/*
Theme Name: Nanyang Tech
Theme URI: http://nanyangtech.org/
Author: Nanyang Technology & Unisolution Pte. Ltd.
Author URI: http://nanyangtech.org/
Description: Official website theme for Nanyang Technology & Unisolution Pte. Ltd. — AI-powered next-generation applications and wireless telecommunications.
Version: 1.0.0
License: All Rights Reserved
Text Domain: nanyang-tech
Tags: technology, ai, telecommunications, corporate, light
*/

/* =========================================
   CSS CUSTOM PROPERTIES
   ========================================= */
:root {
  --color-bg:          #f8fafc;
  --color-bg2:         #eef2ff;
  --color-surface:     #ffffff;
  --color-surface2:    #f1f5f9;
  --color-border:      rgba(79, 70, 229, 0.12);
  --color-primary:     #4f46e5;
  --color-primary-dim: rgba(79, 70, 229, 0.10);
  --color-accent:      #06b6d4;
  --color-gold:        #f59e0b;
  --color-text:        #0f172a;
  --color-text-mid:    #475569;
  --color-text-dim:    #64748b;
  --color-white:       #ffffff;

  --font-display:      'Sora', sans-serif;
  --font-body:         'DM Sans', sans-serif;
  --font-mono:         'JetBrains Mono', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 10px 24px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 45px rgba(15, 23, 42, 0.10);
  --shadow-glow: 0 18px 55px rgba(79, 70, 229, 0.12), 0 10px 30px rgba(6, 182, 212, 0.08);
}

/* =========================================
   RESET & BASE
   ========================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 45%, #eef2ff 100%);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-pad { padding: 100px 0; }

/* =========================================
   TYPOGRAPHY
   ========================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-white);
}

.label-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.label-tag::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #0f172a 0%, #4f46e5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-mid);
  max-width: 600px;
  line-height: 1.8;
}

/* =========================================
   NOISE OVERLAY
   ========================================= */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 999;
  opacity: 0.4;
}

/* =========================================
   HEADER / NAV
   ========================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2rem;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 32px rgba(0,0,0,0.4);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo-main {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-mid);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-links a:hover { color: var(--color-accent); }
.nav-links a:hover::after { transform: scaleX(1); }

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 22px;
  background: var(--color-primary);
  color: var(--color-bg) !important;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.btn-nav:hover {
  background: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.20);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =========================================
   HERO
   ========================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 2rem 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 600px at 70% 50%, rgba(0, 87, 255, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 20% 60%, rgba(0, 195, 220, 0.06) 0%, transparent 70%),
    var(--color-bg);
}

/* Grid lines */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,195,220,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,195,220,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 80%);
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
  animation: pulse-dot 2s infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--color-white);
}

.hero-title .accent {
  background: linear-gradient(90deg, #4f46e5, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--color-text-mid);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 4px 24px rgba(0, 195, 220, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79, 70, 229, 0.25);
  color: var(--color-white);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  background: rgba(255,255,255,0.75);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orb {
  width: 400px;
  height: 400px;
  border-radius: 50%;
  position: relative;
}

.orb-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(0, 195, 220, 0.2);
  animation: spin-slow 20s linear infinite;
}

.orb-ring:nth-child(2) {
  inset: 20px;
  border-color: rgba(6, 182, 212, 0.15);
  animation-duration: 30s;
  animation-direction: reverse;
}

.orb-ring:nth-child(3) {
  inset: 50px;
  border-color: rgba(79, 70, 229, 0.10);
  animation-duration: 15s;
}

.orb-ring::before {
  content: '';
  position: absolute;
  top: -3px;
  left: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary);
  transform: translateX(-50%);
}

.orb-core {
  position: absolute;
  inset: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.16) 0%, rgba(79, 70, 229, 0.10) 50%, transparent 100%);
  box-shadow: inset 0 0 60px rgba(79, 70, 229, 0.10), var(--shadow-glow);
}

.orb-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Stats bar */
.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.stat-item { }

.stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* =========================================
   SERVICES SECTION
   ========================================= */
.services-section {
  background: var(--color-bg2);
  position: relative;
  overflow: hidden;
}

.services-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  border-color: rgba(79, 70, 229, 0.20);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

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

.service-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  background: var(--color-primary);
  box-shadow: 0 0 24px rgba(79, 70, 229, 0.25);
}

.service-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--color-text-mid);
  line-height: 1.75;
}

/* =========================================
   AI SECTION
   ========================================= */
.ai-section {
  position: relative;
  overflow: hidden;
}

.ai-section::after {
  content: 'AI';
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 20rem;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 195, 220, 0.05);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

