/* =============================================================================
   CodeReplacements.ai - Main Stylesheet
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Design Tokens (CSS Custom Properties)
   ----------------------------------------------------------------------------- */
:root {
    /* Brand Colors */
    --color-primary: #37c0fb;
    --color-primary-dark: #2ba0d8;
    --color-primary-light: #5fd0ff;
    --color-primary-bg: rgba(55, 192, 251, 0.08);
    --color-primary-border: rgba(55, 192, 251, 0.2);

    /* Neutral Palette */
    --color-text: #1a1a2e;
    --color-text-secondary: #555;
    --color-text-muted: #777;
    --color-text-light: #999;
    --color-bg: #ffffff;
    --color-bg-alt: #f7f9fc;
    --color-bg-dark: #1a1a2e;
    --color-bg-darker: #12121f;
    --color-border: #e2e8f0;
    --color-border-light: #f0f0f0;

    /* Accent Colors */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-ai-purple: #8b5cf6;
    --color-ai-purple-bg: rgba(139, 92, 246, 0.08);

    /* Typography */
    --font-body: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* 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;
    --space-24: 6rem;

    /* Layout */
    --max-width: 1200px;
    --nav-height: 72px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --shadow-nav: 0 2px 8px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* -----------------------------------------------------------------------------
   Base Reset & Typography
   ----------------------------------------------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height) + var(--space-4));
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

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

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

/* -----------------------------------------------------------------------------
   Layout
   ----------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-20) 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-dark {
    background: var(--color-bg-dark);
    color: #fff;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: #fff;
}

.section-dark p {
    color: rgba(255, 255, 255, 0.7);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--text-lg);
}

/* -----------------------------------------------------------------------------
   Site Header (Centered Logo Above Nav — matches codereplacements.com)
   ----------------------------------------------------------------------------- */
.site-header {
    text-align: center;
    padding: 0.75rem 0 0;
    background: var(--color-bg);
}

.site-header #logo {
    display: block;
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    text-decoration: none;
}

.site-header #logo svg {
    width: 100%;
    height: auto;
}

.site-header .logo-text-fallback {
    position: absolute;
    left: -9999px;
    overflow: hidden;
}

/* When site-header is present, center the nav links below it */
.site-header + .nav .nav-inner {
    justify-content: center;
}

.site-header + .nav .nav-toggle {
    position: absolute;
    right: var(--space-6);
}

/* -----------------------------------------------------------------------------
   Navigation
   ----------------------------------------------------------------------------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    height: var(--nav-height);
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-nav);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav-logo {
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-decoration: none;
    flex-shrink: 0;
    line-height: 1;
}

.nav-logo .logo-text {
    font-family: 'EB Garamond', Georgia, 'Times New Roman', serif;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.nav-logo .logo-text .logo-code {
    color: var(--color-text);
}

.nav-logo .logo-text .logo-replacements {
    color: var(--color-primary);
}

.nav-logo .logo-text .logo-ai {
    color: var(--color-primary);
    font-size: 1.5rem;
}

.nav-logo .logo-tagline {
    font-family: var(--font-body);
    font-size: 0.55rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-links a {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    letter-spacing: 0.01em;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a.nav-cta {
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-2) var(--space-5);
    border-radius: var(--border-radius-full);
    font-size: var(--text-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-links a.nav-cta:hover {
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
}

.nav-links .nav-external {
    color: var(--color-primary-dark);
    font-weight: 600;
    font-size: var(--text-sm);
    border-left: 1px solid var(--color-border);
    padding-left: var(--space-8);
    background: var(--color-primary-bg);
    padding: var(--space-2) var(--space-4);
    padding-left: var(--space-4);
    margin-left: var(--space-4);
    border-left: none;
    border-radius: var(--border-radius);
}

.nav-links .nav-external:hover {
    color: var(--color-primary);
    background: rgba(55, 192, 251, 0.15);
}

/* Hamburger Menu */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
.nav-mobile {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999;
    padding: var(--space-8) var(--space-6);
}

.nav-mobile.open {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.nav-mobile a {
    display: block;
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text);
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-border-light);
    text-decoration: none;
}

.nav-mobile a:hover,
.nav-mobile a.active {
    color: var(--color-primary);
}

.nav-mobile a.nav-cta {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-full);
    border-bottom: none;
    margin-top: var(--space-4);
    text-align: center;
}

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-8);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(55, 192, 251, 0.3);
}

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

.btn-secondary:hover {
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

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

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-lg {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
}

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

.btn-disabled:hover {
    transform: none;
    box-shadow: none;
}

/* -----------------------------------------------------------------------------
   Hero Section
   ----------------------------------------------------------------------------- */
.hero {
    padding: var(--space-16) 0 var(--space-20);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero-content h1 {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero-content h1 .highlight {
    color: var(--color-primary);
}

.hero-content .hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    align-items: center;
}

.hero-note {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-4);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-placeholder {
    width: 100%;
    max-width: 540px;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, #e8f4fd 100%);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
}

.hero-placeholder i {
    font-size: 3rem;
    color: var(--color-primary);
    opacity: 0.5;
}

