/* ════════════════════════════════════════════════════════════
   ArjunaFit — Design System v1
   visual-system-premium-v1
   ════════════════════════════════════════════════════════════ */

/* ── Design tokens ──────────────────────────────────────────── */
:root {
  --af-bg:          #07020f;
  --af-surface:     #10071d;
  --af-surface-2:   #170b2a;
  --af-border:      rgba(167,139,250,0.22);
  --af-border-strong: rgba(167,139,250,0.45);
  --af-text:        #f5f3ff;
  --af-text-muted:  #a8a0b8;
  --af-purple:      #8b5cf6;
  --af-pink:        #ec4899;
  --af-mint:        #5eead4;
  --af-gold:        #fbbf24;
  --af-danger:      #fb7185;
  --af-glow:        rgba(139,92,246,0.3);
  --af-gradient:    linear-gradient(135deg, #8b5cf6, #ec4899);
  --af-r:           16px;
  --af-r-lg:        22px;
  --af-ease:        cubic-bezier(0.34, 1.12, 0.64, 1);

  /* Legacy aliases */
  --primary:        #8b5cf6;
  --pri-glow:       rgba(139,92,246,0.3);
  --pri-lite:       #ddd6fe;
  --accent:         #ec4899;
  --bg:             #07020f;
  --text-1:         #f5f3ff;
  --text-2:         rgba(245,243,255,0.72);
  --text-3:         rgba(245,243,255,0.42);

  /* Badge colors */
  --badge-trial:    rgba(124,58,237,.15);
  --badge-reto:     rgba(250,204,21,.12);
  --badge-protein:  rgba(52,211,153,.12);
  --badge-fast:     rgba(245,158,11,.12);
  --badge-eco:      rgba(34,197,94,.1);
  --badge-complete: rgba(52,211,153,.2);
}

/* ── Base page layout ───────────────────────────────────────── */
.af-page {
  background: var(--af-bg);
  color: var(--af-text);
  font-family: 'Outfit', sans-serif;
  min-height: 100dvh;
  overflow-x: hidden;
}
.af-container {
  max-width: 430px;
  margin: 0 auto;
  padding: 0 20px;
}
.af-bottom-safe {
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
}
.af-divider {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 20px 0;
}

/* ── Buttons ────────────────────────────────────────────────── */
.af-button-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 50px;
  padding: 13px 20px;
  border: none;
  border-radius: var(--af-r);
  cursor: pointer;
  background: var(--af-gradient);
  color: #fff;
  font-family: 'Outfit', sans-serif;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 6px 28px var(--af-glow);
  transition: transform 0.15s var(--af-ease), box-shadow 0.2s;
  letter-spacing: 0.01em;
  text-decoration: none;
}
.af-button-primary:active { transform: scale(0.97); box-shadow: 0 3px 14px var(--af-glow); }
.af-button-primary:disabled { opacity: 0.38; cursor: not-allowed; transform: none; }

.af-button-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  padding: 12px 20px;
  border: 1.5px solid var(--af-border-strong);
  border-radius: var(--af-r);
  cursor: pointer;
  background: rgba(255,255,255,0.03);
  color: #ddd6fe;
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 700;
  transition: border-color 0.2s, background 0.2s;
  text-decoration: none;
}
.af-button-secondary:active { background: rgba(167,139,250,0.08); }

.af-button-ghost {
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  color: var(--af-text-muted);
  padding: 10px;
  display: block;
  width: 100%;
  text-align: center;
}

/* ── Cards ──────────────────────────────────────────────────── */
.af-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-lg);
  padding: 18px 20px;
}
.af-card-premium {
  background: linear-gradient(145deg, rgba(139,92,246,0.13), rgba(236,72,153,0.07));
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-lg);
  padding: 20px;
  box-shadow: 0 8px 32px rgba(139,92,246,0.1);
}
.af-card-compact {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--af-r);
  padding: 14px 16px;
}

/* ── Alert cards ────────────────────────────────────────────── */
.af-alert-card {
  border-radius: var(--af-r-lg);
  padding: 16px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.af-alert-card.info    { background: rgba(139,92,246,0.08); border: 1px solid var(--af-border); }
.af-alert-card.warning { background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.22); }
.af-alert-card.success { background: rgba(94,234,212,0.07); border: 1px solid rgba(94,234,212,0.2); }
.af-alert-card.danger  { background: rgba(251,113,133,0.08); border: 1px solid rgba(251,113,133,0.2); }
.af-alert-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; flex-shrink: 0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}
.af-alert-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.af-alert-body  { font-size: 12px; color: var(--af-text-muted); line-height: 1.65; }

/* ── Option cards (onboarding, intake, etc.) ────────────────── */
.af-option-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  background: rgba(255,255,255,0.03);
  border: 1.5px solid rgba(255,255,255,0.07);
  border-radius: var(--af-r);
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s;
  text-align: left;
  width: 100%;
}
.af-option-card:active { transform: scale(0.985); }
.af-option-card.selected,
.af-option-card.sel {
  background: rgba(139,92,246,0.1);
  border-color: rgba(167,139,250,0.45);
}
.af-option-check {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.04);
  flex-shrink: 0; position: relative;
  transition: all 0.18s;
}
.af-option-card.selected .af-option-check,
.af-option-card.sel .af-option-check {
  background: var(--af-purple);
  border-color: var(--af-purple);
}
.af-option-check::after {
  content: '';
  position: absolute; inset: 5px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transition: opacity 0.15s;
}
.af-option-card.selected .af-option-check::after,
.af-option-card.sel .af-option-check::after { opacity: 1; }
.af-option-icon { font-size: 20px; flex-shrink: 0; }
.af-option-text { font-size: 14px; font-weight: 600; color: var(--af-text); }
.af-option-sub  { font-size: 11px; color: var(--af-text-muted); margin-top: 2px; }

