/* ============================================
   TAXEL TECH - Premium Enterprise CSS
   ============================================ */

/* ============================================
   1. CSS VARIABLES
   ============================================ */
:root {
    /* Color Palette - Light Professional Theme */
    --color-void: #f8fafc;
    --color-base: #ffffff;
    --color-surface: #f1f5f9;
    --color-elevated: #e2e8f0;
    --color-overlay: #cbd5e1;

    /* Primary - Deep Indigo */
    --color-primary: #4f46e5;
    --color-primary-light: #6366f1;
    --color-primary-dark: #4338ca;
    --color-primary-glow: rgba(79, 70, 229, 0.15);

    /* Accent - Purple */
    --color-accent: #7c3aed;
    --color-accent-light: #8b5cf6;
    --color-accent-glow: rgba(124, 58, 237, 0.15);

    /* Text Hierarchy */
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-text-faint: #94a3b8;

    /* Borders & Glass */
    --color-border: rgba(15, 23, 42, 0.08);
    --color-border-light: rgba(15, 23, 42, 0.12);
    --color-glass: rgba(255, 255, 255, 0.7);
    --color-glass-hover: rgba(255, 255, 255, 0.9);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-hero:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing (8-point grid) */
    --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;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3), 0 4px 10px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px var(--color-primary-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-index */
    --z-header: 1000;
    --z-mobile-menu: 999;
    --z-modal: 1100;
}

/* ============================================
   2. RESET & BASE
   ============================================ */
*, *::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-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-base);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    z-index: 9999;
    transition: top var(--transition-fast);
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
    font-weight: 800;
    letter-spacing: -0.04em;
}

h2 {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
}

h3 {
    font-size: clamp(var(--font-size-xl), 2vw, var(--font-size-2xl));
}

h4 {
    font-size: var(--font-size-lg);
}

p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   4. BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-primary-glow), var(--shadow-glow);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--secondary {
    background: var(--color-glass);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

.btn--lg {
    padding: var(--space-5) var(--space-10);
    font-size: var(--font-size-lg);
}

.btn--full {
    width: 100%;
}

.btn__icon {
    display: flex;
    transition: transform var(--transition-fast);
}

.btn:hover .btn__icon {
    transform: translateX(4px);
}

.btn__loading {
    display: none;
    align-items: center;
    gap: var(--space-2);
}

.btn.is-loading .btn__text {
    display: none;
}

.btn.is-loading .btn__loading {
    display: flex;
}

.btn__spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   5. HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: var(--space-5) 0;
    transition: all var(--transition-base);
}

.header.is-scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header.is-hidden {
    transform: translateY(-100%);
}

.header__nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.header__logo-mark {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    position: relative;
}

.header__logo-mark::before {
    content: 'T';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: var(--font-size-lg);
    color: white;
}

.header__logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header__logo-tech {
    font-weight: 400;
    opacity: 0.7;
    margin-left: 0.1em;
}

/* Desktop Menu */
.header__menu {
    display: flex;
    align-items: center;
    gap: var(--space-10);
}

.header__menu-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--space-2) 0;
}

.header__menu-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.header__menu-link:hover,
.header__menu-link.is-active {
    color: var(--color-text-primary);
}

.header__menu-link:hover::after {
    width: 100%;
}

.header__menu-link--cta {
    padding: var(--space-3) var(--space-6);
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.header__menu-link--cta:hover {
    background: var(--color-glass-hover);
    border-color: var(--color-primary);
}

.header__menu-link--cta::after {
    display: none;
}

/* Mobile Toggle */
.header__mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: calc(var(--z-mobile-menu) + 1);
}

.header__mobile-toggle-bar {
    width: 24px;
    height: 2px;
    background: #0f172a;
    transition: all var(--transition-fast);
    transform-origin: center;
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(2) {
    opacity: 0;
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.header__mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: var(--z-mobile-menu);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.header__mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.header__mobile-menu-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
}

.header__mobile-menu-link {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
}

.header__mobile-menu-link:hover,
.header__mobile-menu-link:active {
    color: var(--color-text-primary);
    background: rgba(79, 70, 229, 0.05);
}

.header__mobile-menu-link--cta {
    padding: var(--space-4) var(--space-8);
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
}

/* ============================================
   6. HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--space-32) 0 var(--space-16);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero__bg-gradient {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero__bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(79, 70, 229, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 70, 229, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 0%, transparent 70%);
}

.hero__bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.hero__bg-orb--1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
    opacity: 0.08;
}

