/* ============================================================
   TEVQO — Design System & Global Styles
   Premium Device Access Platform
   ============================================================ */

/* --- Custom Properties ------------------------------------ */
:root {
  /* Colors */
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-surface-alt: #f4f4f5;
  --color-border: #e4e4e7;
  --color-border-light: #f0f0f2;
  --color-text: #18181b;
  --color-text-secondary: #52525b;
  --color-text-tertiary: #a1a1aa;
  --color-primary: #18181b;
  --color-primary-hover: #27272a;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #eff6ff;
  --color-success: #16a34a;
  --color-success-light: #f0fdf4;
  --color-negative: #dc2626;
  --color-negative-light: #fef2f2;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-w: 1200px;
  --max-w-narrow: 800px;
  --container-px: var(--space-6);

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

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.07);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.08);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.76, 0, 0.24, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* --- Utility ---------------------------------------------- */
.container {
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

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

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

/* --- Section Spacing -------------------------------------- */
.section { padding-top: var(--space-24); padding-bottom: var(--space-24); }

@media (max-width: 768px) {
  .section { padding-top: var(--space-16); padding-bottom: var(--space-16); }
}

.section__label {
  font-size: var(--text-sm); font-weight: 600;
  text-transform: uppercase; letter-spacing: var(--tracking-wide);
  color: var(--color-accent); margin-bottom: var(--space-3);
}

.section__headline {
  font-family: var(--font-display); font-size: var(--text-4xl); font-weight: 700;
  letter-spacing: var(--tracking-tight); line-height: var(--leading-tight);
  color: var(--color-text); margin-bottom: var(--space-4);
}

@media (max-width: 768px) {
  .section__headline { font-size: var(--text-3xl); }
}

.section__subtitle {
  font-size: var(--text-lg); color: var(--color-text-secondary); max-width: 560px;
}

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

.section__header--center {
  text-align: center; display: flex; flex-direction: column; align-items: center;
}

.section__headline--center { text-align: center; margin-bottom: var(--space-10); }
.section__subtitle--center { text-align: center; margin: 0 auto var(--space-8); }

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-2); font-weight: 600; font-size: var(--text-base);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap; line-height: 1.5;
}

.btn--primary { background-color: var(--color-primary); color: #fff; }
.btn--primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px); box-shadow: var(--shadow-lg);
}

.btn--accent { background-color: var(--color-accent); color: #fff; }
.btn--accent:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px); box-shadow: var(--shadow-lg);
}

.btn--outline {
  background: transparent; color: var(--color-text); border: 1.5px solid var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-text); background: var(--color-surface-alt);
}

.btn--ghost {
  background: transparent; color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
}
.btn--ghost:hover { color: var(--color-text); background: var(--color-surface-alt); }

.btn--lg {
  padding: var(--space-4) var(--space-8); font-size: var(--text-lg); border-radius: var(--radius-xl);
}
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.btn__icon { width: 18px; height: 18px; }

/* Focus visible */
.btn:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

/* --- Navigation ------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--duration-normal) var(--ease-out);
}

.nav--scrolled { background: rgba(255, 255, 255, 0.95); box-shadow: var(--shadow-sm); }

.nav__inner {
  display: flex; align-items: center; justify-content: space-between; height: 72px;
}

.nav__logo {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800;
  letter-spacing: -0.03em; color: var(--color-text);
}

.nav__links { display: flex; align-items: center; gap: var(--space-1); }

.nav__link {
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}
.nav__link:hover { color: var(--color-text); background: var(--color-surface-alt); }
.nav__link--active { color: var(--color-text); background: var(--color-surface-alt); }

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

.nav__lang {
  display: flex; align-items: center; gap: 2px;
  background: var(--color-surface-alt); border-radius: var(--radius-full); padding: 3px;
}

.nav__lang a {
  font-size: var(--text-xs); font-weight: 600;
  padding: var(--space-1) var(--space-2); border-radius: var(--radius-full);
  color: var(--color-text-tertiary); transition: all var(--duration-fast) var(--ease-out);
  line-height: 1.4;
}
.nav__lang a:hover { color: var(--color-text-secondary); }
.nav__lang a.active {
  background: var(--color-surface); color: var(--color-text); box-shadow: var(--shadow-sm);
}

