
}

[data-theme="dark"] .result-text,
[data-theme="dark"] .ad-slot {
    background: var(--bg);
    border-color: var(--border);
}

[data-theme="dark"] .btn-secondary {
    background: var(--card-bg);
    color: var(--text);
    border-color: var(--border);
}

[data-theme="dark"] .btn-secondary:hover {
    background: #334155;
}

[data-theme="dark"] .faq-item {
    border-color: var(--border);
}

[data-theme="dark"] .content-section pre {
    background: #0F172A;
    color: #E2E8F0;
}

[data-theme="dark"] .content-section code {
    color: var(--primary);
}

[data-theme="dark"] .tab {
    border-color: var(--border);
}

[data-theme="dark"] .search-box input {
    background: var(--card-bg);
    border-color: var(--border);
    color: var(--text);
}

[data-theme="dark"] .search-suggestions {
    background: var(--card-bg);
    border-color: var(--border);
}

[data-theme="dark"] .search-item:hover {
    background: var(--primary-light);
}

[data-theme="dark"] .v10-tag {
    background: var(--primary-light);
    color: var(--primary);
}

[data-theme="dark"] .v10-tag:hover {
    background: var(--primary);
    color: #fff;
}

[data-theme="dark"] .hot-tag {
    background: var(--card-bg);
    border-color: var(--border);
    color: var(--text-secondary);
}

[data-theme="dark"] .hot-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

[data-theme="dark"] .tools-grid .tool-card,
[data-theme="dark"] .category-grid .category-card {
    background: var(--card-bg);
    border-color: transparent;
}

[data-theme="dark"] .tools-grid .tool-card:hover,
[data-theme="dark"] .category-grid .category-card:hover {
    border-color: var(--primary);
}

[data-theme="dark"] table {
    background: var(--card-bg);
    border-color: var(--border);
}

[data-theme="dark"] table th,
[data-theme="dark"] table td {
    border-color: var(--border);
}

[data-theme="dark"] .toast {
    background: #334155;
    color: var(--text);
}

[data-theme="dark"] .favorite-btn.favorited {
    color: #F472B6;
}

[data-theme="dark"] .similar-tools-section,
[data-theme="dark"] .history-section {
    background: var(--card-bg);
    border-color: var(--border);
}

/* ===== Theme Toggle Button ===== */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    padding: 6px 10px;
    border-radius: 8px;
    transition: all .2s;
    color: var(--text-secondary);
}

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

/* ===== Favorite Button ===== */
.favorite-btn {
    background: none;
    border: 1px solid var(--border);
    cursor: pointer;
    font-size: 16px;
    padding: 6px 12px;
    border-radius: 8px;
    transition: all .2s;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.favorite-btn.favorited {
    color: #EC4899;
    border-color: #EC4899;
    background: #FDF2F8;
}

[data-theme="dark"] .favorite-btn.favorited {
    background: #831843;
}

.favorite-btn .fav-icon {
    font-size: 14px;
    transition: transform .2s;
}

.favorite-btn.favorited .fav-icon {
    animation: heartBeat .3s ease;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* ===== Tool Header with Favorite ===== */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.tool-header .hero {
    text-align: left;
    margin-bottom: 0;
    flex: 1;
}

/* ===== Sidebar / Related Tools Enhancement ===== */
.similar-tools-section {
    margin-top: 32px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.similar-tools-section h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text);
}

.similar-tools-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
}

.similar-tool-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
    transition: all .2s;
    background: var(--bg);
    border: 1px solid transparent;
}

.similar-tool-item:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.similar-tool-item .sti-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.similar-tool-item .sti-info {
    overflow: hidden;
}

.similar-tool-item .sti-title {
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.similar-tool-item .sti-desc {
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== History Section ===== */
.history-section {
    margin-top: 24px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.history-section h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
}

.history-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.history-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 13px;
    transition: all .2s;
}

.history-item:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.history-item .hi-icon {
    font-size: 14px;
}

/* ===== Mobile Navigation (Hamburger) ===== */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px 8px;
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,.5);
    z-index: 200;
}

.mobile-nav-overlay.show {
    display: block;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background: var(--card-bg);
    z-index: 201;
    transition: right .3s ease;
    overflow-y: auto;
    padding: 20px;
}