.hero__bg-orb--2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    bottom: -100px;
    left: -100px;
    opacity: 0.06;
}

.hero__bg-orb--3 {
    width: 300px;
    height: 300px;
    background: #8b5cf6;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.04;
}

.hero__container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-16);
}

.hero__content {
    max-width: 900px;
    text-align: center;
}

.hero__eyebrow {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: rgba(79, 70, 229, 0.1);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
}

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

.hero__title-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    max-width: 700px;
    margin: 0 auto var(--space-10);
}

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

/* Client Logos */
.hero__clients {
    text-align: center;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.hero__clients-label {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-6);
    padding: var(--space-2) var(--space-4);
    background: rgba(15, 23, 42, 0.03);
    border-radius: var(--radius-full);
}

.hero__clients-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.hero__clients-logo {
    width: 100px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    opacity: 0.6;
    transition: all var(--transition-base);
}

.hero__clients-logo:hover {
    opacity: 1;
    color: var(--color-text-secondary);
}

.hero__clients-logo svg {
    width: 100%;
    height: 100%;
    font-family: var(--font-family);
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.hero__scroll-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   7. SECTION HEADERS
   ============================================ */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-header__eyebrow {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-4);
}

.section-header--light .section-header__eyebrow,
.section-header__eyebrow--light {
    color: #22d3ee;
}

.section-header--light .section-header__title {
    color: #f8fafc;
}

.section-header--light .section-header__subtitle {
    color: rgba(248, 250, 252, 0.75);
}

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

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

/* ============================================
   8. PLATFORMS SECTION
   ============================================ */
.platforms {
    padding: var(--space-32) 0;
    background: var(--color-surface);
}

.platform-category {
    margin-bottom: var(--space-16);
}

.platform-category:last-child {
    margin-bottom: 0;
}

.platform-category__header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.platform-category__icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: var(--radius-md);
}

.platform-category__icon svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary-light);
}

.platform-category__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.platform-category__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

/* Platform Cards */
.platform-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.platform-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-glow), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.platform-card:hover {
    border-color: rgba(79, 70, 229, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.12);
}

.platform-card:hover::before {
    opacity: 0.03;
}

.platform-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    position: relative;
}

.platform-card__name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.platform-card__badge {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-1) var(--space-3);
    background: rgba(79, 70, 229, 0.1);
    border-radius: var(--radius-full);
}

.platform-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    position: relative;
}

.platform-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    position: relative;
    padding: var(--space-2) 0;
}

.platform-card__link svg {
    transition: transform var(--transition-fast);
}

.platform-card__link:hover {
    color: var(--color-primary-dark);
}

.platform-card__link:hover svg {
    transform: translateX(4px);
}

/* ============================================
   9. AI ENGINES SECTION
   ============================================ */
.engines {
    padding: var(--space-32) 0;
    position: relative;
    background: #0f172a;
}

.engines__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.engines__bg-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(79, 70, 229, 0.15), transparent);
}

.engines__container {
    position: relative;
    z-index: 1;
}

.engines__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--space-6);
}

/* Engine Cards */
.engine-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-slow);
}

.engine-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.engine-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-4px);
}

.engine-card:hover::before {
    transform: scaleX(1);
}

.engine-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.engine-card__name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #f8fafc;
}

.engine-card__tm {
    font-size: var(--font-size-xs);
    color: #22d3ee;
    vertical-align: super;
}

.engine-card__badge {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: #22d3ee;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: var(--space-1) var(--space-3);
    background: rgba(34, 211, 238, 0.15);
    border-radius: var(--radius-sm);
}

.engine-card__tagline {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: rgba(248, 250, 252, 0.6);
    margin-bottom: var(--space-4);
}

.engine-card__description {
    font-size: var(--font-size-sm);
    color: rgba(248, 250, 252, 0.75);
    line-height: 1.7;
}

.engine-card__glow {
    position: absolute;
    bottom: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.engine-card:hover .engine-card__glow {
    opacity: 0.3;
}

/* ============================================
   10. CAPABILITIES SECTION
   ============================================ */
.capabilities {
    padding: var(--space-32) 0;
    background: var(--color-surface);
}

.capabilities__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-10);
}

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

.capability__number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.2;
    line-height: 1;
    flex-shrink: 0;
}

.capability__content {
    padding-top: var(--space-2);
}

.capability__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.capability__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   11. STATS SECTION
   ============================================ */
.stats {
    padding: var(--space-20) 0;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.05;
    pointer-events: none;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    position: relative;
}

