/* ==========================================================================
   TIBU Digital Services - Enterprise UI System
   Inspired by Stripe, Linear, Vercel
   ========================================================================== */

:root {
  color-scheme: dark;

  /* Core Colors */
  --bg-dark: #020617; /* Tailwind slate-950 */
  --bg-panel: #0f172a; /* Tailwind slate-900 */
  --bg-surface: #1e293b; /* Tailwind slate-800 */

  /* Accents */
  --primary: #38bdf8; /* Tailwind light blue */
  --primary-hover: #0ea5e9;
  --cyan: #22d3ee;

  /* Text */
  --text-primary: #f8fafc; /* Tailwind slate-50 */
  --text-secondary: #94a3b8; /* Tailwind slate-400 */
  --text-muted: #64748b; /* Tailwind slate-500 */

  /* Borders & Effects */
  --border-light: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);

  /* Accessibility */
  --focus-ring: 0 0 0 3px rgba(56, 189, 248, 0.5);

  /* Layout */
  --container-width: 1200px;
  --section-spacing: 140px;
}

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

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

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle background grid pattern for depth */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, transparent 80%);
  pointer-events: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Inter', sans-serif;
  color: var(--text-primary);
  line-height: 1.15;
}

h1 {
  font-size: clamp(48px, 7vw, 84px);
  font-weight: 800;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 20px;
  font-weight: 600;
}

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

.lead {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--text-secondary);
  line-height: 1.6;
}

.text-gradient {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-cyan {
  color: var(--cyan);
}

.eyebrow {
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  font-family: 'Inter', sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */
a:focus-visible,
button:focus-visible,
details summary:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 6px;
}

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

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  width: min(var(--container-width), 100% - 48px);
  margin: 0 auto;
}

.section {
  padding: var(--section-spacing) 0;
  position: relative;
  contain: content;
}

/* Creating visual breaks between sections */
.bg-light-panel {
  background-color: var(--bg-panel);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-spaced {
  margin-top: 40px;
  margin-bottom: 40px;
}

.section-header {
  margin-bottom: 64px;
  max-width: 640px;
}

.section-header.center {
  margin: 0 auto 64px;
  text-align: center;
  max-width: 760px;
}

.section-desc {
  margin-top: 24px;
  font-size: 20px;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Cards */
.card-glass {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 8px; /* Linear style sharp corners */
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-dark);
  padding: 12px 24px;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  padding: 12px 24px;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  color: #fff;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.w-full {
  width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all 0.3s ease;
  padding: 24px 0;
}

.site-header.is-scrolled {
  padding: 16px 0;
  background: rgba(2, 6, 23, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-light);
}

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

.logo img {
  height: 28px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a:hover, .nav-links a.active-link {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.social-icon:hover {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.glow-bg {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1000px;
  height: 1000px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 32px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--cyan);
  animation: pulse 2.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.6; }
  100% { transform: scale(0.95); opacity: 1; }
}

.hero-content h1 {
  margin-bottom: 24px;
}

.hero-content .lead {
  margin-bottom: 48px;
  max-width: 580px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-trust p {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.trust-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.trust-tags span {
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: var(--text-secondary);
}

/* Client-facing hero panel */
.growth-panel {
  background: var(--bg-dark);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(56, 189, 248, 0.05);
  overflow: hidden;
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.growth-panel:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.window-header {
  background: var(--bg-panel);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border-light);
}

.dots {
  display: flex;
  gap: 8px;
}

.dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.5;
}

.window-header span {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}

.readiness-content {
  padding: 28px;
}

.readiness-score {
  border: 1px solid var(--border-light);
  border-radius: 12px;
  background:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.14), transparent 18rem),
    rgba(15, 23, 42, 0.58);
  padding: 22px;
}

.readiness-score span {
  display: block;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.readiness-score strong {
  display: block;
  color: var(--text-primary);
  font-family: 'Outfit', 'Inter', sans-serif;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
}

.readiness-score p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 15px;
}

.readiness-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.readiness-list div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.52);
  padding: 14px;
}

.readiness-list .material-symbols-rounded {
  grid-row: span 2;
  color: var(--cyan);
  font-size: 24px;
}