.hero-placeholder span {
    font-size: var(--text-sm);
}

/* -----------------------------------------------------------------------------
   Stats Bar
   ----------------------------------------------------------------------------- */
.stats-bar {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-10) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-8);
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

/* -----------------------------------------------------------------------------
   Card Components
   ----------------------------------------------------------------------------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

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

.cards-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-8);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-icon {
    width: 56px;
    height: 56px;
    background: var(--color-primary-bg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    font-size: var(--text-2xl);
    color: var(--color-primary);
}

.card-icon.purple {
    background: var(--color-ai-purple-bg);
    color: var(--color-ai-purple);
}

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

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

/* Step Cards */
.step-card {
    text-align: center;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-lg);
    margin: 0 auto var(--space-5);
}

/* -----------------------------------------------------------------------------
   Feature Sections (Alternating)
   ----------------------------------------------------------------------------- */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    padding: var(--space-16) 0;
}

.feature-row:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.feature-row.reverse .feature-text {
    order: 2;
}

.feature-row.reverse .feature-visual {
    order: 1;
}

.feature-text .feature-badge {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: var(--color-primary-bg);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-4);
}

.feature-text .feature-badge.ai {
    color: var(--color-ai-purple);
    background: var(--color-ai-purple-bg);
}

.feature-text .feature-badge.free {
    color: var(--color-success);
    background: rgba(34, 197, 94, 0.08);
}

.feature-text h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.feature-text p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-6);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    font-size: var(--text-base);
    color: var(--color-text-secondary);
}

.feature-list li i {
    color: var(--color-primary);
    margin-top: 4px;
    flex-shrink: 0;
}

.feature-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, #e8f4fd 100%);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
}

.feature-placeholder i {
    font-size: 2.5rem;
    color: var(--color-primary);
    opacity: 0.4;
}

.feature-placeholder span {
    font-size: var(--text-sm);
}

/* -----------------------------------------------------------------------------
   Highlight / Free Tier Section
   ----------------------------------------------------------------------------- */
.highlight-section {
    background: linear-gradient(135deg, #f0fafe 0%, #e8f4fd 100%);
    border: 1px solid var(--color-primary-border);
    border-radius: var(--border-radius-xl);
    padding: var(--space-12);
    margin: var(--space-8) 0;
}

.highlight-section h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}

.highlight-section .patent-badge {
    display: inline-block;
    background: var(--color-ai-purple-bg);
    color: var(--color-ai-purple);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--border-radius-full);
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-3);
}

.highlight-section .free-badge {
    display: inline-block;
    background: var(--color-success);
    color: #fff;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

/* -----------------------------------------------------------------------------
   CTA Banner
   ----------------------------------------------------------------------------- */
.cta-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e8bbf 100%);
    padding: var(--space-16) 0;
    text-align: center;
    color: #fff;
}

.cta-banner h2 {
    color: #fff;
    margin-bottom: var(--space-4);
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--text-lg);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

/* -----------------------------------------------------------------------------
   Pricing Cards
   ----------------------------------------------------------------------------- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card .tier-name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-2);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.pricing-card .image-counts {
    text-align: left;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-alt);
    border-radius: var(--border-radius);
}

.pricing-card .image-counts p {
    margin: var(--space-1) 0;
    line-height: 1.5;
}

.pricing-card .image-counts strong {
    color: var(--color-text);
}

.pricing-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    padding: var(--space-10);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
}

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

.pricing-card.popular {
    border-color: var(--color-primary);
}

.pricing-card .popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-1) var(--space-5);
    border-radius: var(--border-radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.pricing-card .credits {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.pricing-card .credits-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.pricing-card .price {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.pricing-card .price-note {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.pricing-card .per-credit {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius);
    display: inline-block;
    margin-bottom: var(--space-6);
}

.pricing-card ul {
    text-align: left;
    margin-bottom: var(--space-6);
}

.pricing-card ul li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.pricing-card ul li i {
    color: var(--color-success);
    flex-shrink: 0;
}

/* Credit Tiers Table */
.credit-tiers {
    max-width: 700px;
    margin: var(--space-12) auto;
}

.credit-tiers table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.credit-tiers th,
.credit-tiers td {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.credit-tiers th {
    background: var(--color-bg-alt);
    font-weight: 700;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.credit-tiers td {
    font-size: var(--text-base);
}

.credit-tiers tr:last-child td {
    border-bottom: none;
}

.tier-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
}

.tier-badge.fast {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.tier-badge.balanced {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.tier-badge.standard {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.tier-badge.premium {
    background: var(--color-ai-purple-bg);
    color: var(--color-ai-purple);
}

.tier-badge.recommended {
    font-size: var(--text-xs);
    background: var(--color-success);
    color: #fff;
    margin-left: var(--space-2);
    vertical-align: middle;
}

/* -----------------------------------------------------------------------------
   Comparison Table
   ----------------------------------------------------------------------------- */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin: var(--space-8) 0;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-4) var(--space-5);
    text-align: center;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--text-sm);
}

.comparison-table th {
    background: var(--color-bg-dark);
    color: #fff;
    font-weight: 700;
    font-size: var(--text-sm);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
    text-align: left;
    font-weight: 600;
}