.stats__item {
    text-align: center;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.stats__item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.stats__value {
    display: block;
    font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-6xl));
    font-weight: 800;
    letter-spacing: -0.03em;
    color: white;
    margin-bottom: var(--space-2);
}

.stats__label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   12. CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--space-32) 0;
    background: var(--color-surface);
    position: relative;
}

.contact__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.contact__bg-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 60% at 30% 70%, rgba(79, 70, 229, 0.05), transparent);
}

.contact__container {
    position: relative;
    z-index: 1;
}

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

.contact__title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    margin-bottom: var(--space-6);
}

.contact__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-10);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact__detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.contact__detail-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact__detail-icon svg {
    width: 100%;
    height: 100%;
}

.contact__detail-link,
.contact__detail-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

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

/* Contact Form */
.contact-form {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.contact-form__honeypot {
    position: absolute;
    left: -9999px;
}

.contact-form__group {
    margin-bottom: var(--space-6);
}

.contact-form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.contact-form__required {
    color: #ef4444;
}

.contact-form__input,
.contact-form__textarea,
.contact-form__select {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-text-primary);
    background: #f8fafc;
    border: 1px solid var(--color-elevated);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.contact-form__input:focus,
.contact-form__textarea:focus,
.contact-form__select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    background: #ffffff;
}

.contact-form__input::placeholder,
.contact-form__textarea::placeholder {
    color: var(--color-text-faint);
}

.contact-form__input.has-error,
.contact-form__textarea.has-error {
    border-color: #ef4444;
}

.contact-form__textarea {
    min-height: 120px;
    resize: vertical;
}

.contact-form__select-wrapper {
    position: relative;
}

.contact-form__select {
    appearance: none;
    cursor: pointer;
    padding-right: var(--space-12);
}

.contact-form__select-arrow {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--color-text-muted);
}

.contact-form__error {
    display: none;
    font-size: var(--font-size-sm);
    color: #ef4444;
    margin-top: var(--space-2);
}

.contact-form__error.is-visible {
    display: block;
}

/* Checkbox */
.contact-form__group--checkbox {
    margin-top: var(--space-8);
}

.contact-form__checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
}

.contact-form__checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.contact-form__checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: all var(--transition-fast);
    position: relative;
    margin-top: 2px;
}

.contact-form__checkbox:checked + .contact-form__checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.contact-form__checkbox:checked + .contact-form__checkbox-custom::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.contact-form__checkbox-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.contact-form__checkbox-text a {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact-form__submit {
    margin-top: var(--space-8);
}

/* ============================================
   12a. CONTACT PAGE STYLES
   ============================================ */
.header--solid {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.contact-hero {
    padding: var(--space-32) 0 var(--space-16);
    background: var(--color-surface);
}

.contact-hero__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact-hero__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    margin-bottom: var(--space-4);
}

.contact-hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.contact-page {
    padding: var(--space-16) 0 var(--space-32);
    background: var(--color-base);
}

.contact-page__wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-page__info-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-8);
}

.contact-page__note {
    margin-top: var(--space-12);
    padding: var(--space-6);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.contact-page__note-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.contact-page__steps {
    list-style: decimal;
    padding-left: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.contact-page__steps li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .contact-page__wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .contact-hero {
        padding: var(--space-24) 0 var(--space-12);
    }

    .contact-page {
        padding: var(--space-10) 0 var(--space-20);
    }
}

.contact-form__status {
    margin-top: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    display: none;
}

.contact-form__status.is-success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.contact-form__status.is-error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* ============================================
   12b. CTA SECTION
   ============================================ */
.cta {
    padding: var(--space-24) 0;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.05;
    pointer-events: none;
}

.cta__container {
    position: relative;
    z-index: 1;
}

.cta__content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta__title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    color: white;
    margin-bottom: var(--space-4);
}

.cta__description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-8);
}

.cta__btn {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.cta__btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* ============================================
   13. FOOTER
   ============================================ */
.footer {
    padding: var(--space-20) 0 var(--space-10);
    background: #0f172a;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__main {
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: var(--space-16);
    margin-bottom: var(--space-16);
}

/* Footer Brand */
.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer__logo-mark {
    width: 28px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    position: relative;
}

.footer__logo-mark::before {
    content: 'T';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: var(--font-size-sm);
    color: white;
}

.footer__logo-text {
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer__logo-tech {
    font-weight: 400;
    opacity: 0.7;
    margin-left: 0.1em;
}

