/**
 * AppDoesIt - Main Stylesheet
 *
 * Structure:
 * 1. CSS Custom Properties (Variables)
 * 2. Reset & Base
 * 3. Typography
 * 4. Layout Components
 * 5. Navigation
 * 6. Hero Section
 * 7. App Cards
 * 8. Features Section
 * 9. Page Sections
 * 10. Footer
 * 11. Utilities
 * 12. Responsive Design
 * 13. Print Styles
 * 14. Reduced Motion
 */

/* ========================================
   1. CSS Custom Properties
   ======================================== */

:root {
    /* Colors */
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-primary-light: #6366f1;

    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-card: #ffffff;

    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #64748b; /* Darker for better contrast - 4.5:1 on white */

    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;

    --color-success: #10b981;
    --color-success-text: #047857; /* Darker green for text - 5.85:1 contrast on white */
    --color-error: #ef4444;
    --color-error-text: #dc2626; /* Darker red for text - 4.63:1 contrast on white */
    --color-warning: #f59e0b;
    --color-warning-text: #b45309; /* Darker amber for text - 4.63:1 contrast on white */

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* 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;
    --space-20: 5rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 720px;
    --header-height: 64px;
    --favorites-bar-height: 44px;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Focus */
    --focus-ring: 0 0 0 3px rgba(79, 70, 229, 0.4);
}

/* Dark mode colors */
:root[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-bg-card: #1e293b;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-light: #94a3b8; /* Lighter for good contrast on dark bg */
    --color-border: #334155;
    --color-border-dark: #475569;
    --color-success-text: #34d399; /* Lighter green for text on dark - 4.67:1 contrast */
    --color-error-text: #f87171; /* Lighter red for text on dark - 4.63:1 contrast */
    --color-warning-text: #fbbf24; /* Lighter amber for text on dark - 4.52:1 contrast */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.2);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

/* System preference fallback (when no explicit theme is set) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --color-bg: #0f172a;
        --color-bg-alt: #1e293b;
        --color-bg-card: #1e293b;
        --color-text: #f1f5f9;
        --color-text-muted: #94a3b8;
        --color-text-light: #94a3b8; /* Lighter for good contrast on dark bg */
        --color-border: #334155;
        --color-border-dark: #475569;
        --color-success-text: #34d399;
        --color-error-text: #f87171;
        --color-warning-text: #fbbf24;
        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.2);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    }
}

/* ========================================
   2. Reset & Base
   ======================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

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

a:hover {
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

ul,
ol {
    list-style: none;
}

/* ========================================
   3. Typography
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-6);
}

h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-4);
}

h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

p {
    margin-bottom: var(--space-4);
}

.lead {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   4. Layout Components
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.main-content {
    flex: 1;
    padding-top: var(--header-height);
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 1000;
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
    outline: none;
    box-shadow: var(--focus-ring);
}

/* ========================================
   5. Navigation
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    font-size: var(--font-size-xl);
}

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.nav-toggle:hover {
    background: var(--color-bg-alt);
}

.nav-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.nav-toggle-icon {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    left: 0;
}

.nav-toggle-icon::before {
    top: -6px;
}

.nav-toggle-icon::after {
    top: 6px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-menu a {
    display: block;
    padding: var(--space-2) var(--space-4);
    color: var(--color-text-muted);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-menu a:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.nav-menu a[aria-current="page"] {
    color: var(--color-primary);
    background: rgba(79, 70, 229, 0.1);
}

.nav-menu a:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Navigation Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-expanded="true"] {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.nav-dropdown-trigger:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.nav-dropdown-arrow {
    transition: transform var(--transition-fast);
}

.nav-dropdown-trigger[aria-expanded="true"] .nav-dropdown-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    min-width: 280px;
    max-height: calc(100vh - var(--header-height) - var(--space-8));
    overflow-y: auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-3);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition-fast),
                transform var(--transition-fast),
                visibility var(--transition-fast);
}

.nav-dropdown-menu:not([hidden]) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-favorites {
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.nav-dropdown-group-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-dropdown-group-icon {
    font-size: 1rem;
}

.nav-dropdown-group {
    padding: var(--space-2) 0;
}

.nav-dropdown-group:not(:last-child) {
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-2);
}

.nav-dropdown-category {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.nav-dropdown-category:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
}

.nav-dropdown-category-icon {
    font-size: 1rem;
}

.nav-dropdown-apps {
    list-style: none;
    padding: 0;
    margin: 0;
    padding-left: var(--space-6);
}

.nav-dropdown-apps li {
    margin: 0;
}

.nav-dropdown-apps a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: 400;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-apps a:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

/* Favorites Button on App Cards */
.app-card {
    position: relative;
}

.app-card-favorite {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
    opacity: 0;
}

