/* ============================================================
   ARISTEL TECHNOLOGIES — Design System
   ============================================================ */

:root {
  /* Brand gradient */
  --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.16), rgba(6, 182, 212, 0.1));

  /* Brand colors (constant across themes) */
  --primary: #6366f1;
  --primary-secondary: #8b5cf6;
  --primary-accent: #06b6d4;

  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --max-width: 1200px;

  --font: Inter, "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, sans-serif;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- DARK THEME (default) ---------- */
:root,
[data-theme="dark"] {
  color-scheme: dark;

  --background: #070b14;
  --background-alt: #0b1120;
  --surface: #101827;
  --surface-light: #162033;

  --text: #f8fafc;
  --heading: #ffffff;
  --muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --shadow: 0 26px 60px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 14px 34px rgba(0, 0, 0, 0.35);

  --glass: rgba(11, 17, 32, 0.72);
  --glass-nav: rgba(7, 11, 20, 0.65);

  --hero-overlay: linear-gradient(
    90deg,
    rgba(7, 11, 20, 0.97) 0%,
    rgba(7, 11, 20, 0.82) 52%,
    rgba(7, 11, 20, 0.6) 100%
  );
  --grid-line: rgba(255, 255, 255, 0.04);
  --btn-secondary-bg: rgba(255, 255, 255, 0.04);
  --btn-secondary-text: var(--text);
}

/* ---------- LIGHT THEME ---------- */
[data-theme="light"] {
  color-scheme: light;

  --background: #f7f9fd;
  --background-alt: #eef2fb;
  --surface: #ffffff;
  --surface-light: #f3f6fd;

  --text: #1f2a3d;
  --heading: #0b1120;
  --muted: #5a6b85;
  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.16);

  --shadow: 0 26px 60px rgba(30, 41, 92, 0.14);
  --shadow-sm: 0 14px 30px rgba(30, 41, 92, 0.1);

  --glass: rgba(255, 255, 255, 0.75);
  --glass-nav: rgba(255, 255, 255, 0.72);

  --hero-overlay: linear-gradient(
    90deg,
    rgba(247, 249, 253, 0.96) 0%,
    rgba(247, 249, 253, 0.82) 50%,
    rgba(247, 249, 253, 0.5) 100%
  );
  --grid-line: rgba(15, 23, 42, 0.05);
  --btn-secondary-bg: rgba(99, 102, 241, 0.06);
  --btn-secondary-text: var(--heading);
}

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

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--background);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 44px, var(--max-width));
  margin: 0 auto;
}

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

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-nav);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

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

.nav-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  color: var(--heading);
}

.nav-logo-wrap {
  position: relative;
  flex-shrink: 0;
  padding: 2px;
  border-radius: 13px;
  background: var(--gradient);
  box-shadow: 0 8px 22px rgba(99, 102, 241, 0.35);
}

.nav-logo {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  object-fit: cover;
  display: block;
  background: var(--surface);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.4px;
}

.brand-sub {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  padding: 9px 14px;
  border-radius: 9px;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--heading);
  background: var(--btn-secondary-bg);
}

.nav-cta {
  color: #ffffff !important;
  background: var(--gradient);
  font-weight: 700 !important;
  padding: 10px 18px !important;
  box-shadow: 0 10px 24px rgba(99, 102, 241, 0.32);
}

.nav-cta:hover {
  background: var(--gradient) !important;
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--btn-secondary-bg);
  color: var(--text);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition),
    transform var(--transition);
}

.theme-toggle:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  min-width: 46px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--btn-secondary-bg);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition),
    transform var(--transition);
}

.lang-toggle:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--btn-secondary-bg);
  color: var(--text);
  cursor: pointer;
}

.menu-button svg {
  width: 22px;
  height: 22px;
}

.menu-button .icon-close {
  display: none;
}

.menu-button[aria-expanded="true"] .icon-open {
  display: none;
}

.menu-button[aria-expanded="true"] .icon-close {
  display: block;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 50px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), border-color var(--transition), filter var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: #ffffff;
  box-shadow: 0 14px 32px rgba(99, 102, 241, 0.34);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 44px rgba(99, 102, 241, 0.5);
  filter: brightness(1.05);
}

.btn-secondary {
  border-color: var(--border-strong);
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.55);
  background: rgba(99, 102, 241, 0.1);
}

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

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  padding: 160px 0 110px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--hero-overlay),
    radial-gradient(circle at 75% 30%, rgba(99, 102, 241, 0.22), transparent 35%),
    radial-gradient(circle at 90% 70%, rgba(6, 182, 212, 0.16), transparent 30%),
    url("/images/cover.jpg") center / cover no-repeat;
}

/* subtle grid */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 60% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 60% 40%, #000 0%, transparent 75%);
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  width: 460px;
  height: 460px;
  right: -120px;
  bottom: -170px;
  background: rgba(99, 102, 241, 0.28);
  animation: float 14s ease-in-out infinite;
}

.orb-2 {
  width: 340px;
  height: 340px;
  right: 28%;
  top: -140px;
  background: rgba(6, 182, 212, 0.2);
  animation: float 18s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-26px, 30px);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--gradient-soft);
  color: var(--primary-accent);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gradient);
}

