/* ============================================================
   TROIX.IN — Main Stylesheet
   Author: Troix Web Team
   Description: Core styles, variables, utilities, components
   ============================================================ */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,300&display=swap');

/* ─── CSS Variables ─── */
:root {
  /* Colors */
  --clr-bg: #05070f;
  --clr-bg-2: #0b0e1a;
  --clr-bg-3: #111420;
  --clr-surface: rgba(255,255,255,0.04);
  --clr-surface-hover: rgba(255,255,255,0.07);
  --clr-border: rgba(255,255,255,0.08);
  --clr-border-active: rgba(99,179,237,0.35);

  --clr-primary: #3b82f6;
  --clr-primary-light: #60a5fa;
  --clr-primary-dark: #1d4ed8;
  --clr-accent: #06b6d4;
  --clr-accent-2: #8b5cf6;
  --clr-success: #10b981;

  --clr-text: #e2e8f0;
  --clr-text-muted: #94a3b8;
  --clr-text-faint: #475569;
  --clr-heading: #f1f5f9;
  --clr-white: #ffffff;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --grad-accent: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
  --grad-hero: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.18) 0%, transparent 70%);
  --grad-card: linear-gradient(145deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
  --grad-text: linear-gradient(135deg, #60a5fa 0%, #06b6d4 50%, #8b5cf6 100%);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-primary: 0 8px 32px rgba(59,130,246,0.3);
  --shadow-accent: 0 8px 32px rgba(6,182,212,0.25);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.34,1.56,0.64,1);

  /* Layout */
  --container-max: 1200px;
  --navbar-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── Page Load Animation ─── */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--clr-bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.page-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: loaderPulse 1.2s ease-in-out infinite;
}
@keyframes loaderPulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.97); }
}

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

/* ─── Section Defaults ─── */
.section {
  padding-block: var(--space-3xl);
}
.section--alt { background: var(--clr-bg-2); }
.section--dark { background: var(--clr-bg-3); }

.section__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-primary-light);
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}
.section__label::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--clr-primary);
  border-radius: 50%;
  animation: labelDot 2s ease infinite;
}
@keyframes labelDot {
  0%,100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--clr-heading);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.section__title .highlight {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__subtitle {
  font-size: 1.0625rem;
  color: var(--clr-text-muted);
  max-width: 560px;
  line-height: 1.8;
}
.section__header {
  margin-bottom: var(--space-2xl);
}
.section__header--center {
  text-align: center;
}
.section__header--center .section__subtitle { margin-inline: auto; }
.section__header--center .section__label { margin-inline: auto; }

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  display: flex;
  align-items: center;
  transition: background 0.4s ease, box-shadow 0.4s ease, height 0.3s ease;
}
.navbar.scrolled {
  background: rgba(5,7,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06), var(--shadow-md);
  height: 60px;
}
.navbar__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.navbar__logo {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  letter-spacing: -0.02em;
}
.navbar__logo span {
  -webkit-text-fill-color: var(--clr-text-muted);
  font-weight: 400;
  font-size: 0.75rem;
  vertical-align: super;
  margin-left: 1px;
  font-family: var(--font-body);
}
.navbar__nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.navbar__nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background var(--transition-base);
  position: relative;
}
.navbar__nav a:hover,
.navbar__nav a.active {
  color: var(--clr-white);
  background: var(--clr-surface);
}
.navbar__nav a.active::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  background: var(--clr-primary);
  border-radius: 50%;
}
.navbar__cta {
  margin-left: 1rem;
  flex-shrink: 0;
}
.navbar__hamburger {
  display: none;
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-base);
}
.navbar__hamburger:hover { background: var(--clr-surface); }
.navbar__hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}
.navbar__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.navbar__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.navbar__mobile {
  display: none;
  position: fixed;
  top: var(--navbar-h);
  left: 0; right: 0;
  background: rgba(5,7,15,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--clr-border);
  padding: 1.5rem;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 999;
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.navbar__mobile.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}
.navbar__mobile a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  transition: color var(--transition-base), background var(--transition-base);
}
.navbar__mobile a:hover,
.navbar__mobile a.active {
  color: var(--clr-white);
  background: var(--clr-surface);
}
.navbar__mobile .btn { margin-top: 0.5rem; text-align: center; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::after { opacity: 0.06; }
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn--primary:hover {
  box-shadow: 0 12px 40px rgba(59,130,246,0.45);
  transform: translateY(-2px);
}

.btn--outline {
  border: 1px solid var(--clr-border-active);
  color: var(--clr-primary-light);
  background: rgba(59,130,246,0.06);
}
.btn--outline:hover {
  background: rgba(59,130,246,0.12);
  border-color: rgba(99,179,237,0.5);
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}
.btn--ghost:hover {
  color: var(--clr-text);
  border-color: rgba(255,255,255,0.15);
  background: var(--clr-surface);
}