.app-card:hover .app-card-favorite,
.app-card:focus-within .app-card-favorite,
.app-card-favorite:focus,
.app-card-favorite[aria-pressed="true"] {
    opacity: 1;
}

.app-card-favorite:hover {
    border-color: var(--color-error);
    color: var(--color-error);
    transform: scale(1.1);
}

.app-card-favorite:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    opacity: 1;
}

.app-card-favorite svg {
    width: 18px;
    height: 18px;
}

.app-card-favorite .favorite-icon-filled {
    display: none;
    color: var(--color-error);
}

.app-card-favorite[aria-pressed="true"] .favorite-icon-outline {
    display: none;
}

.app-card-favorite[aria-pressed="true"] .favorite-icon-filled {
    display: block;
}

.app-card-favorite[aria-pressed="true"] {
    color: var(--color-error);
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

/* Category Page Styles */
.category-hero {
    text-align: center;
    padding: var(--space-16) var(--space-4) var(--space-12);
    background: var(--color-bg-alt);
}

.category-hero-icon {
    display: block;
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.category-hero h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.category-hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.other-categories-section {
    padding: var(--space-12) var(--space-4);
    background: var(--color-bg-alt);
}

.other-categories-section h2 {
    text-align: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-8);
}

.categories-grid {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-6);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    min-width: 160px;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.category-card-icon {
    font-size: 2.5rem;
}

.category-card-name {
    font-weight: 600;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-color: var(--color-border-dark);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.theme-toggle-label {
    display: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

/* Show sun icon in dark mode (click to go light) */
:root[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

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

/* Show moon icon in light mode (click to go dark) */
:root[data-theme="light"] .theme-toggle .icon-moon {
    display: block;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
    display: none;
}

/* When no theme is set, show based on system preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .theme-toggle .icon-sun {
        display: block;
    }
    :root:not([data-theme]) .theme-toggle .icon-moon {
        display: none;
    }
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme]) .theme-toggle .icon-moon {
        display: block;
    }
    :root:not([data-theme]) .theme-toggle .icon-sun {
        display: none;
    }
}

/* Language Selector */
.language-selector {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: var(--color-bg-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-8) var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-2) center;
    min-width: 120px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.language-selector:hover {
    border-color: var(--color-border-dark);
}

.language-selector:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

.language-selector option {
    background-color: var(--color-bg);
    color: var(--color-text);
    padding: var(--space-2);
}

/* ========================================
   6. Hero Section
   ======================================== */

.hero {
    padding: var(--space-16) var(--space-4);
    text-align: center;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-content {
    max-width: 640px;
    margin: 0 auto;
}

.hero h1 {
    font-size: var(--font-size-4xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ========================================
   7. App Cards
   ======================================== */

.apps-section {
    padding: var(--space-16) var(--space-4);
}

.apps-section h2 {
    text-align: center;
    margin-bottom: var(--space-10);
}

.category-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.category-section-header h2 {
    text-align: left;
    margin-bottom: 0;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-base);
}

.view-all-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
    max-width: var(--container-max);
    margin: 0 auto;
}

.app-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.app-card-link {
    display: block;
    padding: var(--space-6);
    color: inherit;
}

.app-card-link:focus-visible {
    outline: none;
    box-shadow: inset var(--focus-ring);
}

.app-card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.app-card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
}

.app-card-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
}

.app-card-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.no-apps-message {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-8);
}

/* ========================================
   8. Features Section
   ======================================== */

.features-section {
    padding: var(--space-16) var(--space-4);
    background: var(--color-bg-alt);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    max-width: var(--container-max);
    margin: 0 auto;
}

.feature {
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--space-4);
}

.feature h3 {
    margin-bottom: var(--space-2);
}

.feature p {
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ========================================
   9. Page Sections
   ======================================== */

.page-section {
    padding: var(--space-12) var(--space-4);
}

.page-section h1 {
    margin-bottom: var(--space-8);
}

.page-section h2 {
    margin-top: var(--space-8);
}

/* Contact Form Styles */
.contact-form {
    margin-top: var(--space-8);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--color-text);
}

.form-label .required {
    color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--space-3) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: var(--space-10);
}

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

.form-input-short {
    max-width: 150px;
}

.form-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--space-4);
    padding: var(--space-3);
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-error);
}

/* Suggest App Page Hero */
.suggest-hero {
    text-align: center;
    margin-bottom: var(--space-8);
}

.suggest-hero-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-4);
}

.suggest-intro {
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-8);
}

/* Suggest App CTA Section */
.suggest-cta-section {
    text-align: center;
    padding: var(--space-12) var(--space-4);
    background: var(--color-bg-alt);
}

