/* ============================================================
   ShellyNet Website — Global Stylesheet
   Glassmorphism Dark Mode — shellynet.com
   ============================================================ */

/* --- Variables --- */
:root {
  --bg-color: #0b0f19;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --purple: #8b5cf6;
  --purple-glow: rgba(139, 92, 246, 0.3);
  --green: #22c55e;
  --green-glow: rgba(34, 197, 94, 0.2);
  --danger: #ef4444;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(30, 58, 138, 0.45) 0%, transparent 35%),
    radial-gradient(circle at 90% 85%, rgba(88, 28, 135, 0.4) 0%, transparent 35%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.6) 0%, transparent 70%);
  background-attachment: fixed;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ============================================================
   GLASS UTILITY
   ============================================================ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.glass-hover {
  transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.glass-hover:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  margin-right: auto;
}

.nav-brand .shell-icon {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.nav-cta {
  margin-left: 16px;
}

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 32px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 8px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 12px;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.page-wrapper {
  padding-top: var(--nav-height);
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
}

.hero-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.hero-logo .shell-icon-large {
  width: 80px;
  height: 80px;
  filter: drop-shadow(0 0 24px var(--accent-glow));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   APP CARDS (Home overview)
   ============================================================ */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.app-card {
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, transparent 60%, rgba(59,130,246,0.05) 100%);
  pointer-events: none;
}

.app-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.app-card-icon.blue  { background: rgba(59, 130, 246, 0.15); }
.app-card-icon.purple { background: rgba(139, 92, 246, 0.15); }
.app-card-icon.green  { background: rgba(34, 197, 94, 0.15); }

.app-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.app-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.app-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.app-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================================================
   FEATURE LIST
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.feature-item {
  border-radius: 14px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-icon {
  font-size: 22px;
  line-height: 1;
}

.feature-item h4 {
  font-size: 15px;
  font-weight: 700;
}

.feature-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   APP DETAIL HERO
   ============================================================ */
.app-hero {
  padding: 100px 0 60px;
}

.app-hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.app-hero-text {
  flex: 1;
  min-width: 280px;
}

.app-hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.app-hero-text h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.app-hero-text p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.app-hero-image {
  flex: 1;
  min-width: 280px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.app-hero-image .placeholder-screenshot {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, rgba(30,58,138,0.3) 0%, rgba(88,28,135,0.2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: rgba(255,255,255,0.15);
}

/* ============================================================
   DOWNLOADS PAGE
   ============================================================ */
.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.download-card {
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.download-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.download-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}

.download-card-title h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 3px;
}

.download-card-title span {
  font-size: 12px;
  color: var(--text-muted);
}

.download-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.download-card-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
}

.download-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.download-btn .dl-meta {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.download-btn:hover .dl-meta {
  color: rgba(255,255,255,0.7);
}

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  padding: 8px 14px;
  border-radius: 8px;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
}

.footer-brand .shell-icon {
  width: 24px;
  height: 24px;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================================
   DIVIDER / MISC
   ============================================================ */
.divider {
  height: 1px;
  background: var(--glass-border);
  margin: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
}

.badge-blue   { background: rgba(59,130,246,0.15); color: #93c5fd; border: 1px solid rgba(59,130,246,0.25); }
.badge-purple { background: rgba(139,92,246,0.15); color: #c4b5fd; border: 1px solid rgba(139,92,246,0.25); }
.badge-green  { background: rgba(34,197,94,0.15);  color: #86efac;  border: 1px solid rgba(34,197,94,0.25); }

/* ============================================================
   BACK LINK
   ============================================================ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 0;
  transition: color 0.2s;
  margin-bottom: 32px;
}

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

/* ============================================================
   LANGUAGE SWITCHER
   ============================================================ */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-right: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 3px 5px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  padding: 4px 7px;
  border-radius: 5px;
  transition: color 0.2s, background 0.2s;
  font-family: inherit;
}

.lang-btn:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.08);
}

.lang-btn.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.1);
}

.lang-divider {
  color: var(--glass-border);
  font-size: 12px;
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  nav { padding: 0 16px; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(11,15,25,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    flex-direction: column;
    padding: 12px 16px 20px;
    gap: 2px;
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 12px; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .hero { padding: 80px 0 60px; }
  section { padding: 60px 0; }
  .container { padding: 0 16px; }

  .app-hero-inner { gap: 32px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}