.ai-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.ai-features { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 2.5rem; }

.ai-feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.ai-feature-item:hover {
  border-color: rgba(79, 70, 229, 0.20);
  background: var(--color-surface2);
}

.ai-feature-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--color-primary-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.ai-feature-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-white);
}

.ai-feature-text p {
  font-size: 0.825rem;
  color: var(--color-text-mid);
  line-height: 1.6;
}

/* AI Visual */
.ai-visual {
  position: relative;
  height: 420px;
}

.ai-card {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.ai-card-main {
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow: hidden;
}

.ai-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
}

.ai-card-header .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary); box-shadow: 0 0 8px var(--color-primary); }

.ai-code-lines { display: flex; flex-direction: column; gap: 8px; }

.code-line {
  height: 10px;
  border-radius: 5px;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.code-line::after {
  content: '';
  position: absolute;
  left: -100%;
  top: 0; bottom: 0;
  width: 60%;
  background: linear-gradient(90deg, transparent, rgba(0, 195, 220, 0.2), transparent);
  animation: shimmer 2.5s infinite;
}

.code-line:nth-child(1) { width: 80%; }
.code-line:nth-child(2) { width: 60%; animation-delay: 0.2s; }
.code-line:nth-child(3) { width: 90%; animation-delay: 0.4s; }
.code-line:nth-child(4) { width: 45%; animation-delay: 0.6s; }
.code-line:nth-child(5) { width: 70%; animation-delay: 0.8s; }

@keyframes shimmer {
  to { left: 200%; }
}

.ai-metric-badge {
  position: absolute;
  right: -1rem;
  top: 2rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  min-width: 130px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.metric-label {
  font-size: 0.7rem;
  color: var(--color-text-dim);
  margin-top: 2px;
}

/* =========================================
   TELECOM SECTION
   ========================================= */
.telecom-section {
  background: var(--color-bg2);
  position: relative;
  overflow: hidden;
}

.telecom-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 80% 50%, rgba(6, 182, 212, 0.10) 0%, transparent 70%);
}

.telecom-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.telecom-grid-visual {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  order: -1;
}

.telecom-node {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition);
  cursor: default;
}

.telecom-node:hover {
  border-color: rgba(79, 70, 229, 0.25);
  background: var(--color-surface2);
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.telecom-node.active {
  border-color: rgba(79, 70, 229, 0.30);
  background: linear-gradient(135deg, var(--color-primary-dim), var(--color-surface));
  box-shadow: var(--shadow-glow);
}

.telecom-node .node-icon { font-size: 1.5rem; }
.telecom-node .node-label { font-family: var(--font-mono); font-size: 0.6rem; color: var(--color-text-mid); text-transform: uppercase; letter-spacing: 0.08em; text-align: center; }

.telecom-specs { display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }

.spec-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.spec-label { font-size: 0.8rem; color: var(--color-text-mid); flex: 1; }
.spec-value { font-family: var(--font-mono); font-size: 0.85rem; color: var(--color-primary); font-weight: 600; }
.spec-bar { flex: 2; height: 4px; background: var(--color-surface2); border-radius: 2px; overflow: hidden; }
.spec-fill { height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); }

/* =========================================
   WHY SECTION
   ========================================= */
.why-section { position: relative; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.why-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.why-card:hover {
  border-color: rgba(79, 70, 229, 0.20);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.why-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.why-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.why-desc { font-size: 0.825rem; color: var(--color-text-mid); line-height: 1.65; }

/* =========================================
   CTA SECTION
   ========================================= */
.cta-section {
  padding: 100px 2rem;
  position: relative;
  overflow: hidden;
}

.cta-inner {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
}

.cta-inner::after {
  content: '';
  position: absolute;
  bottom: -100px; left: 50%;
  transform: translateX(-50%);
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.10) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.cta-desc {
  font-size: 1rem;
  color: var(--color-text-mid);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact-section {
  background: var(--color-bg2);
  border-top: 1px solid var(--color-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.contact-item:hover {
  transform: translateY(-2px);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-md);
}

.contact-item-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(0, 195, 220, 0.16));
  border: 1px solid rgba(79, 70, 229, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item-text h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-mid);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.contact-item-text p, .contact-item-text a {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.6;
}

.contact-item-text span {
  display: block;
  margin-top: 2px;
  font-size: 0.78rem;
  color: var(--color-text-mid);
  line-height: 1.5;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  font-weight: 700;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--color-primary);
  outline: none;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Contact Form */
.contact-form { display: flex; flex-direction: column; gap: 1rem; margin-top: 2rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-mid);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.10);
}

