/*
 * Subtitle It / SpeakySee Website Styles
 * Color palette from app logos
 * Accessibility-focused design with WCAG 2.1 AA compliance
 */

/* ========================================
   CSS Custom Properties for Dual Branding
   ======================================== */
:root {
    /* Core Brand Colors */
    --color-primary: #E67451;        /* Coral/Orange from logo */
    --color-secondary: #2F4858;      /* Navy Blue from logo */
    --color-accent: #3D5A80;         /* Dark Blue */
    --color-bg-light: #F5EFE6;       /* Cream/Beige */
    --color-bg-dark: #3D5A80;        /* Dark blue background */
    --color-text-dark: #2F4858;      /* Main text on light bg */
    --color-text-light: #F5EFE6;     /* Text on dark bg */
    --color-white: #FFFFFF;

    /* Semantic Colors */
    --color-link: #E67451;
    --color-link-hover: #D4624A;
    --color-border: #D4D4D4;
    --color-shadow: rgba(47, 72, 88, 0.1);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-display: 'Georgia', 'Times New Roman', serif;

    /* Spacing Scale */
    --space-xs: 0.5rem;    /* 8px */
    --space-sm: 1rem;      /* 16px */
    --space-md: 1.5rem;    /* 24px */
    --space-lg: 2rem;      /* 32px */
    --space-xl: 3rem;      /* 48px */
    --space-2xl: 4rem;     /* 64px */

    /* Layout */
    --container-width: 1200px;
    --content-width: 800px;
    --border-radius: 8px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Accessibility
   ======================================== */

/* Skip to main content link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-sm);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced motion support */
@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;
    }
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--space-md);
    max-width: 70ch;
}

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

a:hover,
a:focus {
    color: var(--color-link-hover);
    text-decoration: underline;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.content-wrapper {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
header {
    background-color: var(--color-white);
    box-shadow: 0 2px 8px var(--color-shadow);
    position: sticky;
    top: 0;
    z-index: 50;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

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

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.brand-text h1 {
    font-size: 1.5rem;
    margin-bottom: 0;
    color: var(--color-secondary);
    font-family: var(--font-display);
}

.brand-text .tagline {
    font-size: 0.875rem;
    color: var(--color-accent);
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--color-text-dark);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus {
    background-color: var(--color-bg-light);
    color: var(--color-primary);
    text-decoration: none;
}

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

/* Mobile Navigation */
@media (max-width: 768px) {
    nav .container {
        flex-direction: column;
        gap: var(--space-md);
    }

    .nav-links {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
        width: 100%;
    }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    color: var(--color-text-light);
    padding: var(--space-2xl) var(--space-md);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    line-height: 1.2;
    font-size: clamp(2rem, 5vw, 3.5rem);
}

.hero .subtitle {
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    margin-bottom: var(--space-xl);
    color: var(--color-bg-light);
    opacity: 0.95;
    max-width: 60ch;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 44px;
    justify-content: center;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-link-hover);
    border-color: var(--color-link-hover);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(230, 116, 81, 0.3);
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-light);
    border-color: var(--color-text-light);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-text-light);
    color: var(--color-secondary);
    text-decoration: none;
    transform: translateY(-2px);
}

/* ========================================
   Feature Grid
   ======================================== */
.features {
    padding: var(--space-2xl) 0;
    background-color: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-secondary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.feature-card {
    background-color: var(--color-bg-light);
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--color-secondary);
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--color-text-dark);
    margin-bottom: 0;
}

/* ========================================
   Use Cases Section
   ======================================== */
.use-cases {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-light);
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.use-case {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.use-case h3 {
    font-size: 1.25rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.use-case p {
    font-size: 0.95rem;
    color: var(--color-text-dark);
    margin-bottom: 0;
}

/* ========================================
   Footer
   ======================================== */
footer {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--color-primary);
}

footer p {
    margin: 0;
    color: var(--color-bg-light);
    font-size: 0.875rem;
    text-align: center;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    color: var(--color-secondary);
    font-family: var(--font-display);
    margin-bottom: var(--space-sm);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-dark);
    max-width: 60ch;
    margin: 0 auto;
}

/* ========================================
   Content Pages (Help, Privacy, Support)
   ======================================== */
.page-header {
    background-color: var(--color-bg-light);
    padding: var(--space-xl) 0;
    text-align: center;
    border-bottom: 3px solid var(--color-primary);
}

.page-header h1 {
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--color-text-dark);
    max-width: 60ch;
    margin: 0 auto;
}

.page-content {
    padding: var(--space-2xl) 0;
}

.page-content section {
    margin-bottom: var(--space-2xl);
}

.page-content h2 {
    margin-top: var(--space-xl);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary);
}

.page-content h3 {
    margin-top: var(--space-lg);
    color: var(--color-accent);
}

.page-content ul,
.page-content ol {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.page-content li {
    margin-bottom: var(--space-xs);
}

.page-content code {
    background-color: var(--color-bg-light);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

/* Info boxes for important notes */
.info-box {
    background-color: var(--color-bg-light);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-md);
    margin: var(--space-md) 0;
    border-radius: var(--border-radius);
}