.footer__tagline {
    color: rgba(248, 250, 252, 0.6);
    font-size: var(--font-size-sm);
}

/* Footer Links */
.footer__links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.footer__column-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #f8fafc;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-5);
}

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

.footer__link {
    font-size: var(--font-size-sm);
    color: rgba(248, 250, 252, 0.6);
    transition: color var(--transition-fast);
    padding: var(--space-1) 0;
    display: inline-block;
}

.footer__link:hover {
    color: #f8fafc;
}

@media (max-width: 768px) {
    .footer__link {
        padding: var(--space-2) 0;
    }
}

/* Social Links */
.footer__social {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.footer__social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: rgba(248, 250, 252, 0.6);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #f8fafc;
    border-color: rgba(99, 102, 241, 0.5);
}

/* Footer Bottom */
.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-10);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: rgba(248, 250, 252, 0.5);
}

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

.footer__legal-link {
    font-size: var(--font-size-sm);
    color: rgba(248, 250, 252, 0.5);
}

.footer__legal-link:hover {
    color: #f8fafc;
}

.footer__legal-separator {
    color: rgba(248, 250, 252, 0.3);
}

/* ============================================
   14. ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Animation Classes */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade"] {
    transform: none;
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].is-visible {
    opacity: 1;
    transform: translate(0);
}

/* ============================================
   15. RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__main {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

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

    .contact__wrapper {
        gap: var(--space-12);
    }

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

@media (max-width: 768px) {
    .header__menu {
        display: none;
    }

    .header__mobile-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: var(--space-32) 0 var(--space-20);
    }

    .hero__scroll {
        display: none;
    }

    .hero__actions {
        flex-direction: column;
        width: 100%;
    }

    .hero__actions .btn {
        width: 100%;
    }

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

    .hero__clients-label {
        font-size: 10px;
        padding: var(--space-1) var(--space-3);
        margin-bottom: var(--space-5);
    }

    .hero__clients-logos {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4) var(--space-3);
        justify-items: center;
    }

    .hero__clients-logo {
        width: 70px;
        height: 24px;
    }

    .platform-category__grid,
    .engines__grid,
    .capabilities__grid {
        grid-template-columns: 1fr;
    }

    .contact__wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

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

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }

    .footer__brand {
        text-align: center;
        margin-bottom: var(--space-8);
    }

    .footer__logo {
        justify-content: center;
    }

    .footer__links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8) var(--space-6);
    }

    .footer__column {
        text-align: left;
    }

    .footer__social {
        justify-content: flex-start;
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-5);
        text-align: center;
        padding-top: var(--space-8);
    }

    .footer__legal {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-2) var(--space-4);
    }

    .footer__legal-separator {
        display: none;
    }

    .footer__legal-link {
        position: relative;
    }

    .footer__legal-link:not(:last-child)::after {
        content: '\2022';
        position: absolute;
        right: calc(-1 * var(--space-2) - 2px);
        color: rgba(248, 250, 252, 0.3);
    }

    .platforms,
    .engines,
    .capabilities,
    .contact {
        padding: var(--space-20) 0;
    }

    .section-header {
        margin-bottom: var(--space-12);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

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

    .footer__links {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6) var(--space-4);
    }

    .footer__column-title {
        font-size: 11px;
        margin-bottom: var(--space-4);
    }

    .footer__column-list {
        gap: var(--space-2);
    }

    .footer__link {
        font-size: var(--font-size-xs);
    }

    .footer__social {
        margin-top: var(--space-4);
    }

    .footer__social-link {
        width: 32px;
        height: 32px;
    }

    .capability {
        flex-direction: column;
        gap: var(--space-2);
    }

    .capability__number {
        font-size: var(--font-size-4xl);
    }

    .hero__clients-logos {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4) var(--space-2);
    }

    .hero__clients-logo {
        width: 65px;
        height: 22px;
    }

    .hero__clients-logo:last-child {
        grid-column: 1 / -1;
        justify-self: center;
    }

    .footer__legal {
        flex-direction: column;
        gap: var(--space-2);
    }

    .footer__legal-link:not(:last-child)::after {
        display: none;
    }
}

/* ============================================
   16. BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--color-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.back-to-top:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: var(--space-4);
        right: var(--space-4);
        width: 44px;
        height: 44px;
    }
}

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

    html {
        scroll-behavior: auto;
    }

    [data-animate] {
        opacity: 1;
        transform: none;
    }
}