/* ═══════════════════════════════════════════════════════════════
   JTA APPS — Professional Landing Page
   Minimalistic, Premium, World-class Design
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Premium Dark Palette */
  --bg: #0A0913;
  --surface: #1A1436;
  --border: #2D2447;
  --text: #F5F5F5;
  --text-dim: #B4B4B4;
  --accent: #8B5CF6;
  --accent-light: #A78BFA;
  --success: #34D399;
  --error: #FB7185;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

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

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

/* ─── Layout ─── */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Header ─── */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 9, 19, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(141, 92, 246, 0.08);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.logo svg {
  color: var(--accent);
  width: 24px;
  height: 24px;
}

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

.nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

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

/* ─── Hero ─── */

.hero {
  padding: 120px 0 80px;
  text-align: center;
}

.hero-content h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-dim) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ─── Section Titles ─── */

.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 48px;
  text-align: center;
  color: var(--text);
}

/* ─── Apps Grid ─── */

.apps {
  padding: 80px 0;
  border-top: 1px solid rgba(141, 92, 246, 0.08);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 32px;
}

.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.app-card:hover {
  border-color: rgba(141, 92, 246, 0.3);
  background: rgba(26, 20, 54, 0.8);
}

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

.app-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(141, 92, 246, 0.1);
  border: 1px solid rgba(141, 92, 246, 0.2);
  border-radius: 12px;
  color: var(--accent);
}

.app-icon svg {
  width: 32px;
  height: 32px;
}

.app-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.app-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  flex-grow: 1;
}

.app-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature {
  font-size: 12px;
  padding: 4px 10px;
  background: rgba(141, 92, 246, 0.08);
  border: 1px solid rgba(141, 92, 246, 0.15);
  border-radius: 6px;
  color: var(--accent-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.app-cta {
  display: inline-block;
  padding: 12px 20px;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  letter-spacing: 0.05em;
}

.app-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}

.placeholder {
  opacity: 0.6;
}

.placeholder-icon {
  color: var(--text-dim);
  background: rgba(180, 180, 180, 0.05);
  border-color: rgba(180, 180, 180, 0.1);
}

.placeholder-cta {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  cursor: not-allowed;
  font-size: 13px;
}

.placeholder-cta:hover {
  background: transparent;
  transform: none;
}

/* ─── About Section ─── */

.about {
  padding: 80px 0;
  border-top: 1px solid rgba(141, 92, 246, 0.08);
  background: rgba(26, 20, 54, 0.4);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 48px;
  margin-top: 48px;
}

.about-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-icon {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(141, 92, 246, 0.1);
  border-radius: 12px;
}

.about-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.about-item p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ─── Footer ─── */

.footer {
  border-top: 1px solid rgba(141, 92, 246, 0.08);
  padding: 48px 0;
  background: rgba(10, 9, 19, 0.4);
  margin-top: 80px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-left p {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.footer-right {
  display: flex;
  gap: 32px;
}

.footer-link {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--accent);
}

/* ─── Responsive ─── */

@media (max-width: 768px) {
  .header .container {
    gap: 16px;
  }

  .nav {
    gap: 16px;
  }

  .nav-link {
    font-size: 12px;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .hero-content h1 {
    font-size: 32px;
  }

  .hero-content p {
    font-size: 15px;
  }

  .section-title {
    font-size: 24px;
    margin-bottom: 32px;
  }

  .apps {
    padding: 60px 0;
  }

  .apps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .app-card {
    padding: 32px;
  }

  .about {
    padding: 60px 0;
  }

  .about-grid {
    gap: 32px;
  }

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

  .footer-right {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .header {
    padding: 12px 0;
  }

  .logo {
    font-size: 16px;
    gap: 8px;
  }

  .nav {
    gap: 12px;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

  .hero-content p {
    font-size: 14px;
  }

  .app-card {
    padding: 24px;
  }

  .app-name {
    font-size: 18px;
  }

  .app-desc {
    font-size: 13px;
  }
}

/* ══════════ hero CTA ══════════ */
.hero-cta {
  display: inline-block; margin-top: 28px; padding: 14px 34px;
  background: linear-gradient(90deg, #8B5CF6, #EC4899);
  color: #fff; text-decoration: none; font-weight: 700; font-size: 15px;
  letter-spacing: 0.06em; border-radius: 10px; transition: filter .2s, transform .2s;
}
.hero-cta:hover { filter: brightness(1.1); transform: translateY(-2px); }

/* ══════════ mentor sell ══════════ */
.mentor-sell { padding: 96px 0; border-top: 1px solid var(--border); background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,0.10), transparent 60%); }
.sell-eyebrow { text-align: center; font-size: 12px; letter-spacing: 0.22em; color: var(--accent-light); font-weight: 700; }
.sell-title { text-align: center; font-size: clamp(30px, 4.5vw, 44px); font-weight: 800; margin-top: 14px; }
.sell-sub { text-align: center; max-width: 640px; margin: 18px auto 0; color: var(--text-dim); font-size: 16px; line-height: 1.75; }

.sell-grid { margin-top: 56px; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.sell-item { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 26px; transition: border-color .2s, transform .2s; }
.sell-item:hover { border-color: var(--accent); transform: translateY(-3px); }
.sell-icon { font-size: 24px; }
.sell-item h3 { margin-top: 12px; font-size: 16.5px; font-weight: 700; }
.sell-item p { margin-top: 8px; color: var(--text-dim); font-size: 14px; line-height: 1.7; }

.sell-pricing { margin-top: 72px; text-align: center; }
.sell-pricing-title { font-size: 26px; font-weight: 800; }
.price-row { margin-top: 30px; display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.price-card {
  position: relative; display: flex; flex-direction: column; gap: 8px; min-width: 190px;
  padding: 28px 32px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; text-decoration: none; color: var(--text); transition: border-color .2s, transform .2s;
}
.price-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 40px rgba(139,92,246,0.25); }
.price-badge {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(90deg, #8B5CF6, #EC4899); color: #fff;
  font-size: 10px; font-weight: 800; letter-spacing: 0.12em; padding: 4px 12px; border-radius: 99px; white-space: nowrap;
}
.price-name { font-size: 11px; letter-spacing: 0.18em; color: var(--text-dim); font-weight: 700; }
.price-credits { font-size: 28px; font-weight: 800; color: var(--accent-light); }
.price-rs { font-size: 14px; color: var(--text-dim); }
.sell-note { margin-top: 26px; color: var(--text-dim); font-size: 13px; }
.sell-cta {
  display: inline-block; margin-top: 22px; padding: 16px 44px;
  background: linear-gradient(90deg, #8B5CF6, #EC4899); color: #fff; text-decoration: none;
  font-weight: 800; font-size: 16px; letter-spacing: 0.05em; border-radius: 12px; transition: filter .2s, transform .2s;
}
.sell-cta:hover { filter: brightness(1.1); transform: translateY(-2px); }