.suggest-cta-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-4);
}

.suggest-cta-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.suggest-cta-text {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Error Page */
.error-page {
    padding: var(--space-20) var(--space-4);
    text-align: center;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-content {
    max-width: 400px;
}

.error-code {
    font-size: 6rem;
    font-weight: 700;
    color: var(--color-border-dark);
    line-height: 1;
    display: block;
    margin-bottom: var(--space-4);
}

.error-page h1 {
    margin-bottom: var(--space-4);
}

.error-page p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

/* Use Cases Section */
.use-cases {
    max-width: 900px;
    margin: var(--space-12) auto 0;
    padding: var(--space-8);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
}

.use-cases h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.use-cases-intro {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

.use-cases-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--space-4);
}

.use-cases-list li {
    background: var(--color-bg-card);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.use-cases-list li strong {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.use-cases-list li p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-normal);
    margin: 0;
}

@media (min-width: 768px) {
    .use-cases-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .use-cases-list {
        grid-template-columns: repeat(3, 1fr);
    }

    .use-cases-list li:nth-child(4),
    .use-cases-list li:nth-child(5) {
        grid-column: span 1;
    }
}

/* FAQ Section */
.faq-section {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.faq-section h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-4);
    text-align: center;
}

.faq-list {
    display: grid;
    gap: var(--space-4);
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-card);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.faq-item dt {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.faq-item dd {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* ========================================
   10. Footer
   ======================================== */

.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-8) var(--space-4);
    margin-top: auto;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 600;
}

.footer-nav {
    display: flex;
    gap: var(--space-6);
}

.footer-nav a {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-nav a:hover {
    color: var(--color-primary);
}

.footer-copyright {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

/* ========================================
   11. Utilities
   ======================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-weight: 500;
    font-size: var(--font-size-base);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn:active {
    transform: scale(0.98);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
}

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

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

/* Visually Hidden (for screen readers) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   12. Responsive Design
   ======================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 1.75rem;
        --font-size-4xl: 2rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: var(--space-4);
        display: none;
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-menu a {
        width: 100%;
        padding: var(--space-3) var(--space-4);
    }

    .nav-menu .language-selector {
        width: 100%;
        margin-top: var(--space-2);
    }

    .nav-menu .theme-toggle {
        width: 100%;
        margin-top: var(--space-2);
        justify-content: flex-start;
        padding: var(--space-3) var(--space-4);
        gap: var(--space-2);
    }

    .nav-menu .theme-toggle-label {
        display: inline;
    }

    /* Mobile dropdown styles */
    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown-trigger {
        width: 100%;
        justify-content: space-between;
        padding: var(--space-3) var(--space-4);
    }

    .nav-dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        min-width: unset;
        padding: 0;
        padding-left: var(--space-4);
        margin-top: var(--space-2);
        opacity: 1;
        visibility: visible;
        transform: none;
        max-height: none;
    }

    .nav-dropdown-menu[hidden] {
        display: none;
    }

    .nav-dropdown-group {
        border-bottom: none;
        padding: 0;
    }

    .nav-dropdown-apps {
        padding-left: var(--space-4);
    }

    .nav-dropdown-favorites {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }

    /* Show favorite buttons always on mobile */
    .app-card-favorite {
        opacity: 1;
    }

    .hero {
        padding: var(--space-10) var(--space-4);
    }

    .apps-section,
    .features-section {
        padding: var(--space-10) var(--space-4);
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --font-size-3xl: 1.5rem;
        --font-size-4xl: 1.75rem;
    }

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

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ========================================
   13. Print Styles
   ======================================== */

@media print {
    .site-header,
    .site-footer,
    .skip-link {
        display: none;
    }

    .main-content {
        padding-top: 0;
    }

    body {
        background: white;
        color: black;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    .app-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* ========================================
   14. Reduced Motion
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========================================
   15. Update Notification
   ======================================== */

.update-notification {
    position: fixed;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    max-width: 90vw;
    animation: slideUp 0.3s ease-out;
}

.update-notification-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
}

.update-notification-text {
    flex: 1;
}

.update-notification-btn {
    padding: var(--space-2) var(--space-3);
    background: white;
    color: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.update-notification-btn:hover {
    background: var(--color-bg-alt);
}

.update-notification-dismiss {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: transparent;
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.update-notification-dismiss:hover {
    opacity: 1;
}

@keyframes slideUp {
    from {
        transform: translateX(-50%) translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .update-notification {
        left: var(--space-4);
        right: var(--space-4);
        transform: none;
        max-width: none;
    }

    .update-notification-content {
        flex-wrap: wrap;
    }

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

/* ========================================
   Search Component
   ======================================== */