.readiness-list strong {
  color: var(--text-primary);
  font-size: 15px;
}

.readiness-list small {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

/* ==========================================================================
   GEO About Grid
   ========================================================================== */
.geo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.geo-card {
  background: transparent;
  border-top: 1px solid var(--border-light);
  padding: 32px 0;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.geo-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}

.geo-text h4 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.geo-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

/* ==========================================================================
   Expertise Grid
   ========================================================================== */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.expertise-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 32px 24px;
  transition: all 0.3s ease;
}

.expertise-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
  background: #253348;
}

.icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary);
}

.expertise-card h4 {
  font-size: 18px;
  margin-bottom: 12px;
}

.expertise-card p {
  font-size: 15px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Solutions Grid
   ========================================================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.solution-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 48px;
  transition: all 0.3s ease;
}

.solution-item:hover {
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.05);
}

.solution-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.solution-header .material-symbols-rounded {
  font-size: 32px;
  color: var(--cyan);
}

.solution-header h4 {
  font-size: 24px;
  margin: 0;
}

.solution-item > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 16px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
}

.feature-list .material-symbols-rounded {
  color: var(--primary);
  font-size: 20px;
}

/* ==========================================================================
   Benefits Section
   ========================================================================== */
.benefits-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.benefit-points {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.b-point {
  display: flex;
  gap: 24px;
}

.b-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.b-icon .material-symbols-rounded {
  color: var(--cyan);
}

.b-content h5 {
  font-size: 18px;
  margin-bottom: 8px;
}

.b-content p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* Dashboard Mockup */
.dashboard-mockup {
  background: var(--bg-dark);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.dash-top {
  background: var(--bg-panel);
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dash-top div {
  display: flex;
  gap: 8px;
}

.dash-top span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.5;
}

.dash-top p {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-light);
}

.d-box {
  background: var(--bg-dark);
  padding: 32px 24px;
}

.d-box p {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.d-box strong {
  font-size: 32px;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-item summary {
  padding: 24px 32px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .material-symbols-rounded {
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}

.faq-item[open] summary .material-symbols-rounded {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-content {
  padding: 0 32px 32px 32px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

/* ==========================================================================
   Contact & Social Section
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
}

.cta-box, .social-box {
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.glow-orb {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: var(--primary);
  filter: blur(100px);
  opacity: 0.1;
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.cta-content, .social-content {
  position: relative;
  z-index: 1;
}

.cta-box h2 {
  font-size: clamp(32px, 4vw, 48px);
  margin-bottom: 24px;
}

.cta-box p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 48px;
  max-width: 500px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
}

.social-box {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-panel) 100%);
  text-align: center;
  align-items: center;
}

.social-icon-large {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 32px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.social-box h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

.social-box p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-light);
  padding-top: 38px;
  background:
    linear-gradient(180deg, rgba(4, 12, 24, 0.88), var(--bg-dark) 62%),
    var(--bg-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1.45fr) minmax(320px, 1fr);
  gap: 36px;
  align-items: start;
  margin-bottom: 34px;
}

.footer-logo {
  height: 24px;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-secondary);
  max-width: 360px;
  margin-bottom: 18px;
  font-size: 14px;
  line-height: 1.65;
}

.social-links {
  display: flex;
  gap: 10px;
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--bg-panel);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  transition: all 0.2s ease;
}

.social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-col h4 {
  font-size: 13px;
  margin-bottom: 14px;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  margin-bottom: 9px;
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: 18px 0 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-legal {
  display: flex;
  gap: 18px;
}

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

/* ==========================================================================
   Animations
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--delay, 0s);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-container, .benefits-wrapper, .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .growth-panel {
    transform: none;
    max-width: 600px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: auto;
  }
}

@media (max-width: 768px) {
  :root {
    --section-spacing: 80px;
  }

  .nav-links, .nav-actions .btn {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .solutions-grid, .geo-grid {
    grid-template-columns: 1fr;
  }

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

  .cta-buttons {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
  }

  .site-footer {
    padding-top: 30px;
  }

  .footer-nav {
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    padding: 16px 0 18px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .cta-box, .social-box {
    padding: 40px 24px;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 24px;
    right: 24px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 24px;
    z-index: 100;
  }
}