.section-heading .eyebrow {
  margin-bottom: 20px;
}

h1 {
  color: var(--heading);
  font-size: clamp(38px, 6.4vw, 70px);
  line-height: 1.05;
  letter-spacing: -1.8px;
  font-weight: 800;
}

.hero-description {
  max-width: 720px;
  margin-top: 26px;
  color: var(--muted);
  font-size: clamp(17px, 1.9vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 36px;
}

.hero-note {
  margin-top: 26px;
  color: var(--muted);
  font-size: 14px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.hero-stat strong {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: var(--heading);
}

.hero-stat strong.gradient-text {
  color: transparent;
}

.hero-stat span {
  color: var(--muted);
  font-size: 13.5px;
}

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

.section {
  position: relative;
  padding: 110px 0;
}

.section-alt {
  background: var(--background-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-heading {
  max-width: 800px;
  margin-bottom: 56px;
}

.section-heading.centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading.centered .eyebrow {
  margin-inline: auto;
}

.section h2 {
  color: var(--heading);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
  letter-spacing: -1px;
  font-weight: 800;
}

.section-heading p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
}

/* ============================================================
   ABOUT
   ============================================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.about-copy h2 {
  color: var(--heading);
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.8px;
  font-weight: 800;
}

.about-copy p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 17.5px;
}

.about-box {
  position: relative;
  padding: 42px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: var(--gradient-soft), var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
}

.about-box::before {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  top: -70px;
  right: -70px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.18;
  filter: blur(30px);
}

.about-box h3 {
  position: relative;
  color: var(--heading);
  font-size: clamp(22px, 2.6vw, 27px);
  line-height: 1.3;
  font-weight: 800;
}

.about-box p {
  position: relative;
  margin-top: 16px;
  color: var(--muted);
}

/* ============================================================
   SERVICES
   ============================================================ */

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.card {
  position: relative;
  padding: 32px 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.card:hover::before {
  opacity: 1;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--gradient-soft);
  border: 1px solid var(--border-strong);
  color: var(--primary);
  transition: transform var(--transition);
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.card-number {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.45;
  transition: opacity var(--transition);
}

.card:hover .card-number {
  opacity: 1;
}

.card h3 {
  color: var(--heading);
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.3;
  font-weight: 700;
}

.card p {
  color: var(--muted);
  font-size: 15.5px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.card-tags span {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--primary-accent);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid var(--border);
}

/* ============================================================
   APPROACH
   ============================================================ */

.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.approach-copy h2 {
  color: var(--heading);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.9px;
  font-weight: 800;
}

.approach-copy p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 17.5px;
}

.feature-list {
  display: grid;
  gap: 15px;
  margin-top: 32px;
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  color: var(--text);
  font-weight: 500;
}

.feature-list .check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--gradient);
  color: #fff;
  margin-top: 1px;
}

.feature-list .check svg {
  width: 15px;
  height: 15px;
}

.statement-box {
  position: relative;
  padding: 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: var(--gradient-soft), var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
}

.statement-box::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  bottom: -110px;
  left: -90px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.16;
  filter: blur(38px);
}

.statement-box .quote-mark {
  position: relative;
  font-size: 64px;
  line-height: 0.6;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.statement-box strong {
  position: relative;
  display: block;
  margin-top: 18px;
  color: var(--heading);
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.statement-box p {
  position: relative;
  margin-top: 18px;
  color: var(--muted);
}

/* ============================================================
   EXPERTISE
   ============================================================ */

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.expertise-item {
  position: relative;
  padding: 30px 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

.expertise-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.expertise-item:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
}

.expertise-item:hover::before {
  transform: scaleX(1);
}

.expertise-item .exp-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--gradient-soft);
  color: var(--primary);
}

.expertise-item .exp-icon svg {
  width: 24px;
  height: 24px;
}

.expertise-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--heading);
  font-size: 18px;
  font-weight: 700;
}

.expertise-item span {
  color: var(--muted);
  font-size: 14.5px;
}

/* ============================================================
   TELECOM SHOWCASE
   ============================================================ */

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 200px;
  gap: 18px;
}

.showcase-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.showcase-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.showcase-item:hover img {
  transform: scale(1.05);
}

.showcase-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(7, 11, 20, 0.85));
  opacity: 0.9;
  transition: opacity var(--transition);
}

.showcase-caption {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 18px;
  z-index: 2;
  color: #fff;
}

.showcase-caption strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.showcase-caption span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

.showcase-item.large {
  grid-column: span 3;
  grid-row: span 2;
}

.showcase-item.wide {
  grid-column: span 3;
}

.showcase-item.tall {
  grid-column: span 2;
}

/* ============================================================
   TRAINING
   ============================================================ */

.training-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 60px;
  align-items: center;
}

.training-visual {
  position: relative;
  min-height: 400px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: linear-gradient(155deg, rgba(99, 102, 241, 0.14), var(--surface));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.training-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
}

