/* ============================================
   QuickTableConvert - Theme Specific Styles
   Header, Footer, Navigation
   ============================================ */

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
    transition: all var(--transition-normal);
}

[data-theme="dark"] .site-header {
    background-color: rgba(15, 23, 42, 0.9);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: var(--max-width-2xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-lg);
    color: white;
    font-weight: var(--font-extrabold);
    font-size: var(--text-lg);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text-main {
    font-size: var(--text-lg);
    font-weight: var(--font-extrabold);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text-sub {
    font-size: var(--text-xs);
    font-weight: var(--font-normal);
    color: var(--text-secondary);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--neutral-100);
}

.nav-link.active {
    color: var(--primary-500);
    background-color: var(--primary-50);
}

[data-theme="dark"] .nav-link.active {
    color: var(--primary-300);
    /* Brighter blue for effortless reading */
    background-color: rgba(14, 165, 233, 0.15);
    /* Slightly more visible background */
    font-weight: 600;
}

[data-theme="dark"] .nav-link:hover {
    color: var(--text-primary);
    background-color: var(--neutral-100);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    background-color: var(--neutral-100);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-button:hover {
    background-color: var(--neutral-200);
    border-color: var(--border-color-hover);
}

.lang-button svg {
    width: 16px;
    height: 16px;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 50;
    max-height: 300px; /* Limit height */
    overflow-y: auto; /* Enable scrolling */
    scrollbar-width: thin; /* Firefox thin scrollbar */
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.lang-option:hover {
    background-color: var(--neutral-100);
}

.lang-option.active {
    background-color: var(--primary-50);
    color: var(--primary-600);
    font-weight: var(--font-semibold);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--neutral-100);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.theme-toggle:hover {
    background-color: var(--neutral-200);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-icon-sun {
    display: none;
}

[data-theme="dark"] .theme-icon-sun {
    display: block;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) 0;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
    color: var(--primary-500);
}

.breadcrumbs span:not(:last-child) {
    color: var(--text-tertiary);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    margin-top: var(--space-24);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) 0 var(--space-8);
}

[data-theme="dark"] .site-footer {
    background-color: var(--bg-primary);
    /* Use darker bg for contrast */
    border-top-color: var(--border-color);
}

.footer-container {
    max-width: var(--max-width-2xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.footer-section h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-link {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-500);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--neutral-100);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary-500);
    color: white;
    transform: translateY(-2px);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

@media (max-width: 767px) {
    .header-container {
        padding: 0 var(--space-4);
        height: 64px;
    }

    .logo-text-sub {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ============================================
   DARK MODE INPUTS & POLISH
   ============================================ */
[data-theme="dark"] .input,
[data-theme="dark"] .form-input,
[data-theme="dark"] .data-input,
[data-theme="dark"] .select,
[data-theme="dark"] .form-select,
[data-theme="dark"] textarea,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="email"] {
    background-color: #1e293b !important;
    /* Slate-800: Lighter than bg */
    border-color: #334155 !important;
    color: #f1f5f9 !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .input:focus,
[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .data-input:focus,
[data-theme="dark"] .select:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] input[type="text"]:focus {
    border-color: var(--primary-500) !important;
    background-color: #1e293b !important;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2) !important;
}

[data-theme="dark"] .btn-secondary {
    background-color: rgba(30, 41, 59, 0.5);
    border-color: #334155;
    color: #e2e8f0;
}

[data-theme="dark"] .btn-secondary:hover {
    background-color: #334155;
    border-color: #94a3b8;
    color: #fff;
}

/* ============================================
   TOOLS PAGE REDESIGN (CHIC CARDS)
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
    margin: var(--space-8) 0;
}

.tool-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-500);
    z-index: 10;
}

.tool-card h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.tool-card:hover h3 {
    color: var(--primary-600);
}

.tool-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Dark Mode for Tool Cards */
[data-theme="dark"] .tool-card {
    background-color: #1e293b;
    /* Slate 800 - Chic Dark */
    border-color: #334155;
    /* Slate 700 */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .tool-card:hover {
    background-color: #334155;
    /* Slate 700 - Lighter on hover */
    border-color: var(--primary-500);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .tool-card:hover h3 {
    color: var(--primary-400);
}

/* ============================================
   FILE DROP ZONE STYLES (PHASE 17)
   ============================================ */
.file-drop-zone {
    border: 2px dashed var(--primary-300);
    padding: 3rem 2rem;
    text-align: center;
    border-radius: var(--radius-lg);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    background: var(--primary-50);
    border-color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.file-drop-zone .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.8;
    transition: transform var(--transition-fast);
}

.file-drop-zone:hover .icon {
    transform: scale(1.1);
}

.file-drop-zone h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.file-drop-zone p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin: 0;
}

/* Dark Mode for Drop Zone */
[data-theme="dark"] .file-drop-zone {
    background-color: #1e293b;
    /* Slate 800 - Visible in dark mode */
    border-color: #475569;
    /* Slate 600 - Visible border */
    box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .file-drop-zone:hover,
[data-theme="dark"] .file-drop-zone.dragover {
    background-color: #334155;
    /* Slate 700 */
    border-color: var(--primary-400);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .file-drop-zone p {
    color: #94a3b8;
    /* Slate 400 */
}

/* ============================================
   CHIC TOOL CONTAINER (PHASE 18)
   ============================================ */
.chic-tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-8);
    background: radial-gradient(circle at top right, var(--primary-50), transparent 70%);
    border-radius: var(--radius-2xl);
    position: relative;
}

[data-theme="dark"] .chic-tool-container {
    background: radial-gradient(circle at top right, rgba(14, 165, 233, 0.05), transparent 70%);
}

.chic-tool-container .input-area {
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}