.comparison-table th.highlight-col {
    background: var(--color-primary);
}

.comparison-table td.highlight-col {
    background: var(--color-primary-bg);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table .check {
    color: var(--color-success);
}

.comparison-table .cross {
    color: var(--color-text-light);
}

/* -----------------------------------------------------------------------------
   FAQ Accordion
   ----------------------------------------------------------------------------- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-3);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    gap: var(--space-4);
}

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

.faq-question::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.open .faq-question::after {
    transform: rotate(180deg);
}

/* Also support inline chevron icon */
.faq-question i {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.open .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-answer-inner,
.faq-answer > p,
.faq-answer > div:not(.faq-answer-inner) {
    padding: 0 var(--space-6) var(--space-5);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-answer-inner a,
.faq-answer a {
    color: var(--color-primary);
    text-decoration: underline;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-category {
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin: var(--space-8) 0 var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-border);
}

/* -----------------------------------------------------------------------------
   Page Header
   ----------------------------------------------------------------------------- */
.page-header {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1e2d4a 100%);
    padding: var(--space-16) 0 var(--space-12);
    text-align: center;
    color: #fff;
}

.page-header h1 {
    color: #fff;
    margin-bottom: var(--space-4);
}

.page-header p {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

/* -----------------------------------------------------------------------------
   Download Section
   ----------------------------------------------------------------------------- */
.download-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius-xl);
    padding: var(--space-12);
}

.download-box .app-icon {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 22px;
    margin: 0 auto var(--space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2.5rem;
}

.download-box h2 {
    margin-bottom: var(--space-3);
}

.download-box .coming-soon-badge {
    display: inline-block;
    background: var(--color-warning);
    color: #fff;
    padding: var(--space-1) var(--space-4);
    border-radius: var(--border-radius-full);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-6);
}

/* System Requirements */
.req-table {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    border-collapse: collapse;
}

.req-table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--text-sm);
}

.req-table td:first-child {
    font-weight: 600;
    color: var(--color-text);
    width: 40%;
}

.req-table td:last-child {
    color: var(--color-text-secondary);
}

/* -----------------------------------------------------------------------------
   Getting Started / Steps
   ----------------------------------------------------------------------------- */
.steps-list {
    max-width: 700px;
    margin: 0 auto;
    counter-reset: step;
}

.step-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-6) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.step-item:last-child {
    border-bottom: none;
}

.step-item::before {
    counter-increment: step;
    content: counter(step);
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-sm);
}

.step-item h4 {
    margin-bottom: var(--space-2);
}

.step-item p {
    font-size: var(--text-sm);
    margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.6);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
    max-width: 320px;
    line-height: 1.7;
}

.footer-brand .footer-logo {
    margin-bottom: var(--space-4);
}

.footer-brand .footer-logo .logo-text .logo-code {
    color: #fff;
}

.footer-brand .footer-logo .logo-tagline {
    color: rgba(255, 255, 255, 0.4);
}

.footer h4 {
    color: #fff;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-5);
}

.footer-links-list {
    list-style: none;
}

.footer-links-list li {
    margin-bottom: var(--space-3);
}

.footer-links-list a {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

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

.footer-social a {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--text-lg);
    transition: color var(--transition-fast);
}

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

/* -----------------------------------------------------------------------------
   Utility Classes
   ----------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* -----------------------------------------------------------------------------
   Responsive Breakpoints
   ----------------------------------------------------------------------------- */

/* Tablet (< 1024px) */
@media (max-width: 1024px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }

    .hero-content h1 {
        font-size: var(--text-4xl);
    }

    .hero-grid {
        gap: var(--space-8);
    }

    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 800px;
    }

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

    .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-6);
    }

    .feature-row {
        gap: var(--space-8);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

/* Mobile (< 640px) */
@media (max-width: 640px) {
    :root {
        --nav-height: 56px;
    }

    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }
    h3 { font-size: var(--text-xl); }

    .container {
        padding: 0 var(--space-4);
    }

    .section {
        padding: var(--space-12) 0;
    }

    /* Nav mobile */
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        padding: var(--space-8) 0 var(--space-12);
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .hero-content h1 {
        font-size: var(--text-3xl);
    }

    .hero-content .hero-subtitle {
        font-size: var(--text-base);
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .stat-number {
        font-size: var(--text-2xl);
    }

    /* Cards */
    .cards-grid,
    .cards-grid-2,
    .cards-grid-4 {
        grid-template-columns: 1fr;
    }

    .card {
        padding: var(--space-6);
    }

    /* Features */
    .feature-row {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding: var(--space-10) 0;
    }

    .feature-row.reverse .feature-text,
    .feature-row.reverse .feature-visual {
        order: unset;
    }

    .feature-text h2 {
        font-size: var(--text-2xl);
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .pricing-card {
        padding: var(--space-6);
    }

    /* Page header */
    .page-header {
        padding: var(--space-10) 0 var(--space-8);
    }

    /* Highlight */
    .highlight-section {
        padding: var(--space-8);
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    /* Comparison table horizontal scroll */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .comparison-table {
        min-width: 500px;
    }
}