/* === YAN HORIZON INC - Master Stylesheet === */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-deep: #060b14;
  --bg-primary: #0a101f;
  --bg-secondary: #0f1729;
  --bg-card: #141c2e;
  --bg-card-hover: #1a2340;
  --bg-elevated: #1a2540;
  --border-subtle: #1e2a44;
  --border-default: #253452;
  --border-accent: #2d4a8a;

  --text-primary: #edf2f9;
  --text-secondary: #9ba9c0;
  --text-muted: #5e6d85;
  --text-inverse: #060b14;

  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #1d4ed8;
  --accent-glow: rgba(59, 130, 246, 0.25);

  --teal: #14b8a6;
  --teal-light: #2dd4bf;
  --indigo: #6366f1;
  --amber: #f59e0b;
  --rose: #f43f5e;
  --emerald: #10b981;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px var(--accent-glow);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59, 130, 246, 0.06), transparent),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(20, 184, 166, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

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

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }

strong { color: var(--text-primary); font-weight: 600; }

/* === UTILITY CLASSES === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.container--narrow {
  max-width: 860px;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-light);
  margin-bottom: 0.75rem;
}

.section__title {
  margin-bottom: 1rem;
}

.section__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 3rem;
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 16, 31, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav__logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--indigo));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav__links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
  text-decoration: none;
}

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

.nav__cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  transition: box-shadow 0.3s ease, transform 0.2s ease !important;
}

.nav__cta:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 42, 68, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 42, 68, 0.15) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, black 30%, transparent 70%);
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.5;
  pointer-events: none;
}

.hero__orb--blue {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: -200px;
  right: -150px;
  opacity: 0.12;
}

.hero__orb--teal {
  width: 400px;
  height: 400px;
  background: var(--teal);
  bottom: -150px;
  left: -100px;
  opacity: 0.08;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 1.5rem;
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--emerald);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.hero__title span {
  background: linear-gradient(135deg, var(--accent-light), var(--teal-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

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

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.45);
  transform: translateY(-2px);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-2px);
}

/* === STATS BAR === */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stat__number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 0.3rem;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

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

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--teal));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

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

.service-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
  background: var(--bg-elevated);
}

.service-card__icon--blue { background: rgba(59, 130, 246, 0.12); color: var(--accent-light); }
.service-card__icon--teal { background: rgba(20, 184, 166, 0.12); color: var(--teal-light); }
.service-card__icon--indigo { background: rgba(99, 102, 241, 0.12); color: var(--indigo); }

.service-card__title {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

/* === PROCESS STEPS === */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.process::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--teal));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step__number {
  width: 56px;
  height: 56px;
  background: var(--bg-card);
  border: 2px solid var(--border-default);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--accent-light);
  transition: all 0.3s ease;
}

.process-step:hover .process-step__number {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.process-step__title {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.process-step__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* === TECH STACK === */
.tech-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 0;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.tech-item:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.tech-item__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.tech-item__dot--blue { background: var(--accent); }
.tech-item__dot--teal { background: var(--teal); }
.tech-item__dot--indigo { background: var(--indigo); }
.tech-item__dot--amber { background: var(--amber); }
.tech-item__dot--rose { background: var(--rose); }

/* === FEATURE GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem 2rem 1.25rem;
  display: flex;
  gap: 1rem;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.feature-card__bar {
  width: 4px;
  min-width: 4px;
  border-radius: 4px;
}

.feature-card__bar--blue { background: linear-gradient(180deg, var(--accent), var(--accent-dark)); }
.feature-card__bar--teal { background: linear-gradient(180deg, var(--teal), #0d9488); }
.feature-card__bar--indigo { background: linear-gradient(180deg, var(--indigo), #4f46e5); }
.feature-card__bar--amber { background: linear-gradient(180deg, var(--amber), #d97706); }

.feature-card__content h4 {
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

.feature-card__content p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

/* === CTA SECTION === */
.cta-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
}

.cta-section h2 {
  margin-bottom: 0.75rem;
}

.cta-section p {
  max-width: 560px;
  margin: 0 auto 1.5rem;
}

/* === FOOTER === */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
}

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

.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 280px;
  margin-top: 1rem;
}

.footer__col-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.6rem;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === PAGE HEADER (for subpages) === */
.page-header {
  padding: 8rem 0 4rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, var(--accent-glow), transparent);
  opacity: 0.5;
  pointer-events: none;
}

.page-header__title {
  position: relative;
  z-index: 1;
}

.page-header__subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

/* === CONTENT PAGE STYLES === */
.content-page {
  padding: 4rem 0 5rem;
}

.content-block {
  margin-bottom: 3rem;
}

.content-block h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.content-block h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  color: var(--text-primary);
}

.content-block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.75;
}

.content-block ul,
.content-block ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.content-block li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.content-highlight {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.content-highlight p {
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

.content-highlight strong {
  color: var(--accent-light);
}

/* === 404 PAGE === */
.not-found-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.not-found__code {
  font-family: var(--font-mono);
  font-size: clamp(6rem, 15vw, 12rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent-light), var(--teal-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 1rem;
}

.not-found__title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.not-found__desc {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}

/* === RESPONSIVE === */
@media (max-width: 968px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process::before { display: none; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .hero__actions { flex-direction: column; }
  .services-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .tech-strip { gap: 1rem; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .section { padding: 4rem 0; }
}