/* ── Ensar Website — Design System ── */

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

/* ── Tokens ── */
:root {
  /* App-matched palette (dark mode first) */
  --bg:            #0D1117;
  --bg-subtle:     #161B22;
  --surface:       rgba(22, 27, 34, 0.7);
  --surface-solid: #1C2128;
  --surface-elevated: #21262D;
  --stroke:        rgba(255,255,255,0.08);
  --accent:        #59C4B8;
  --accent-soft:   rgba(89,196,184,0.12);
  --accent-glow:   rgba(89,196,184,0.25);
  --gold:          #F5D66A;
  --gold-soft:     rgba(245,214,106,0.10);
  --text-primary:  #F0F4F8;
  --text-secondary:#BDC8D0;
  --text-muted:    #8B949E;
  --shadow:        rgba(0,0,0,0.45);
  --radius:        18px;
  --radius-sm:     12px;
  --radius-xs:     8px;
  --max-width:     1140px;
  --nav-height:    72px;
}

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

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

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

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

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

/* ── Utility ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 48px;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

.accent { color: var(--accent); }
.gold   { color: var(--gold); }

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Ambient Background ── */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.ambient-bg::before {
  content: '';
  position: absolute;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation: ambientDrift 18s ease-in-out infinite alternate;
}

.ambient-bg::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,214,106,0.07) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation: ambientDrift 22s ease-in-out infinite alternate-reverse;
}

@keyframes ambientDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, 40px) scale(1.15); }
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  background: rgba(13,17,23,0.75);
  border-bottom: 1px solid var(--stroke);
  transition: background 0.3s;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #3DA89C);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
  padding: 10px 22px;
  background: var(--accent);
  color: var(--bg) !important;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.88rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
  color: var(--bg) !important;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  padding: 40px 0;
}

.hero-badge {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 14px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-glow);
  color: var(--bg);
}
.btn-primary svg { width: 20px; height: 20px; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--surface);
  color: var(--text-primary);
  border-radius: 14px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--stroke);
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--text-primary);
}

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

.hero-phone {
  max-width: 380px;
  width: 100%;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5));
  animation: phoneFloat 6s ease-in-out infinite;
  border-radius: 32px;
}

@keyframes phoneFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

.hero-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  z-index: -1;
  border-radius: 50%;
  animation: pulseGlow 4s ease-in-out infinite;
}

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

/* ── Feature Cards ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(12px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

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

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(89,196,184,0.25);
  box-shadow: 0 12px 40px var(--shadow);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Privacy Callout ── */
.privacy-callout {
  background: linear-gradient(135deg, rgba(89,196,184,0.08), rgba(245,214,106,0.05));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 60px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
}

.privacy-callout-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
}

.privacy-callout h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.privacy-callout p {
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

/* ── Stats ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.stat-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
}

.stat-value {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ── CTA Section ── */
.cta-section {
  text-align: center;
  padding: 80px 0;
}

.cta-section .section-title { margin-bottom: 16px; }

.cta-section .section-subtitle {
  max-width: 500px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* ── App Store Badge ── */
.app-store-badge-link { display: inline-block; }
.app-store-badge-link img {
  height: 52px;
  transition: transform 0.2s;
}
.app-store-badge-link:hover img {
  transform: scale(1.05);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--stroke);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
  max-width: 280px;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--stroke);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-bottom-links a:hover { color: var(--accent); }

/* ── Page Header (for subpages) ── */
.page-header {
  padding: calc(var(--nav-height) + 60px) 0 48px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 1.05rem;
}

/* ── Legal / Content Pages ── */
.legal-content {
  padding-bottom: 80px;
}

.legal-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.legal-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal-content p,
.legal-content li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-content ul,
.legal-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-content strong {
  color: var(--text-primary);
}

.legal-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 48px;
  backdrop-filter: blur(12px);
  max-width: 820px;
  margin: 0 auto;
}

/* ── FAQ ── */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-sm);
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform 0.3s;
  color: var(--text-muted);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 36px;
  backdrop-filter: blur(12px);
  text-align: center;
  transition: transform 0.3s, border-color 0.3s;
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(89,196,184,0.25);
}

.contact-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin-top: 40px; }
  .hero-phone { max-width: 280px; }

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

  .privacy-callout {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 40px;
  }

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

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

  .footer-links { gap: 32px; }
}

@media (max-width: 640px) {
  .hero-title { font-size: 2.4rem; }
  .section-title { font-size: 1.8rem; }
  .section { padding: 64px 0; }

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

  .stats-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(13,17,23,0.95);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--stroke);
  }

  .legal-card {
    padding: 28px 20px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .privacy-callout {
    padding: 28px 20px;
  }
}

/* ── Animations on scroll ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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