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

.form-group select option { background: var(--color-surface); }

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  width: 100%;
  border: none;
  font-family: var(--font-body);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 195, 220, 0.35);
}

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 60px 2rem 30px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo-main { font-size: 1.2rem; margin-bottom: 4px; }
.footer-brand .logo-sub { font-size: 0.6rem; }
.footer-brand p { font-size: 0.85rem; color: var(--color-text-mid); line-height: 1.75; margin-top: 1rem; max-width: 280px; }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul li a { font-size: 0.85rem; color: var(--color-text-mid); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--color-accent); }

.footer-divider {
  height: 1px;
  background: var(--color-border);
  margin-bottom: 1.5rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.footer-reg {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-dim);
  letter-spacing: 0.04em;
}

/* =========================================
   MOBILE
   ========================================= */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero-content { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { display: none; }
  .hero-stats { gap: 1.5rem; }

  .ai-content { grid-template-columns: 1fr; }
  .ai-visual { height: 280px; margin-bottom: 2rem; }
  .ai-section::after { display: none; }

  .telecom-content { grid-template-columns: 1fr; }
  .telecom-grid-visual { order: 0; }

  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr 1fr; }

  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .cta-inner { padding: 3rem 1.5rem; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* =========================================
   ANIMATIONS
   ========================================= */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* =========================================
   MODERN VISUAL REFRESH — 2026 EDITION
   Glassmorphism, aurora gradients, richer depth,
   and smoother interactive motion.
   ========================================= */
:root {
  --color-bg: #050816;
  --color-bg2: #07111f;
  --color-surface: rgba(13, 24, 45, 0.72);
  --color-surface2: rgba(20, 34, 62, 0.82);
  --color-border: rgba(124, 232, 255, 0.16);
  --color-primary: #31e6ff;
  --color-primary-dim: rgba(49, 230, 255, 0.12);
  --color-accent: #7c5cff;
  --color-accent2: #00ffa3;
  --color-gold: #ffd166;
  --color-text: #edf7ff;
  --color-text-mid: #9dafc9;
  --color-text-dim: #62708a;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-xl: 36px;
  --shadow-glow: 0 24px 90px rgba(49, 230, 255, 0.14), 0 12px 60px rgba(124, 92, 255, 0.16);
}

body {
  background:
    radial-gradient(circle at 12% 10%, rgba(49, 230, 255, 0.10), transparent 34rem),
    radial-gradient(circle at 88% 8%, rgba(124, 92, 255, 0.14), transparent 38rem),
    linear-gradient(180deg, #050816 0%, #07111f 44%, #050816 100%);
}

body::after {
  content: '';
  position: fixed;
  inset: -25%;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at var(--mx, 50%) var(--my, 20%), rgba(49, 230, 255, 0.10), transparent 22rem),
    conic-gradient(from 180deg at 50% 50%, transparent, rgba(49,230,255,.08), transparent, rgba(124,92,255,.08), transparent);
  filter: blur(24px);
  opacity: .75;
  animation: aurora-drift 18s ease-in-out infinite alternate;
}

@keyframes aurora-drift {
  from { transform: translate3d(-2%, -1%, 0) rotate(0deg) scale(1); }
  to { transform: translate3d(2%, 1%, 0) rotate(8deg) scale(1.05); }
}

.site-header {
  height: 76px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 14px 50px rgba(0,0,0,0.36);
}

.logo-main {
  background: linear-gradient(135deg, #fff 0%, #9df4ff 48%, #c8bdff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links a { padding: 8px 2px; }
.nav-links a::after {
  height: 2px;
  bottom: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent2), var(--color-accent));
}

.btn-nav,
.btn-primary,
.btn-submit {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(135deg, #25dfff 0%, #6b6dff 52%, #00ffa3 130%);
  box-shadow: 0 16px 42px rgba(49, 230, 255, 0.22), inset 0 1px 0 rgba(255,255,255,0.24);
}

.btn-nav::before,
.btn-primary::before,
.btn-submit::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0%, rgba(255,255,255,.42) 45%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .75s ease;
}

.btn-nav:hover::before,
.btn-primary:hover::before,
.btn-submit:hover::before { transform: translateX(120%); }

.btn-outline {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
  backdrop-filter: blur(14px);
}