/* Burger */
.nav__burger {
  display: none; flex-direction: column; gap: 5px; width: 24px; padding: 4px 0; cursor: pointer;
}
.nav__burger span {
  display: block; height: 2px; background: var(--color-text);
  border-radius: 2px; transition: all var(--duration-normal) var(--ease-out);
}
.nav__burger.is-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.nav__mobile {
  display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
  background: var(--color-surface); padding: var(--space-8) var(--space-6);
  z-index: 99; flex-direction: column; gap: var(--space-2); overflow-y: auto;
}
.nav__mobile.is-open { display: flex; }
.nav__mobile a {
  font-size: var(--text-lg); font-weight: 500; padding: var(--space-3) 0;
  color: var(--color-text); border-bottom: 1px solid var(--color-border-light);
}

.nav__mobile-lang {
  display: flex; gap: var(--space-3); padding-top: var(--space-4);
  margin-top: var(--space-4); border-top: 1px solid var(--color-border-light);
}
.nav__mobile-lang a {
  font-size: var(--text-sm); font-weight: 600; color: var(--color-text-tertiary);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); border-bottom: none;
}
.nav__mobile-lang a.active { color: var(--color-text); background: var(--color-surface-alt); }

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
}

/* --- Hero ------------------------------------------------- */
.hero {
  padding-top: calc(72px + var(--space-20)); padding-bottom: var(--space-20);
  text-align: center; position: relative; overflow: hidden;
}

.hero::before {
  content: ''; position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__headline {
  font-family: var(--font-display); font-size: var(--text-6xl); font-weight: 800;
  letter-spacing: -0.035em; line-height: var(--leading-tight); color: var(--color-text);
  margin-bottom: var(--space-6); white-space: pre-line; max-width: 700px;
  margin-left: auto; margin-right: auto;
}

@media (max-width: 768px) {
  .hero__headline { font-size: var(--text-4xl); }
  .hero { padding-top: calc(72px + var(--space-12)); padding-bottom: var(--space-12); }
}
@media (max-width: 480px) { .hero__headline { font-size: var(--text-3xl); } }

.hero__sub {
  font-size: var(--text-lg); color: var(--color-text-secondary);
  max-width: 520px; margin: 0 auto var(--space-10); line-height: var(--leading-normal);
}

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

/* Hero Trust Micro Badges */
.hero__trust {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-6); margin-top: var(--space-8); flex-wrap: wrap;
}
.hero__trust-badge {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary);
}
.hero__trust-badge svg { width: 16px; height: 16px; color: var(--color-success); }

@media (max-width: 480px) {
  .hero__trust { gap: var(--space-4); }
}

/* --- What Is ---------------------------------------------- */
.what-is__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8);
}
@media (max-width: 768px) { .what-is__grid { grid-template-columns: 1fr; gap: var(--space-6); } }

.what-is__card {
  padding: var(--space-8); background: var(--color-surface);
  border: 1px solid var(--color-border-light); border-radius: var(--radius-2xl);
  transition: all var(--duration-normal) var(--ease-out);
}
.what-is__card:hover {
  border-color: var(--color-border); box-shadow: var(--shadow-md); transform: translateY(-2px);
}

.what-is__icon {
  width: 48px; height: 48px; border-radius: var(--radius-lg);
  background: var(--color-accent-light); display: flex; align-items: center;
  justify-content: center; margin-bottom: var(--space-5); color: var(--color-accent);
}
.what-is__icon svg { width: 24px; height: 24px; }

.what-is__title {
  font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); color: var(--color-text);
}
.what-is__text {
  font-size: var(--text-base); color: var(--color-text-secondary); line-height: var(--leading-normal);
}

/* --- How It Works ----------------------------------------- */
.how__steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); position: relative;
}
@media (max-width: 900px) { .how__steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .how__steps { grid-template-columns: 1fr; } }

.how__step { text-align: center; padding: var(--space-8) var(--space-4); }

.how__number {
  font-family: var(--font-display); font-size: var(--text-5xl); font-weight: 800;
  letter-spacing: -0.03em; line-height: 1; margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-accent), rgba(37, 99, 235, 0.3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.how__step-title {
  font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-3); color: var(--color-text);
}
.how__step-text {
  font-size: var(--text-sm); color: var(--color-text-secondary); line-height: var(--leading-normal);
}

