/* ═══════════════════════════════════════════════════════
   ThurnCoffee — Liquid Glass design system
   แรงบันดาลใจจากภาษาดีไซน์กระจกเหลว: โปร่งแสง เบลอลึก
   มุมโค้งต่อเนื่อง แสงตกขอบ และการเคลื่อนไหวแบบสปริง
   ═══════════════════════════════════════════════════════ */

:root {
  --font: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Noto Sans Thai', 'Segoe UI', sans-serif;

  /* โทนกาแฟ — light */
  --bg-base: #f4ede3;
  --bg-glow-1: rgba(212, 165, 116, 0.55);   /* คาราเมล */
  --bg-glow-2: rgba(255, 214, 165, 0.5);    /* ครีมส้มอ่อน */
  --bg-glow-3: rgba(186, 140, 99, 0.35);    /* ลาเต้ */

  --ink: #2d2016;
  --ink-2: rgba(45, 32, 22, 0.62);
  --ink-3: rgba(45, 32, 22, 0.4);

  --glass: rgba(255, 255, 255, 0.52);
  --glass-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-shadow: 0 8px 32px rgba(93, 64, 39, 0.14), 0 2px 8px rgba(93, 64, 39, 0.08);
  --glass-inset: inset 0 1px 0 rgba(255, 255, 255, 0.7);

  --accent: #a3672e;
  --accent-deep: #7a4a1d;
  --accent-grad: linear-gradient(135deg, #c98a4b, #8f5a26);
  --on-accent: #fff;

  --ok: #3f8f52;
  --warn: #c0392b;

  --r-lg: 28px;
  --r-md: 20px;
  --r-sm: 14px;

  --spring: cubic-bezier(0.32, 0.72, 0.28, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-base: #17110c;
    --bg-glow-1: rgba(140, 90, 45, 0.4);
    --bg-glow-2: rgba(90, 55, 30, 0.45);
    --bg-glow-3: rgba(60, 38, 22, 0.5);

    --ink: #f2e8dc;
    --ink-2: rgba(242, 232, 220, 0.62);
    --ink-3: rgba(242, 232, 220, 0.38);

    --glass: rgba(46, 34, 24, 0.5);
    --glass-strong: rgba(56, 42, 30, 0.72);
    --glass-border: rgba(255, 240, 220, 0.14);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.3);
    --glass-inset: inset 0 1px 0 rgba(255, 240, 220, 0.1);

    --accent: #d9995c;
    --accent-deep: #b87a3e;
    --accent-grad: linear-gradient(135deg, #d9995c, #96602a);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html { height: 100%; }

body {
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg-base);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  overflow-x: hidden;
}

/* ── พื้นหลังเรืองแสงนุ่มๆ ── */
body::before {
  content: '';
  position: fixed;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(42% 38% at 18% 12%, var(--bg-glow-1), transparent 70%),
    radial-gradient(50% 42% at 85% 20%, var(--bg-glow-2), transparent 70%),
    radial-gradient(55% 50% at 50% 100%, var(--bg-glow-3), transparent 72%);
  filter: blur(48px);
  pointer-events: none;
}

/* ── การ์ดกระจก ── */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  backdrop-filter: blur(24px) saturate(1.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  box-shadow: var(--glass-shadow), var(--glass-inset);
}

.glass-strong {
  background: var(--glass-strong);
  -webkit-backdrop-filter: blur(32px) saturate(1.7);
  backdrop-filter: blur(32px) saturate(1.7);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-inset);
}

/* ── ตัวอักษร ── */
.title-lg { font-size: 32px; font-weight: 800; letter-spacing: -0.5px; }
.title-md { font-size: 19px; font-weight: 700; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }

/* ── ปุ่ม ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 22px;
  border-radius: 999px;
  transition: transform 0.35s var(--spring), box-shadow 0.35s var(--spring), opacity 0.2s;
  user-select: none;
}
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.45; pointer-events: none; }

.btn-accent {
  background: var(--accent-grad);
  color: var(--on-accent);
  box-shadow: 0 6px 20px rgba(140, 90, 40, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  border: 1px solid var(--glass-border);
  color: var(--ink);
  box-shadow: var(--glass-shadow);
}

.btn-danger { background: rgba(192, 57, 43, 0.12); color: var(--warn); border: 1px solid rgba(192, 57, 43, 0.25); }

/* ── แคปซูลหมวด ── */
.capsule-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 10px;
  scrollbar-width: none;
}
.capsule-bar::-webkit-scrollbar { display: none; }

.capsule {
  flex: 0 0 auto;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--glass);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all 0.3s var(--spring);
  white-space: nowrap;
}
.capsule.on {
  background: var(--accent-grad);
  color: var(--on-accent);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(140, 90, 40, 0.35);
}

/* ── segmented control (ร้อน/เย็น/ปั่น) ── */
.segmented {
  display: flex;
  padding: 4px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.06);
  gap: 4px;
}
@media (prefers-color-scheme: dark) {
  .segmented { background: rgba(255, 255, 255, 0.06); }
}
.segmented button {
  flex: 1;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-2);
  padding: 10px 6px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s var(--spring);
  line-height: 1.3;
}
.segmented button.on {
  background: var(--glass-strong);
  color: var(--ink);
  box-shadow: 0 2px 10px rgba(93, 64, 39, 0.18);
}
.segmented button .p { display: block; font-size: 12px; font-weight: 600; color: var(--ink-3); }
.segmented button.on .p { color: var(--accent); }

/* ── chips ท็อปปิ้ง ── */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-2);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all 0.25s var(--spring);
  user-select: none;
}
.chip.on {
  background: var(--accent-grad);
  color: var(--on-accent);
  border-color: transparent;
  box-shadow: 0 3px 10px rgba(140, 90, 40, 0.3);
}

/* ── bottom sheet ── */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(30, 20, 12, 0.35);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
  z-index: 40;
}
.backdrop.show { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  max-height: 88dvh;
  display: flex;
  flex-direction: column;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  transform: translateY(105%);
  transition: transform 0.45s var(--spring);
  padding-bottom: max(16px, env(safe-area-inset-bottom));
  overflow: hidden;
}
.sheet.show { transform: translateY(0); }
.sheet .grabber {
  width: 40px;
  height: 5px;
  border-radius: 3px;
  background: var(--ink-3);
  margin: 10px auto 4px;
  flex: 0 0 auto;
}
.sheet .sheet-body { overflow-y: auto; padding: 8px 18px 18px; }

@media (min-width: 640px) {
  .sheet { left: 50%; right: auto; width: 560px; transform: translate(-50%, 105%); }
  .sheet.show { transform: translate(-50%, 0); }
}

/* ── toast ── */
#toast {
  position: fixed;
  top: calc(14px + env(safe-area-inset-top));
  left: 50%;
  transform: translate(-50%, -80px);
  z-index: 90;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  transition: transform 0.45s var(--spring);
  max-width: min(92vw, 480px);
  text-align: center;
}
#toast.show { transform: translate(-50%, 0); }

/* ── form ── */
input[type='text'], input[type='password'], input[type='number'] {
  font-family: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(163, 103, 46, 0.18); }
input::placeholder { color: var(--ink-3); }

/* ── utility ── */
.row { display: flex; align-items: center; gap: 10px; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.wrap { max-width: 720px; margin: 0 auto; padding: 18px 16px 40px; }
.center { text-align: center; }