/* ==========================================================================
   SearchAI - AI-Powered Search Engine Template
   Ultra-minimal, clean design inspired by Perplexity
   ========================================================================== */

/* ==========================================================================
   DESIGN TOKENS
   ========================================================================== */

:root {
    /* Colors - Ultra minimal with teal accent */
    --color-primary: #14B8A6;
    --color-primary-dark: #0D9488;
    --color-primary-light: #5EEAD4;
    --color-primary-50: rgba(20, 184, 166, 0.1);
    --color-primary-100: rgba(20, 184, 166, 0.15);

    /* Neutral palette - Pure whites and grays */
    --color-white: #FFFFFF;
    --color-bg: #FFFFFF;
    --color-surface: #FAFAFA;
    --color-surface-alt: #F5F5F5;
    --color-border: #E5E5E5;
    --color-border-light: #F0F0F0;

    /* Text colors */
    --color-text-primary: #0A0A0A;
    --color-text-secondary: #525252;
    --color-text-tertiary: #737373;
    --color-text-muted: #A3A3A3;

    /* Semantic colors */
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Type scale - Ultra clean */
    --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: clamp(2.5rem, 5vw, 3rem);
    --text-6xl: clamp(3rem, 6vw, 3.75rem);
    --text-hero: clamp(3.5rem, 8vw, 5rem);

    /* Font weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line heights */
    --leading-tight: 1.2;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Letter spacing */
    --tracking-tighter: -0.05em;
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;

    /* Spacing scale */
    --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;
    --space-32: 8rem;
    --space-40: 10rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows - Subtle and minimal */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    --shadow-search: 0 4px 20px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.03);
    --shadow-search-focus: 0 4px 24px rgba(20, 184, 166, 0.15), 0 0 0 2px rgba(20, 184, 166, 0.2);
    --shadow-glow: 0 0 40px rgba(20, 184, 166, 0.2);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* Container widths */
    --container-xs: 32rem;
    --container-sm: 40rem;
    --container-md: 48rem;
    --container-lg: 64rem;
    --container-xl: 80rem;
}

/* Dark mode */
[data-theme="dark"],
.dark {
    --color-bg: #0A0A0A;
    --color-surface: #141414;
    --color-surface-alt: #1A1A1A;
    --color-border: #262626;
    --color-border-light: #1F1F1F;

    --color-text-primary: #FAFAFA;
    --color-text-secondary: #A3A3A3;
    --color-text-tertiary: #737373;
    --color-text-muted: #525252;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
    --shadow-search: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
    --shadow-search-focus: 0 4px 24px rgba(20, 184, 166, 0.25), 0 0 0 2px rgba(20, 184, 166, 0.3);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

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

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* Selection */
::selection {
    background-color: var(--color-primary-100);
    color: var(--color-text-primary);
}

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

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-primary);
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-5xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

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

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

/* ==========================================================================
   LAYOUT
   ========================================================================== */

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

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

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

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

/* Section spacing */
.section {
    padding: var(--space-24) 0;
}

.section-sm {
    padding: var(--space-16) 0;
}

.section-lg {
    padding: var(--space-32) 0;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-slow);
}

.dark .nav {
    background: rgba(10, 10, 10, 0.8);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.nav-logo svg {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.nav-links {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.nav-mobile-toggle:hover {
    background: var(--color-surface);
}

@media (min-width: 768px) {
    .nav-mobile-toggle {
        display: none;
    }
}

/* Mobile menu */
.mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    padding: var(--space-6);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-slow) var(--ease-out-expo);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.mobile-menu-link {
    display: block;
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.mobile-menu-link:hover {
    background: var(--color-surface);
    color: var(--color-text-primary);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

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

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

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

.btn-ghost:hover {
    background: var(--color-surface);
    color: var(--color-text-primary);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   HERO - SEARCH FOCUSED
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-32) var(--space-6) var(--space-16);
    text-align: center;
}

.hero-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-16);
}

.hero-logo svg {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
}

.hero-logo-text {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
}

.hero-tagline {
    font-size: var(--text-lg);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-12);
    max-width: 36rem;
}

/* Search box */
.search-wrapper {
    width: 100%;
    max-width: 680px;
    margin-bottom: var(--space-10);
}

.search-box {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: var(--space-5) var(--space-6);
    padding-right: 120px;
    font-family: var(--font-sans);
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-search);
    transition: all var(--transition-base);
}

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

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

.search-actions {
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.search-btn-mic {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-btn-mic:hover {
    background: var(--color-surface);
    color: var(--color-primary);
}

.search-btn-submit {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-btn-submit:hover {
    background: var(--color-primary-dark);
    transform: scale(1.02);
}

/* Sample questions */
.sample-questions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-16);
}

.sample-question {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sample-question:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Stats row */
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border-light);
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.hero-stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */

.features {
    padding: var(--space-24) 0;
    background: var(--color-surface);
}

.section-header {
    text-align: center;
    max-width: 48rem;
    margin: 0 auto var(--space-16);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-primary);
    background: var(--color-primary-50);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

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

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.feature-card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
    color: var(--color-primary);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

/* ==========================================================================
   AI ANSWER DEMO
   ========================================================================== */

.demo-section {
    padding: var(--space-24) 0;
}

.demo-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
}

.demo-query {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.demo-query svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.demo-query-text {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
}

.demo-answer {
    margin-bottom: var(--space-6);
}

.demo-answer-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.demo-answer-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-lg);
    color: white;
}

.demo-answer-label {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-primary);
}

.demo-answer-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.demo-answer-text p + p {
    margin-top: var(--space-4);
}

/* Sources */
.demo-sources {
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--space-6);
}

.demo-sources-label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.demo-sources-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .demo-sources-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.source-card {
    padding: var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.source-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.source-favicon {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-2);
}