.search-container {
    max-width: 500px;
    margin: var(--space-6) auto 0;
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-left: var(--space-10);
    padding-right: var(--space-10);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg-card);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-clear {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), background var(--transition-fast);
}

.search-input:not(:placeholder-shown) + .search-icon + .search-clear,
.search-clear:focus {
    opacity: 1;
}

.search-clear:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.search-no-results {
    text-align: center;
    padding: var(--space-12) var(--space-4);
    color: var(--color-text-muted);
}

.search-no-results-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

/* Nav dropdown search */
.nav-search-container {
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-2);
}

.nav-search-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
}

.nav-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

.nav-search-input::placeholder {
    color: var(--color-text-muted);
}

/* View all link in nav dropdown favorites */
.nav-dropdown-view-all {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.nav-dropdown-view-all:hover {
    background: var(--color-bg-alt);
}

/* Favorites Dropdown Menu */
.nav-favorites-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-favorites-icon {
    color: var(--color-error);
    font-size: 0.9em;
}

.nav-favorites-dropdown {
    min-width: 280px;
}

.nav-favorites-empty {
    text-align: center;
    padding: var(--space-6) var(--space-4);
    color: var(--color-text-muted);
}

.nav-favorites-empty-icon {
    font-size: 2rem;
    margin-bottom: var(--space-2);
    opacity: 0.5;
}

.nav-favorites-empty p {
    margin-bottom: var(--space-3);
    font-size: var(--font-size-sm);
}

.nav-favorites-browse-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    text-decoration: none;
}

.nav-favorites-browse-link:hover {
    text-decoration: underline;
}

#nav-favorites-list {
    padding-left: 0;
}

#nav-favorites-list a {
    padding-left: var(--space-3);
}

/* Quick Access Favorites Bar */
.quick-favorites-bar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 99;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2) 0;
    overflow: hidden;
}

.quick-favorites-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.quick-favorites-label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.quick-favorites-icon {
    color: var(--color-error);
}

.quick-favorites-list {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    overflow-x: auto;
    padding: var(--space-1) 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.quick-favorites-list::-webkit-scrollbar {
    display: none;
}

.quick-favorite-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.quick-favorite-item:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-bg);
}

.quick-favorite-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: var(--space-1);
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    transition: all var(--transition-fast);
}

.quick-favorite-remove:hover {
    background: var(--color-error);
    color: white;
}

/* Adjust main content padding when favorites bar is visible */
body.has-favorites-bar .main-content {
    padding-top: calc(var(--header-height) + var(--favorites-bar-height));
}

/* ========================================
   Favorites Page
   ======================================== */

.favorites-hero {
    text-align: center;
    padding: var(--space-12) var(--space-4);
    background: var(--color-bg-alt);
}

.favorites-hero-icon {
    font-size: 4rem;
    color: var(--color-error);
    display: block;
    margin-bottom: var(--space-4);
}

.favorites-hero h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
}

.favorites-section {
    padding: var(--space-12) var(--space-4);
    min-height: 300px;
}

.favorites-empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-4);
}

.favorites-empty-state .empty-state-icon {
    font-size: 5rem;
    color: var(--color-border);
    margin-bottom: var(--space-4);
}

.favorites-empty-state h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: var(--space-3);
}

.favorites-empty-state p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.favorites-suggestions {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.favorites-suggestions h3 {
    text-align: center;
    margin-bottom: var(--space-8);
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

/* Button styles for favorites page */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
}

.btn-primary:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* ========================================
   Cookie Consent Banner
   ======================================== */

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    padding: var(--space-4);
    transform: translateY(0);
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.cookie-consent[hidden] {
    display: block !important;
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.cookie-consent.cookie-consent--visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.cookie-consent-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.cookie-consent-content p {
    margin: 0;
    flex: 1;
    min-width: 200px;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

.cookie-consent-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

.cookie-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.cookie-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.cookie-link:focus {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

.cookie-accept {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--space-2) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.cookie-accept:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.cookie-accept:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

.cookie-accept:active {
    transform: translateY(0);
}

/* Dark mode support */
[data-theme="dark"] .cookie-consent {
    background: var(--color-bg-card);
    border-top-color: var(--color-border);
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    .cookie-consent {
        padding: var(--space-3);
    }

    .cookie-consent-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-consent-content p {
        min-width: auto;
    }

    .cookie-consent-actions {
        width: 100%;
        justify-content: center;
    }
}

/* Owner info styling for privacy page */
.owner-info {
    font-style: normal;
    background: var(--color-bg-alt);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    margin: var(--space-4) 0;
}

.owner-info a {
    color: var(--color-primary);
    text-decoration: none;
}

.owner-info a:hover {
    text-decoration: underline;
}