.mobile-nav.show {
    right: 0;
}

.mobile-nav-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.mobile-nav-links {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav-links a {
    display: block;
    padding: 12px 16px;
    color: var(--text);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    transition: all .2s;
}

.mobile-nav-links a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.mobile-nav-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .5px;
    padding: 16px 16px 8px;
}

.mobile-nav-actions {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.mobile-nav-actions .nav-action-btn {
    flex: 1;
    min-width: 100px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all .2s;
}

.mobile-nav-actions .nav-action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ===== Enhanced Toast ===== */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1F2937;
    color: #fff;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    z-index: 9999;
    opacity: 0;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    pointer-events: none;
    box-shadow: 0 10px 25px rgba(0,0,0,.2);
    font-weight: 500;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.toast-success {
    background: #059669;
}

.toast.toast-error {
    background: #DC2626;
}

.toast.toast-warning {
    background: #D97706;
}

/* ===== Copy Button Consistent Style ===== */
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
}

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

.copy-btn:active {
    transform: scale(.98);
}

/* ===== Favorites Page & History Page ===== */
.favorites-container,
.history-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 28px 20px 40px;
}

.favorites-header,
.history-header {
    text-align: center;
    margin-bottom: 32px;
}

.favorites-header h1,
.history-header h1 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
}

.favorites-header p,
.history-header p {
    color: var(--text-secondary);
    font-size: 15px;
}

.favorites-empty,
.history-empty {
    text-align: center;
    padding: 60px 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.favorites-empty .emoji,
.history-empty .emoji {
    font-size: 64px;
    margin-bottom: 16px;
}

.favorites-empty h2,
.history-empty h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.favorites-empty p,
.history-empty p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.favorites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.favorite-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    text-decoration: none;
    color: var(--text);
    transition: all .2s;
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    position: relative;
}

.favorite-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.favorite-card .fc-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.favorite-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.favorite-card p {
    font-size: 13px;
    color: var(--text-secondary);
    flex: 1;
}

.favorite-card .fc-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.favorite-card .fc-cat {
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 10px;
    border-radius: 12px;
}

.favorite-card .fc-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all .2s;
}

.favorite-card .fc-remove:hover {
    background: var(--error-bg);
    color: var(--error);
}

/* ===== Related Categories (for category pages) ===== */
.related-categories {
    margin-top: 32px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.related-categories h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.related-cat-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.related-cat-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text);
    font-size: 14px;
    transition: all .2s;
}

.related-cat-link:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.related-cat-link .rc-icon {
    font-size: 16px;
}

/* ===== Related Tags (for tag pages) ===== */
.related-tags-section {
    margin-top: 24px;
}

.related-tags-section h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
}

/* ===== Install PWA Banner ===== */
.pwa-install-banner {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 400px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 16px 20px;
    z-index: 9998;
    border: 1px solid var(--border);
    align-items: center;
    gap: 14px;
}

.pwa-install-banner.show {
    display: flex;
}

.pwa-install-banner .pwa-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.pwa-install-banner .pwa-info {
    flex: 1;
}

.pwa-install-banner .pwa-info h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.pwa-install-banner .pwa-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

.pwa-install-banner .pwa-actions {
    display: flex;
    gap: 8px;
}

.pwa-install-banner .pwa-btn {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
}

.pwa-install-banner .pwa-btn-install {
    background: var(--primary);
    color: #fff;
}

.pwa-install-banner .pwa-btn-install:hover {
    background: var(--primary-hover);
}

.pwa-install-banner .pwa-btn-dismiss {
    background: transparent;
    color: var(--text-secondary);
}

.pwa-install-banner .pwa-btn-dismiss:hover {
    color: var(--text);
}

/* ===== Responsive ===== */
@media(max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        display: none !important;
    }

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

    .tool-header .hero {
        width: 100%;
    }

    .favorites-header h1,
    .history-header h1 {
        font-size: 22px;
    }

    .similar-tools-list {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    .pwa-install-banner {
        left: 12px;
        right: 12px;
    }
}

@media(max-width: 480px) {
    .favorites-grid {
        grid-template-columns: 1fr;
    }

    .similar-tools-list {
        grid-template-columns: 1fr 1fr;
    }
}