/* ============================================
   ISHO — Rest First. 
   Company Website Design System
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand Colors */
  --blue-50: #eef6ff;
  --blue-100: #d9eaff;
  --blue-200: #bcdbff;
  --blue-300: #8ec5ff;
  --blue-400: #59a5ff;
  --blue-500: #3381f5;
  --blue-600: #1d63ea;
  --blue-700: #154fd7;
  --blue-800: #1740ae;
  --blue-900: #193a89;
  --blue-950: #0f2254;

  /* Neutral Palette */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --gray-950: #020617;

  /* Semantic */
  --bg-primary: #030a1a;
  --bg-secondary: #0a1628;
  --bg-card: rgba(15, 34, 64, 0.5);
  --bg-card-hover: rgba(25, 58, 110, 0.4);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-medium: rgba(148, 163, 184, 0.2);

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #3381f5 0%, #59a5ff 50%, #8ec5ff 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(51, 129, 245, 0.06), transparent 40%);
  --gradient-card: linear-gradient(135deg, rgba(51, 129, 245, 0.08) 0%, rgba(15, 34, 84, 0.3) 100%);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-glow: 0 0 40px rgba(51, 129, 245, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-weight: var(--font-weight-regular);
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) 0;
  transition: all var(--transition-base);
  background: transparent;
}

.nav.scrolled {
  padding: var(--space-md) 0;
  background: rgba(3, 10, 26, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
  letter-spacing: 0.05em;
  color: var(--text-primary);
  user-select: none;
}

.nav-links {
  display: flex;
  gap: var(--space-2xl);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-image-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--bg-primary);
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.1);
  animation: heroImageZoom 20s ease-in-out infinite alternate;
}

@keyframes heroImageZoom {
  0% { transform: scale(1.1); }
  100% { transform: scale(1.18); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(135deg, rgba(3, 10, 26, 0.72) 0%, rgba(3, 10, 26, 0.45) 50%, rgba(3, 10, 26, 0.2) 80%),
    linear-gradient(to bottom, rgba(3, 10, 26, 0.15) 0%, transparent 35%, transparent 70%, var(--bg-primary) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 var(--space-xl);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(51, 129, 245, 0.12);
  border: 1px solid rgba(51, 129, 245, 0.25);
  border-radius: var(--radius-full);
  padding: 0.4rem 1.2rem;
  font-size: 0.8rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.06em;
  color: var(--blue-300);
  margin-bottom: var(--space-2xl);
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards 0.2s;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--blue-400);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(89, 165, 255, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(89, 165, 255, 0); }
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: var(--font-weight-black);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xl);
}

.title-line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: fadeInUp 0.8s ease forwards;
}

.title-line:nth-child(1) {
  animation-delay: 0.4s;
}

.title-line:nth-child(2) {
  animation-delay: 0.6s;
}

.title-dot {
  color: var(--blue-400);
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  font-weight: var(--font-weight-light);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: var(--space-2xl);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards 0.8s;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards 1s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll Indicator */
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s ease forwards 1.4s;
  z-index: 1;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--blue-400), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 2rem;
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-sans);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: 0 4px 20px rgba(51, 129, 245, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(51, 129, 245, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--blue-400);
  background: rgba(51, 129, 245, 0.06);
}

/* ---------- Sections ---------- */
.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-400);
  margin-bottom: var(--space-lg);
  background: rgba(51, 129, 245, 0.1);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(51, 129, 245, 0.2);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 640px;
  margin: 0 auto;
  font-weight: var(--font-weight-light);
}

/* ---------- About / Stats ---------- */
.section-about {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
  max-width: 800px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(51, 129, 245, 0.3);
  transform: translateY(-4px);
}

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

.stat-number {
  font-size: 3rem;
  font-weight: var(--font-weight-black);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline;
  line-height: 1;
}

.stat-unit {
  font-size: 1.2rem;
  font-weight: var(--font-weight-bold);
  color: var(--blue-300);
  display: inline;
  margin-left: 2px;
}

.stat-label {
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
}

/* ---------- Features ---------- */
.section-features {
  background: var(--bg-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  padding: var(--space-2xl);
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.feature-card:hover {
  border-color: rgba(51, 129, 245, 0.25);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::after {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-xl);
  color: var(--blue-400);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: var(--font-weight-light);
}

/* ---------- Vision ---------- */
.section-vision {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
  padding: var(--space-5xl) 0;
}

.vision-content {
  max-width: 700px;
  margin: 0 auto;
}

.vision-title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: var(--space-2xl);
}

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

.vision-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 2;
  font-weight: var(--font-weight-light);
  margin-bottom: var(--space-3xl);
}

.vision-signature {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-md);
  font-size: 1.8rem;
  font-style: italic;
  font-weight: var(--font-weight-bold);
}

.sig-brand {
  color: var(--text-primary);
}

.sig-slogan {
  color: var(--blue-400);
}

/* ---------- Contact ---------- */
.section-contact {
  background: var(--bg-primary);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.contact-info .section-tag {
  margin-bottom: var(--space-md);
}

.contact-info .section-title {
  text-align: left;
  margin-bottom: var(--space-md);
}

.contact-info .section-desc {
  text-align: left;
  margin: 0 0 var(--space-2xl) 0;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.contact-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(51, 129, 245, 0.1);
  border: 1px solid rgba(51, 129, 245, 0.2);
  border-radius: var(--radius-md);
  color: var(--blue-400);
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2px;
}

.contact-value {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.contact-value:hover {
  color: var(--blue-400);
}

/* Contact Card */
.contact-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.contact-card-glow {
  position: absolute;
  inset: -1px;
  background: var(--gradient-brand);
  border-radius: var(--radius-xl);
  opacity: 0.3;
  filter: blur(0);
  transition: opacity var(--transition-base);
}

.contact-card:hover .contact-card-glow {
  opacity: 0.5;
}

.contact-card-content {
  position: relative;
  background: var(--bg-secondary);
  margin: 1px;
  border-radius: calc(var(--radius-xl) - 1px);
  padding: var(--space-3xl);
  text-align: center;
}

.card-logo {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.card-tagline {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--blue-400);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xl);
}

.card-divider {
  width: 48px;
  height: 2px;
  background: var(--gradient-brand);
  margin: 0 auto var(--space-xl);
  border-radius: var(--radius-full);
}

.card-text {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--space-sm);
}

.card-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-xl);
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: var(--font-weight-black);
  letter-spacing: 0.05em;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 2px;
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--blue-400);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 100%;
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

/* ---------- Animations ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-wrap {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(3, 10, 26, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    z-index: 999;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links .nav-link {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
    z-index: 1000;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-title {
    font-size: clamp(2.2rem, 8vw, 3.5rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: var(--space-4xl) 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .hero-scroll {
    display: none;
  }

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

  .vision-signature {
    font-size: 1.4rem;
  }

  .contact-info .section-title,
  .contact-info .section-desc {
    text-align: center;
  }

  .contact-item {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .stat-card {
    padding: var(--space-lg) var(--space-md);
  }

  .feature-card {
    padding: var(--space-xl);
  }
}