/* ==========================================================================
   MVLabs — Design System
   ========================================================================== */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: rgba(17, 17, 24, 0.6);
  --bg-card-hover: rgba(26, 26, 36, 0.8);

  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #5a5a70;

  --accent-violet: #7c3aed;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, var(--accent-violet), var(--accent-cyan));

  --border-subtle: rgba(124, 58, 237, 0.15);
  --border-hover: rgba(124, 58, 237, 0.35);

  --header-height: 72px;
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
  --transition: 0.25s ease;
}

/* Reset & Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
}

.logo__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  background-image: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  border: 1px solid var(--border-subtle);
  font-size: 1rem;
  -webkit-text-fill-color: initial;
  color: var(--accent-violet);
}

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

/* Navigation
   ========================================================================== */

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__list {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.nav__cta {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.45);
}

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

.btn--secondary:hover {
  border-color: var(--border-hover);
  background: rgba(124, 58, 237, 0.08);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Hero
   ========================================================================== */

.hero {
  padding-top: calc(var(--header-height) + 4rem);
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  gap: 3rem;
  align-items: center;
}

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

.badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero__desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.stat__value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.stat__label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

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

.hero__visual img {
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
  filter: drop-shadow(var(--shadow-glow));
}

/* Sections
   ========================================================================== */

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-violet);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* Services
   ========================================================================== */

.services {
  padding: 6rem 0;
  background: var(--bg-secondary);
}

.services__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  margin-bottom: 4rem;
}

.card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-violet);
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.services__visual img {
  width: 100%;
  border-radius: var(--radius-lg);
}

/* Process
   ========================================================================== */

.process {
  padding: 6rem 0;
}

.process__steps {
  display: grid;
  gap: 2rem;
  max-width: 720px;
  margin-inline: auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem;
  border-left: 2px solid var(--border-subtle);
  transition: border-color var(--transition);
}

.step:hover {
  border-left-color: var(--accent-violet);
}

.step__number {
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.step__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

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

.cta {
  padding: 6rem 0;
}

.cta__inner {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.cta__inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
}

.cta__desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: 2rem;
  position: relative;
}

.cta__inner .btn {
  position: relative;
}

/* Footer
   ========================================================================== */

.footer {
  padding-top: 4rem;
  border-top: 1px solid var(--border-subtle);
}

.footer__inner {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 320px;
  line-height: 1.65;
}

.footer__heading {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.footer__links li:not(:has(a)) {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.footer__bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-subtle);
}

.footer__bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

/* Animations
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .card:hover {
    transform: none;
  }
}

/* Responsive — Tablet (768px+)
   ========================================================================== */

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

  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* Responsive — Desktop (1024px+)
   ========================================================================== */

@media (min-width: 1024px) {
  .nav__cta {
    display: inline-flex;
  }

  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  .hero__visual img {
    margin-inline: 0;
    margin-left: auto;
  }

  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .process__steps {
    max-width: 100%;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .step {
    border-left: none;
    border-top: 2px solid var(--border-subtle);
    flex-direction: column;
    gap: 1rem;
  }

  .step:hover {
    border-left-color: transparent;
    border-top-color: var(--accent-violet);
  }
}

/* Responsive — Mobile nav (<768px)
   ========================================================================== */

@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1.5rem;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
  }

  .nav__link {
    display: block;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav__cta {
    display: inline-flex;
    margin-top: 1rem;
    justify-content: center;
  }

  .stats {
    gap: 1.5rem;
  }

  .stat {
    flex: 1 1 calc(50% - 0.75rem);
    min-width: 120px;
  }
}