.training-visual .tv-orb {
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.35;
  filter: blur(46px);
  animation: float 16s ease-in-out infinite;
}

.tv-core {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 30px;
}

.tv-core .tv-ring {
  width: 108px;
  height: 108px;
  margin: 0 auto 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--gradient);
  box-shadow: 0 18px 44px rgba(99, 102, 241, 0.45);
}

.tv-core .tv-ring svg {
  width: 48px;
  height: 48px;
  color: #fff;
}

.tv-core strong {
  display: block;
  color: var(--heading);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  font-weight: 800;
  max-width: 340px;
  margin: 0 auto;
}

.tv-labels {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.tv-labels span {
  position: absolute;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  background: var(--glass);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.tv-labels span:nth-child(1) { top: 26px; left: 26px; }
.tv-labels span:nth-child(2) { top: 40px; right: 26px; }
.tv-labels span:nth-child(3) { bottom: 34px; left: 34px; }
.tv-labels span:nth-child(4) { bottom: 46px; right: 30px; }

.training-copy h2 {
  color: var(--heading);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.9px;
  font-weight: 800;
}

.training-copy p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 17.5px;
}

.training-copy .btn {
  margin-top: 30px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.chip {
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}

/* ============================================================
   RESOURCES
   ============================================================ */

.resource-card {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.resource-visual {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(155deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.12)),
    var(--background-alt);
  overflow: hidden;
}

.resource-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
}

.play-button {
  position: relative;
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 18px 50px rgba(99, 102, 241, 0.5);
  transition: transform var(--transition);
}

.play-button svg {
  width: 34px;
  height: 34px;
  margin-left: 4px;
}

.play-button::before,
.play-button::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(99, 102, 241, 0.4);
  animation: pulse-ring 2.6s ease-out infinite;
}

.play-button::after {
  animation-delay: 1.3s;
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

.play-button:hover {
  transform: scale(1.08);
}

.resource-copy {
  padding: 50px;
}

.resource-copy h3 {
  color: var(--heading);
  margin-bottom: 16px;
  font-size: clamp(23px, 2.6vw, 30px);
  line-height: 1.25;
  font-weight: 800;
}

.resource-copy p {
  color: var(--muted);
  font-size: 16.5px;
}

.resource-copy .btn {
  margin-top: 30px;
}

/* ============================================================
   CONTACT
   ============================================================ */

.contact-box {
  position: relative;
  padding: 64px 48px;
  text-align: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.22), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(6, 182, 212, 0.18), transparent 45%),
    var(--surface);
  overflow: hidden;
}

.contact-box .eyebrow {
  margin-inline: auto;
}

.contact-box h2 {
  max-width: 780px;
  margin: 0 auto;
  color: var(--heading);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.9px;
  font-weight: 800;
}

.contact-box p {
  max-width: 640px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 18px;
}

.contact-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

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

footer {
  position: relative;
  padding: 46px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient);
  opacity: 0.6;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.footer-brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  object-fit: cover;
}

.footer-brand strong {
  color: var(--heading);
  font-weight: 800;
  letter-spacing: 0.3px;
}

.footer-copy {
  margin-top: 3px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* ============================================================
   SCROLL REVEAL
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.stagger.visible > * {
  opacity: 1;
  transform: none;
}

.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.12s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.19s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.26s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.33s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.4s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1000px) {
  .nav-links {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 22px 26px;
    background: var(--surface);
    backdrop-filter: blur(18px) saturate(150%);
    -webkit-backdrop-filter: blur(18px) saturate(150%);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition),
      visibility var(--transition);
  }

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

  .nav-links a {
    padding: 13px 14px;
    font-size: 16px;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
    justify-content: center;
  }

  .menu-button {
    display: inline-flex;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .expertise-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-grid,
  .approach-grid,
  .training-grid,
  .resource-card {
    grid-template-columns: 1fr;
  }

  .approach-grid .statement-box,
  .training-grid .training-visual {
    order: -1;
  }

  .showcase-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 190px;
  }

  .showcase-item.large,
  .showcase-item.wide,
  .showcase-item.tall {
    grid-column: span 1;
    grid-row: span 1;
  }

  .showcase-item.large {
    grid-column: span 2;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 30px, var(--max-width));
  }

  .section {
    padding: 78px 0;
  }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
    background-position: 62% center;
  }

  .hero-stats {
    gap: 22px;
  }

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

  .hero-actions .btn,
  .contact-actions .btn {
    width: 100%;
  }

  .cards,
  .expertise-grid,
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .showcase-grid {
    grid-auto-rows: 210px;
  }

  .showcase-item.large {
    grid-column: span 1;
    grid-row: span 1;
  }

  .card,
  .about-box,
  .statement-box,
  .resource-copy,
  .contact-box {
    padding: 28px;
  }

  .resource-visual,
  .training-visual {
    min-height: 280px;
  }

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

  .footer-links {
    justify-content: center;
  }

  h1 {
    letter-spacing: -1px;
  }
}

@media (max-width: 360px) {
  .brand-sub {
    display: none;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .stagger > * {
    opacity: 1 !important;
    transform: none !important;
  }
}