.btn--sm {
  font-size: 0.825rem;
  padding: 0.5625rem 1.375rem;
}
.btn--lg {
  font-size: 1rem;
  padding: 1rem 2.25rem;
}
.btn-icon {
  width: 18px; height: 18px;
  transition: transform var(--transition-base);
}
.btn:hover .btn-icon { transform: translateX(4px); }

/* ─── Cards ─── */
.card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--clr-border-active);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(59,130,246,0.1);
}

/* ─── Icon Box ─── */
.icon-box {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  position: relative;
  flex-shrink: 0;
}
.icon-box--primary {
  background: rgba(59,130,246,0.12);
  color: var(--clr-primary-light);
}
.icon-box--accent {
  background: rgba(6,182,212,0.12);
  color: var(--clr-accent);
}
.icon-box--purple {
  background: rgba(139,92,246,0.12);
  color: #a78bfa;
}
.icon-box--success {
  background: rgba(16,185,129,0.12);
  color: var(--clr-success);
}

/* ─── Grid Layouts ─── */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-md); }

/* ─── Scroll Animations ─── */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease;
}
.fade-in.visible { opacity: 1; }

.slide-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.slide-left.visible { opacity: 1; transform: translateX(0); }

.slide-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.slide-right.visible { opacity: 1; transform: translateX(0); }

/* Staggered children */
.stagger > * { transition-delay: calc(var(--i, 0) * 0.1s); }

/* ─── Footer ─── */
.footer {
  background: var(--clr-bg-3);
  border-top: 1px solid var(--clr-border);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-lg);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}
.footer__brand p {
  color: var(--clr-text-muted);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-top: 1rem;
  max-width: 280px;
}
.footer__socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.footer__social-link {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--clr-text-muted);
  transition: all var(--transition-base);
}
.footer__social-link:hover {
  background: rgba(59,130,246,0.12);
  border-color: rgba(59,130,246,0.3);
  color: var(--clr-primary-light);
  transform: translateY(-3px);
}
.footer__col h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--clr-heading);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.footer__links a {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  transition: color var(--transition-base), transform var(--transition-base);
  display: inline-block;
}
.footer__links a:hover {
  color: var(--clr-primary-light);
  transform: translateX(4px);
}
.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.875rem;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
}
.footer__contact-item span:first-child {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--clr-border);
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__bottom p { font-size: 0.85rem; color: var(--clr-text-faint); }
.footer__bottom-links {
  display: flex;
  gap: 1.5rem;
}
.footer__bottom-links a {
  font-size: 0.85rem;
  color: var(--clr-text-faint);
  transition: color var(--transition-base);
}
.footer__bottom-links a:hover { color: var(--clr-text-muted); }

/* ─── Tag/Badge ─── */
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(59,130,246,0.1);
  color: var(--clr-primary-light);
  border: 1px solid rgba(59,130,246,0.2);
}

/* ─── Divider ─── */
.divider {
  width: 60px; height: 3px;
  background: var(--grad-primary);
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

/* ─── Background Decorations ─── */
.bg-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.bg-dots {
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ─── Glow Orbs ─── */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}
.orb--blue { background: #3b82f6; }
.orb--cyan { background: #06b6d4; }
.orb--purple { background: #8b5cf6; }

/* ─── CTA Section ─── */
.cta-section {
  padding-block: var(--space-3xl);
  position: relative;
  overflow: hidden;
}
.cta-section__inner {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section__inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.5), transparent);
}
.cta-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--clr-heading);
  margin-bottom: 1rem;
}
.cta-section__text {
  color: var(--clr-text-muted);
  font-size: 1.0625rem;
  max-width: 520px;
  margin: 0 auto 2.25rem;
  line-height: 1.8;
}
.cta-section__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Page Hero Banner ─── */
.page-hero {
  padding-top: calc(var(--navbar-h) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
  text-align: center;
  background: var(--grad-hero);
}
.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--clr-heading);
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.page-hero__title .highlight {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero__sub {
  font-size: 1.125rem;
  color: var(--clr-text-muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.8;
}
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--clr-text-faint);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--clr-primary-light); }
.breadcrumb span { color: var(--clr-text-faint); }

/* ─── Utilities ─── */
.text-gradient {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align: center; }
.text-muted { color: var(--clr-text-muted); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.w-full { width: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}
@media (max-width: 768px) {
  :root { --space-3xl: 5rem; --space-2xl: 4rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .navbar__nav, .navbar__cta { display: none; }
  .navbar__hamburger { display: flex; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .cta-section__actions { flex-direction: column; align-items: center; }
}