/* ── Chips ──────────────────────────────────────────────────── */
.af-chip {
  padding: 9px 14px;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: 24px;
  font-size: 12px; font-weight: 600;
  color: var(--af-text-muted);
  cursor: pointer;
  transition: all 0.18s;
}
.af-chip.sel, .af-chip.selected {
  background: rgba(139,92,246,0.14);
  border-color: rgba(167,139,250,0.42);
  color: #ddd6fe;
}

/* ── Inputs ─────────────────────────────────────────────────── */
.af-input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: var(--af-r);
  color: var(--af-text);
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
}
.af-input::placeholder { color: var(--af-text-muted); }
.af-input:focus {
  border-color: var(--af-purple);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.18);
}
.af-input.error { border-color: var(--af-danger); }

/* ── Badges ─────────────────────────────────────────────────── */
.af-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 10px; font-weight: 700; letter-spacing: 0.04em;
  white-space: nowrap;
}
.af-badge-purple { background: var(--badge-trial); color: #ddd6fe; border: 1px solid rgba(167,139,250,0.2); }
.af-badge-amber  { background: rgba(245,158,11,0.12); color: #fbbf24; border: 1px solid rgba(245,158,11,0.22); }
.af-badge-green  { background: var(--badge-complete); color: #5eead4; border: 1px solid rgba(94,234,212,0.2); }
.af-badge-pink   { background: rgba(236,72,153,0.12); color: #f9a8d4; border: 1px solid rgba(236,72,153,0.2); }

/* ── Section titles ─────────────────────────────────────────── */
.af-section-title {
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: rgba(255,255,255,0.28);
  margin-bottom: 12px;
}
.af-section-subtitle {
  font-size: 13px; color: var(--af-text-muted);
  line-height: 1.65; margin-bottom: 16px;
}

/* ── Empty state ─────────────────────────────────────────────── */
.af-empty-state {
  text-align: center;
  padding: 40px 24px;
}
.af-empty-icon {
  font-size: 44px; margin-bottom: 14px;
  filter: grayscale(0.3) opacity(0.7);
}
.af-empty-title {
  font-size: 17px; font-weight: 700;
  margin-bottom: 8px; color: var(--af-text);
}
.af-empty-body {
  font-size: 13px; color: var(--af-text-muted);
  line-height: 1.7; margin-bottom: 20px;
}

/* ── Loading / spinner ──────────────────────────────────────── */
.af-spinner {
  width: 36px; height: 36px;
  border: 3px solid rgba(139,92,246,0.2);
  border-top-color: var(--af-purple);
  border-radius: 50%;
  animation: af-spin 0.8s linear infinite;
}
@keyframes af-spin { to { transform: rotate(360deg); } }

/* ── Glow effects ────────────────────────────────────────────── */
.af-glow { box-shadow: 0 0 24px var(--af-glow); }
.af-glow-strong { box-shadow: 0 0 48px rgba(139,92,246,0.4); }

/* ── Product selection cards (signup) ───────────────────────── */
.af-product-card {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  background: rgba(255,255,255,0.03);
  border: 1.5px solid rgba(255,255,255,0.07);
  border-radius: var(--af-r-lg);
  cursor: pointer;
  transition: all 0.2s var(--af-ease);
  margin-bottom: 10px;
}
.af-product-card:active { transform: scale(0.98); }
.af-product-card.selected, .af-product-card.active {
  background: rgba(139,92,246,0.1);
  border-color: rgba(167,139,250,0.45);
  box-shadow: 0 4px 20px rgba(139,92,246,0.15);
}
.af-product-icon { font-size: 26px; flex-shrink: 0; }
.af-product-name { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.af-product-price {
  font-size: 11px; font-weight: 600; color: var(--af-text-muted);
}
.af-product-tag {
  display: inline-block;
  padding: 2px 8px; border-radius: 8px;
  font-size: 10px; font-weight: 700;
  background: rgba(94,234,212,0.12);
  color: #5eead4; border: 1px solid rgba(94,234,212,0.2);
  margin-top: 4px;
}
.af-product-tag.premium {
  background: rgba(167,139,250,0.12);
  color: #ddd6fe; border-color: rgba(167,139,250,0.2);
}

/* ── Nav ──────────────────────────────────────────────────────── */
.af-nav {
  position: fixed;
  bottom: calc(12px + env(safe-area-inset-bottom));
  left: 50%; transform: translateX(-50%);
  width: min(calc(100vw - 24px), 406px);
  height: 64px;
  background: rgba(12,7,22,0.88);
  backdrop-filter: blur(40px) saturate(1.8);
  border: 1px solid rgba(167,139,250,0.09);
  border-radius: 26px;
  display: flex; align-items: flex-start;
  z-index: 100;
  box-shadow: 0 12px 40px rgba(0,0,0,0.55);
}