/* GiftSignal — Design System */

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

:root {
  --bg-deep: #0F0E13;
  --bg-card: #1A1820;
  --bg-card-hover: #222029;
  --coral: #E8735A;
  --coral-light: #F09A86;
  --amber: #E8B44D;
  --sage: #7EC9A0;
  --lavender: #A78BDB;
  --text-primary: #F2EDE8;
  --text-secondary: #9B958E;
  --text-muted: #6B665F;
  --border: #2A2730;
  --radius: 12px;
  --radius-sm: 8px;
}

body {
  font-family: 'DM Sans', -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--coral); text-decoration: none; }
a:hover { color: var(--coral-light); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 14, 19, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.1rem;
  color: var(--text-primary);
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 16px;
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-link-cta {
  background: var(--coral); color: #fff;
}
.nav-link-cta:hover { background: var(--coral-light); color: #fff; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem; font-weight: 600;
  border-radius: var(--radius);
  border: none; cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.btn-primary { background: var(--coral); color: #fff; }
.btn-primary:hover { background: var(--coral-light); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--text-muted); }
.btn-full { width: 100%; justify-content: center; }

/* HERO */
.hero {
  flex: 1;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 100px 6vw 80px;
  position: relative;
}
.hero::before {
  content: ''; position: absolute;
  top: -20%; right: -10%; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(232,115,90,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute;
  bottom: 10%; left: -5%; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(232,180,77,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-label {
  font-family: 'Syne', sans-serif;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--coral); margin-bottom: 28px;
}
.hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 28px;
}
.coral { color: var(--coral); }
.hero-sub {
  font-size: 1.2rem; line-height: 1.6;
  color: var(--text-secondary);
  max-width: 540px; margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* FEATURES */
.features {
  padding: 80px 6vw;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 1100px; margin: 0 auto;
}
.feature { text-align: center; padding: 32px 24px; }
.feature-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.feature h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.2rem; font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.feature p { font-size: 0.95rem; line-height: 1.6; color: var(--text-secondary); }

/* CTA BAND */
.cta-band {
  text-align: center;
  padding: 80px 6vw;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-band h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--text-primary);
}

/* APP LAYOUT */
.app-layout {
  flex: 1;
  max-width: 900px; margin: 0 auto;
  padding: 48px 32px;
  width: 100%;
}
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 40px;
}
.app-header h1 {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem; font-weight: 800;
  color: var(--text-primary);
}

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 80px 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.empty-icon { margin-bottom: 20px; display: flex; justify-content: center; }
.empty-state h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.3rem; margin-bottom: 10px;
}
.empty-state p { color: var(--text-secondary); margin-bottom: 28px; }

/* SIGNALS FEED */
.signals-feed { display: flex; flex-direction: column; gap: 20px; }
.signal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.15s;
}
.signal-card:hover { border-color: var(--text-muted); }
.signal-header {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 14px;
}
.signal-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--coral);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
  color: #fff; flex-shrink: 0;
}
.signal-meta { flex: 1; display: flex; flex-direction: column; gap: 4px; }
.signal-friend { font-weight: 600; font-size: 1rem; }
.signal-type {
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-secondary);
  display: inline-block;
  padding: 3px 10px;
  background: var(--bg-card-hover);
  border-radius: 100px;
}
.signal-date { font-size: 0.85rem; color: var(--text-muted); }
.signal-description { font-size: 0.95rem; line-height: 1.6; color: var(--text-secondary); margin-bottom: 16px; }

/* GIFT RECOMMENDATION */
.gift-rec {
  background: rgba(232,115,90,0.08);
  border: 1px solid rgba(232,115,90,0.2);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.gift-label {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--coral); margin-bottom: 10px;
}
.gift-content { display: flex; flex-direction: column; gap: 4px; }
.gift-content strong { font-size: 1rem; color: var(--text-primary); }
.gift-price {
  font-size: 0.85rem; color: var(--amber);
  font-weight: 600;
}
.gift-reason { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; margin: 0; }

/* MODAL */
.modal {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}
.modal-panel {
  position: relative; z-index: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%; max-width: 520px;
  max-height: 90vh; overflow-y: auto;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px;
}
.modal-header h2 {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem; font-weight: 700;
}
.modal-close {
  background: none; border: none;
  font-size: 1.6rem; color: var(--text-muted);
  cursor: pointer; line-height: 1;
  padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }

/* FORM */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.85rem; font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--coral);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select { cursor: pointer; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 32px;
  text-align: center;
  color: var(--text-muted); font-size: 0.85rem;
}
.footer a { color: var(--text-secondary); }

/* RESPONSIVE */
@media (max-width: 640px) {
  .hero { padding: 80px 6vw 60px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-actions { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .app-layout { padding: 32px 20px; }
  .nav-inner { padding: 0 20px; }
}