.hero { isolation: isolate; }
.hero-bg {
  background:
    radial-gradient(ellipse 900px 620px at 72% 38%, rgba(124, 92, 255, 0.18), transparent 68%),
    radial-gradient(ellipse 700px 480px at 18% 58%, rgba(49, 230, 255, 0.14), transparent 72%),
    linear-gradient(135deg, rgba(8,13,32,0.95), rgba(5,8,22,1));
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.04) 42%, transparent 70%);
  transform: translateX(-35%);
  animation: hero-scan 8s ease-in-out infinite;
}
@keyframes hero-scan {
  0%, 100% { transform: translateX(-45%); opacity: .2; }
  50% { transform: translateX(40%); opacity: .55; }
}

.hero-title { letter-spacing: -0.055em; text-wrap: balance; }
.hero-title .accent,
.section-title {
  background: linear-gradient(120deg, #ffffff 0%, #a6fbff 34%, #b8a9ff 68%, #d8fff0 100%);
  background-size: 180% 180%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 9s ease-in-out infinite;
}
@keyframes gradient-shift {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.label-tag,
.hero-eyebrow {
  border-color: rgba(49,230,255,.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 10px 34px rgba(49,230,255,.06);
}

.hero-orb { filter: drop-shadow(0 30px 80px rgba(49,230,255,.18)); }
.orb-core {
  background:
    radial-gradient(circle at 42% 35%, rgba(255,255,255,.42), transparent 18%),
    radial-gradient(circle, rgba(49,230,255,.38) 0%, rgba(124,92,255,.23) 54%, transparent 72%);
  animation: orb-breathe 5s ease-in-out infinite;
}
@keyframes orb-breathe {
  0%,100% { transform: scale(.98); opacity: .86; }
  50% { transform: scale(1.04); opacity: 1; }
}

.hero-stats {
  padding: 1.15rem;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
  backdrop-filter: blur(18px);
}
.stat-number { color: #bafaff; text-shadow: 0 0 24px rgba(49,230,255,.28); }

.services-section,
.ai-section,
.why-section,
.contact-section,
.site-footer { background: transparent; position: relative; z-index: 1; }

.service-card,
.why-card,
.ai-feature-item,
.contact-item,
.contact-right,
.ai-card,
.telecom-node,
.cta-inner {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.085), rgba(255,255,255,0.035));
  border: 1px solid rgba(255,255,255,0.11);
  box-shadow: 0 20px 70px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.service-card::before,
.why-card::before,
.ai-feature-item::before,
.contact-right::before,
.cta-inner::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(49,230,255,.55), rgba(124,92,255,.18), rgba(0,255,163,.38));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.service-card:hover::before,
.why-card:hover::before,
.ai-feature-item:hover::before,
.contact-right:hover::before,
.cta-inner:hover::before { opacity: 1; }

.service-card,
.why-card,
.ai-feature-item,
.telecom-node { transform-style: preserve-3d; will-change: transform; }
.service-card:hover,
.why-card:hover,
.ai-feature-item:hover,
.telecom-node:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: rgba(49,230,255,.32);
  box-shadow: 0 28px 90px rgba(0,0,0,.35), 0 0 40px rgba(49,230,255,.10);
}

.service-icon,
.why-icon,
.ai-feature-icon,
.contact-item-icon {
  background: linear-gradient(135deg, rgba(49,230,255,.18), rgba(124,92,255,.20));
  border: 1px solid rgba(255,255,255,.10);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 14px 36px rgba(49,230,255,.08);
}

.code-line {
  overflow: hidden;
  position: relative;
  background: rgba(49,230,255,.12);
}
.code-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(49,230,255,.55), transparent);
  animation: code-flow 2.4s ease-in-out infinite;
}
@keyframes code-flow {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

.telecom-grid-visual {
  background-image:
    linear-gradient(rgba(49,230,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(49,230,255,.055) 1px, transparent 1px);
  background-size: 28px 28px;
  border-radius: var(--radius-xl);
}
.spec-fill {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-accent2));
  box-shadow: 0 0 18px rgba(49,230,255,.38);
}

input, textarea, select {
  background: rgba(255,255,255,.055) !important;
  border-color: rgba(255,255,255,.12) !important;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
input:focus, textarea:focus, select:focus {
  border-color: rgba(49,230,255,.55) !important;
  box-shadow: 0 0 0 4px rgba(49,230,255,.10), 0 14px 40px rgba(0,0,0,.18);
  transform: translateY(-1px);
}