/* --- Devices ---------------------------------------------- */
.devices__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 768px) { .devices__grid { grid-template-columns: 1fr; gap: var(--space-4); } }

.device-card {
  background: var(--color-surface); border: 1px solid var(--color-border-light);
  border-radius: var(--radius-2xl); overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}
.device-card:hover {
  border-color: var(--color-border); box-shadow: var(--shadow-lg); transform: translateY(-3px);
}

.device-card__image {
  width: 100%; aspect-ratio: 4/3; background: var(--color-surface-alt);
  display: flex; align-items: center; justify-content: center; padding: var(--space-8);
}
.device-card__image-placeholder {
  width: 120px; height: 120px; border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #e8e8ec 0%, #d4d4d8 100%);
  display: flex; align-items: center; justify-content: center;
}
.device-card__image-placeholder svg { width: 48px; height: 48px; color: var(--color-text-tertiary); }

.device-card__body { padding: var(--space-6); }
.device-card__name { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-1); }
.device-card__specs { font-size: var(--text-sm); color: var(--color-text-tertiary); margin-bottom: var(--space-4); }
.device-card__footer { display: flex; align-items: center; justify-content: space-between; }
.device-card__price { display: flex; align-items: baseline; gap: var(--space-1); }
.device-card__amount { font-size: var(--text-2xl); font-weight: 800; color: var(--color-text); }
.device-card__period { font-size: var(--text-sm); color: var(--color-text-tertiary); }

.devices__more { text-align: center; margin-top: var(--space-10); }

/* --- Comparison ------------------------------------------- */
.comparison { background: var(--color-surface); }

.comparison__subheadline {
  text-align: center; max-width: 560px; font-size: var(--text-lg);
  color: var(--color-text-secondary); margin: 0 auto;
}

.comparison__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); }
@media (max-width: 768px) { .comparison__grid { grid-template-columns: 1fr; } }

.comparison__col { padding: var(--space-8); border-radius: var(--radius-2xl); }
.comparison__col--buy { background: var(--color-negative-light); border: 1px solid rgba(220, 38, 38, 0.1); }
.comparison__col--rental { background: var(--color-surface-alt); border: 1px solid var(--color-border-light); }
.comparison__col--tevqo { background: var(--color-success-light); border: 1px solid rgba(22, 163, 74, 0.1); }

.comparison__col-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-6); }
.comparison__list { display: flex; flex-direction: column; gap: var(--space-4); }
.comparison__item {
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-base); line-height: var(--leading-snug);
}
.comparison__icon {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center; margin-top: 1px;
}
.comparison__col--buy .comparison__icon,
.comparison__col--rental .comparison__icon { background: rgba(220, 38, 38, 0.1); color: var(--color-negative); }
.comparison__col--rental .comparison__icon { background: rgba(161, 161, 170, 0.15); color: var(--color-text-tertiary); }
.comparison__col--tevqo .comparison__icon { background: rgba(22, 163, 74, 0.1); color: var(--color-success); }
.comparison__icon svg { width: 14px; height: 14px; }

.comparison__bottom-line {
  text-align: center; margin-top: var(--space-8);
  font-size: var(--text-lg); font-weight: 600; color: var(--color-text-secondary);
}

/* --- Trust Bar -------------------------------------------- */
.trust-bar {
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}
.trust-bar__inner {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-12); padding: var(--space-8) 0; flex-wrap: wrap;
}
.trust-bar__item {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-secondary);
}
.trust-bar__icon {
  width: 40px; height: 40px; border-radius: var(--radius-lg);
  background: var(--color-surface); border: 1px solid var(--color-border-light);
  display: flex; align-items: center; justify-content: center; color: var(--color-accent);
}
.trust-bar__icon svg { width: 20px; height: 20px; }

@media (max-width: 768px) {
  .trust-bar__inner { gap: var(--space-6); justify-content: flex-start; }
}

/* --- FAQ -------------------------------------------------- */
.faq__list {
  max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-2);
}
.faq__item {
  border: 1px solid var(--color-border-light); border-radius: var(--radius-xl);
  overflow: hidden; background: var(--color-surface);
  transition: all var(--duration-normal) var(--ease-out);
}
.faq__item:hover { border-color: var(--color-border); }