.source-title {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.source-domain {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* Follow-up questions */
.demo-followups {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

.demo-followups-label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.followup-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.followup-btn {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.followup-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.followup-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ==========================================================================
   PRICING
   ========================================================================== */

.pricing {
    padding: var(--space-24) 0;
    background: var(--color-surface);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

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

.pricing-card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    position: relative;
}

.pricing-badge {
    position: absolute;
    top: calc(-1 * var(--space-3));
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: white;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.pricing-name {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
}

.pricing-description {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-6);
}

.pricing-price {
    margin-bottom: var(--space-6);
}

.pricing-amount {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
}

.pricing-period {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.pricing-features li svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 1px;
}

.pricing-cta {
    width: 100%;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.cta {
    padding: var(--space-24) 0;
    text-align: center;
}

.cta-inner {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-16);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-3xl);
    color: white;
}

.cta-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: white;
}

.cta-description {
    font-size: var(--text-lg);
    opacity: 0.9;
    margin-bottom: var(--space-8);
    color: white;
}

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

.cta .btn:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--color-border-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr repeat(4, 1fr);
    }
}

.footer-brand {
    grid-column: span 2;
}

@media (min-width: 768px) {
    .footer-brand {
        grid-column: span 1;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.footer-logo svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    max-width: 280px;
}

.footer-column h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
}

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

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

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border-light);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

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

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

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    background: var(--color-surface);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-primary);
    background: var(--color-primary-50);
}

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

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-5);
}

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

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-50);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-2);
}

/* Checkbox */
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--color-primary);
}

.form-checkbox label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ==========================================================================
   PAGE HEADER
   ========================================================================== */

.page-header {
    padding: var(--space-40) 0 var(--space-16);
    text-align: center;
    background: var(--color-surface);
}

.page-header-inner {
    max-width: 48rem;
    margin: 0 auto;
}

.page-title {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-4);
}

.page-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

/* ==========================================================================
   CONTENT SECTIONS
   ========================================================================== */

.content-section {
    padding: var(--space-16) 0;
}

.content-prose {
    max-width: 48rem;
    margin: 0 auto;
}

.content-prose h2 {
    font-size: var(--text-2xl);
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
}

.content-prose h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
}

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

.content-prose ul,
.content-prose ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
    color: var(--color-text-secondary);
}

.content-prose li {
    margin-bottom: var(--space-2);
}

.content-prose a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ==========================================================================
   BLOG
   ========================================================================== */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-8);
}

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

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

.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.blog-card-image {
    aspect-ratio: 16/9;
    background: var(--color-surface);
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-category {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.blog-card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
}

.blog-card-excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list {
    max-width: 48rem;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border-light);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-6) 0;
    font-family: var(--font-sans);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    text-align: left;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.faq-question svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question svg {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding-bottom: var(--space-6);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.faq-item.active .faq-answer {
    display: block;
}

/* ==========================================================================
   API DOCS
   ========================================================================== */

.api-endpoint {
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
}

.api-method {
    display: inline-flex;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    font-family: var(--font-mono);
    text-transform: uppercase;
    border-radius: var(--radius-md);
    margin-right: var(--space-3);
}

.api-method.get {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.api-method.post {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.api-path {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-primary);
}

.api-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-3);
}

.code-block {
    padding: var(--space-5);
    background: #1a1a1a;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--space-4) 0;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: #e5e5e5;
    line-height: var(--leading-relaxed);
}

/* ==========================================================================
   AUTH PAGES
   ========================================================================== */

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    padding: var(--space-10);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.auth-logo svg {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
}

.auth-logo span {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.auth-title {
    font-size: var(--text-2xl);
    text-align: center;
    margin-bottom: var(--space-2);
}

.auth-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.auth-divider span {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: var(--font-medium);
}

/* Social login buttons */
.social-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

/* ==========================================================================
   CARDS & TILES
   ========================================================================== */

.card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
}

.card-hover {
    transition: all var(--transition-base);
}

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

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
}

.stat-value {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

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

/* Team grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-8);
}

@media (min-width: 640px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.team-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-surface);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.team-card:hover {
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    width: 96px;
    height: 96px;
    border-radius: var(--radius-full);
    object-fit: cover;
    margin: 0 auto var(--space-4);
    border: 3px solid var(--color-primary-50);
}

.team-name {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.team-role {
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.team-bio {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s var(--ease-out-expo);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s var(--ease-out-expo);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.8s var(--ease-out-expo);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Typing animation */
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--color-primary); }
}

.typing-text {
    overflow: hidden;
    border-right: 2px solid var(--color-primary);
    white-space: nowrap;
    animation: typing 2s steps(40, end), blink-caret 0.75s step-end infinite;
}

/* Pulse animation */
@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Float animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Gradient shift */
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 4s ease infinite;
}

/* AI dots animation */
@keyframes dot-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.ai-thinking .dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    margin: 0 2px;
    animation: dot-pulse 1.4s ease-in-out infinite;
}

.ai-thinking .dot:nth-child(1) { animation-delay: 0s; }
.ai-thinking .dot:nth-child(2) { animation-delay: 0.2s; }
.ai-thinking .dot:nth-child(3) { animation-delay: 0.4s; }

/* 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;
    }

    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */

.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;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }

@media (min-width: 768px) {
    .md\:hidden { display: none; }
    .md\:block { display: block; }
    .md\:flex { display: flex; }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .nav,
    .footer,
    .btn,
    .mobile-menu {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    a {
        text-decoration: underline;
    }

    .container {
        max-width: 100%;
    }
}

/* ==========================================================================
   SCROLLBAR
   ========================================================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* Dark mode scrollbar */
.dark ::-webkit-scrollbar-track {
    background: var(--color-surface);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--color-border);
}