.info-box h4 {
    margin-bottom: var(--space-sm);
    color: var(--color-secondary);
    font-size: 1rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
}

thead {
    background: var(--color-secondary);
    color: var(--color-text-light);
}

th, td {
    padding: var(--space-sm);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-weight: 600;
}

tbody tr:hover {
    background: var(--color-bg-light);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* ========================================
   Documentation Layout (Help Page)
   ======================================== */
:root {
    --sidebar-width: 280px;
}

.doc-layout {
    display: flex;
    min-height: 100vh;
}

.doc-sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-light);
    padding: var(--space-md);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    border-right: 1px solid rgba(0,0,0,0.1);
}

.doc-sidebar h2 {
    color: var(--color-secondary);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.search-box {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-accent);
    border-radius: var(--border-radius);
    font-size: 1rem;
    margin-bottom: var(--space-md);
    transition: border-color var(--transition-fast);
    font-family: var(--font-primary);
}

.search-box:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(230, 116, 81, 0.1);
}

.nav-section {
    margin-bottom: var(--space-md);
}

.nav-section-title {
    font-weight: 600;
    color: var(--color-secondary);
    padding: var(--space-xs) 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.nav-section-title:hover {
    color: var(--color-primary);
}

.nav-section-title .chevron {
    transition: transform var(--transition-fast);
}

.nav-section.collapsed .chevron {
    transform: rotate(-90deg);
}

.nav-items {
    margin-left: var(--space-sm);
    margin-top: var(--space-xs);
}

.nav-section.collapsed .nav-items {
    display: none;
}

.nav-item {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    color: var(--color-text-dark);
    text-decoration: none;
    border-radius: 4px;
    margin-bottom: 0.25rem;
    transition: all var(--transition-fast);
}

.nav-item:hover,
.nav-item:focus {
    background: var(--color-white);
    color: var(--color-primary);
}

.nav-item.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.doc-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: var(--space-lg) var(--space-xl);
    max-width: 900px;
}

.breadcrumb {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-accent);
}

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

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

.doc-article h1 {
    color: var(--color-secondary);
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.doc-meta {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-bg-light);
    font-size: 0.875rem;
    color: var(--color-accent);
}

.doc-article h2 {
    color: var(--color-secondary);
    font-size: 1.8rem;
    margin: var(--space-lg) 0 var(--space-md);
}

.doc-article h3 {
    color: var(--color-accent);
    font-size: 1.4rem;
    margin: var(--space-md) 0 var(--space-sm);
}

.toc {
    background: var(--color-bg-light);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-lg);
}

.toc h3 {
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
}

.toc ul {
    list-style: none;
    margin: 0;
}

.toc li {
    margin-bottom: var(--space-xs);
}

.toc a {
    color: var(--color-text-dark);
    text-decoration: none;
}

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

.code-block {
    background: var(--color-secondary);
    color: var(--color-text-light);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    margin: var(--space-md) 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
}

.alert {
    padding: var(--space-md);
    border-radius: var(--border-radius);
    margin: var(--space-md) 0;
    border-left: 4px solid;
}

.alert-tip {
    background: #e8f5e9;
    border-color: #4caf50;
}

.alert-warning {
    background: #fff3e0;
    border-color: #ff9800;
}

.alert-info {
    background: #e3f2fd;
    border-color: #2196f3;
}

.steps {
    counter-reset: step;
    margin: var(--space-md) 0;
}

.step {
    margin-bottom: var(--space-md);
    padding-left: 3rem;
    position: relative;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    background: var(--color-primary);
    color: white;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.doc-nav-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-bg-light);
}

.doc-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.75rem var(--space-md);
    background: var(--color-bg-light);
    color: var(--color-text-dark);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}

.doc-nav-btn:hover,
.doc-nav-btn:focus {
    background: var(--color-primary);
    color: white;
}

.mobile-menu-toggle {
    display: none;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }

    .hero {
        padding: var(--space-xl) var(--space-md);
    }

    .hero .subtitle {
        font-size: 1.125rem;
    }

    .feature-grid,
    .use-case-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    /* Documentation mobile styles */
    .doc-sidebar {
        position: fixed;
        left: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 100;
        width: 280px;
        box-shadow: 2px 0 8px rgba(0,0,0,0.1);
    }

    .doc-sidebar.mobile-open {
        transform: translateX(0);
    }

    .doc-main {
        margin-left: 0;
        padding: var(--space-md);
    }

    .mobile-menu-toggle {
        display: block;
        position: fixed;
        top: var(--space-md);
        left: var(--space-md);
        z-index: 101;
        background: var(--color-primary);
        color: white;
        border: none;
        padding: var(--space-xs) var(--space-sm);
        border-radius: var(--border-radius);
        cursor: pointer;
        font-weight: 600;
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }

    .mobile-menu-toggle:hover,
    .mobile-menu-toggle:focus {
        background: var(--color-link-hover);
    }

    .doc-article h1 {
        font-size: 2rem;
        margin-top: var(--space-xl);
    }

    .doc-article h2 {
        font-size: 1.5rem;
    }

    .doc-meta {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .doc-nav-buttons {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .doc-nav-btn {
        width: 100%;
        justify-content: space-between;
    }

    .steps .step {
        padding-left: 2.5rem;
    }

    .steps .step::before {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.875rem;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .navbar,
    .hero-buttons,
    .footer {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }
}