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

.faq__chevron {
  width: 20px; height: 20px; flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-out); color: var(--color-text-tertiary);
}
.faq__item.is-open .faq__chevron { transform: rotate(180deg); }

.faq__answer {
  max-height: 0; overflow: hidden; transition: max-height var(--duration-slow) var(--ease-out);
}
.faq__answer-inner {
  padding: 0 var(--space-6) var(--space-6); font-size: var(--text-base);
  color: var(--color-text-secondary); line-height: var(--leading-normal);
}

.faq__more { text-align: center; margin-top: var(--space-8); }

/* --- Final CTA -------------------------------------------- */
.final-cta { background: var(--color-text); color: #fff; text-align: center; }
.final-cta .section__headline { color: #fff; }

.final-cta__text {
  font-size: var(--text-lg); color: rgba(255,255,255,0.7); margin-bottom: var(--space-8);
  max-width: 460px; margin-left: auto; margin-right: auto;
}

.final-cta__form {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-3); max-width: 460px; margin: 0 auto; flex-wrap: wrap;
}
.final-cta__input {
  flex: 1; min-width: 220px; padding: var(--space-4) var(--space-5);
  border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.08); color: #fff; font-size: var(--text-base);
  font-family: var(--font-sans); outline: none;
  transition: all var(--duration-fast) var(--ease-out);
}
.final-cta__input::placeholder { color: rgba(255,255,255,0.4); }
.final-cta__input:focus { border-color: var(--color-accent); background: rgba(255,255,255,0.12); }

.final-cta__submit { padding: var(--space-4) var(--space-8); }

.final-cta__privacy {
  font-size: var(--text-sm); color: rgba(255,255,255,0.4);
  margin-top: var(--space-4); text-align: center;
}

.final-cta__success {
  display: none; font-size: var(--text-base); color: rgba(255,255,255,0.8); margin-top: var(--space-4);
}
.final-cta__success.is-visible { display: block; }

/* --- Footer ----------------------------------------------- */
.footer {
  background: var(--color-text); color: rgba(255,255,255,0.5);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8); margin-bottom: var(--space-12);
}
@media (max-width: 768px) { .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); } }
@media (max-width: 480px) { .footer__grid { grid-template-columns: 1fr; } }

.footer__brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__logo {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800;
  color: #fff; letter-spacing: -0.03em;
}
.footer__tagline { font-size: var(--text-sm); line-height: var(--leading-normal); max-width: 260px; }
.footer__summary {
  font-size: var(--text-sm); color: rgba(255,255,255,0.4);
  line-height: var(--leading-normal); max-width: 260px; margin-top: var(--space-2);
}

.footer__section-title {
  font-size: var(--text-sm); font-weight: 600; color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-4); text-transform: uppercase; letter-spacing: var(--tracking-wide);
}
.footer__list { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__list a {
  font-size: var(--text-sm); color: rgba(255,255,255,0.5);
  transition: color var(--duration-fast) var(--ease-out);
}
.footer__list a:hover { color: #fff; }

.footer__bottom {
  padding-top: var(--space-8); border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--space-4);
}
.footer__copy { font-size: var(--text-sm); }

.footer__bottom-lang { display: flex; gap: var(--space-3); }
.footer__bottom-lang a {
  font-size: var(--text-sm); font-weight: 500; color: rgba(255,255,255,0.4);
  transition: color var(--duration-fast);
}
.footer__bottom-lang a:hover,
.footer__bottom-lang a.active { color: #fff; }

/* --- Animations ------------------------------------------- */
.fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

.stagger > .fade-up:nth-child(1) { transition-delay: 0ms; }
.stagger > .fade-up:nth-child(2) { transition-delay: 80ms; }
.stagger > .fade-up:nth-child(3) { transition-delay: 160ms; }
.stagger > .fade-up:nth-child(4) { transition-delay: 240ms; }
.stagger > .fade-up:nth-child(5) { transition-delay: 320ms; }

/* --- Reduced Motion --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  .btn:hover, .device-card:hover, .what-is__card:hover, .benefit-card:hover {
    transform: none;
  }
  .faq__chevron { transition: none; }
  html { scroll-behavior: auto; }
}