.mobile-menu {
  background: rgba(5,8,22,.92) !important;
  backdrop-filter: blur(22px);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* =========================================
   APPLE-INSPIRED LIGHT THEME OVERRIDE
   ========================================= */
:root {
  --color-bg: #f5f5f7;
  --color-bg2: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.86);
  --color-surface2: #f2f2f7;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-primary: #0071e3;
  --color-primary-dim: rgba(0, 113, 227, 0.10);
  --color-accent: #34c759;
  --color-accent2: #5856d6;
  --color-gold: #ff9f0a;
  --color-text: #1d1d1f;
  --color-text-mid: #515154;
  --color-text-dim: #86868b;
  --color-white: #ffffff;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 18px 50px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 24px 70px rgba(0, 113, 227, 0.12);
}

body {
  background: #f5f5f7;
  color: var(--color-text);
}

body::after {
  display: none;
}

h1, h2, h3, h4, h5, h6,
.logo-main,
.service-title,
.why-title,
.ai-feature-item h4,
.contact-item-text h4,
.footer-col h4 {
  color: var(--color-text);
  -webkit-text-fill-color: currentColor;
}

.site-header {
  height: 72px;
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: none;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.logo-main {
  background: none;
  font-weight: 800;
}

.logo-sub,
.nav-links a,
.section-subtitle,
.service-desc,
.why-desc,
.cta-desc,
.stat-label,
.ai-feature-text p,
.spec-label,
.contact-item-text p,
.footer-brand p,
.footer-col ul li a {
  color: var(--color-text-mid);
}

.nav-links a:hover,
.footer-col ul li a:hover {
  color: var(--color-primary);
}

.nav-links a::after {
  background: var(--color-primary);
}

.btn-nav,
.btn-primary,
.btn-submit {
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  box-shadow: 0 10px 24px rgba(0, 113, 227, 0.22);
  color: #ffffff;
}

.btn-nav:hover,
.btn-primary:hover,
.btn-submit:hover {
  background: #0077ed;
  box-shadow: 0 14px 30px rgba(0, 113, 227, 0.24);
}

.btn-nav::before,
.btn-primary::before,
.btn-submit::before {
  display: none;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(0, 0, 0, 0.10);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  background: #ffffff;
  border-color: rgba(0, 113, 227, 0.22);
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
}

.hero-bg {
  background:
    radial-gradient(circle at 74% 28%, rgba(0, 113, 227, 0.11), transparent 34rem),
    radial-gradient(circle at 18% 42%, rgba(52, 199, 89, 0.08), transparent 28rem),
    linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
}

.hero-bg::after {
  display: none;
}

.hero-eyebrow,
.label-tag {
  background: rgba(0, 113, 227, 0.08);
  border: 1px solid rgba(0, 113, 227, 0.12);
  box-shadow: none;
  color: var(--color-primary);
}

.label-tag::before {
  box-shadow: none;
}

.hero-title,
.hero-title .accent,
.section-title {
  background: none;
  animation: none;
  color: var(--color-text);
  -webkit-text-fill-color: currentColor;
}

.hero-title .accent,
.section-title {
  color: var(--color-primary);
}

.hero-desc {
  color: var(--color-text-mid);
}

.hero-stats,
.service-card,
.why-card,
.ai-feature-item,
.contact-item,
.contact-right,
.ai-card,
.telecom-node,
.cta-inner {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}

.service-card::before,
.why-card::before,
.ai-feature-item::before,
.contact-right::before,
.cta-inner::before {
  display: none;
}

.service-card:hover,
.why-card:hover,
.ai-feature-item:hover,
.telecom-node:hover,
.contact-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 113, 227, 0.18);
  box-shadow: var(--shadow-md);
}

.service-icon,
.why-icon,
.ai-feature-icon,
.contact-item-icon {
  background: #f5f5f7;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.stat-number {
  color: var(--color-primary);
  text-shadow: none;
}

.services-section,
.ai-section,
.why-section,
.contact-section,
.site-footer {
  background: #f5f5f7;
}

.telecom-grid-visual {
  background-color: #ffffff;
  background-image:
    linear-gradient(rgba(0, 113, 227, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 113, 227, 0.06) 1px, transparent 1px);
}

.spec-fill {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  box-shadow: none;
}

.code-line {
  background: rgba(0, 113, 227, 0.10);
}

.code-line::after {
  background: linear-gradient(90deg, transparent, rgba(0, 113, 227, 0.30), transparent);
}

.contact-right h3 {
  color: var(--color-text) !important;
}

.contact-right > p {
  color: var(--color-text-mid) !important;
}

input,
textarea,
select,
.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(255, 255, 255, 0.92) !important;
  border-color: rgba(0, 0, 0, 0.10) !important;
  color: var(--color-text);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

input:focus,
textarea:focus,
select:focus,
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: rgba(0, 113, 227, 0.55) !important;
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
  transform: none;
}

.mobile-menu {
  background: rgba(255, 255, 255, 0.96) !important;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.10);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}