:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-solid: #fff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.08);
  --blue: #007aff;
  --green: #34c759;
  --orange: #ff9f0a;
  --red: #ff3b30;
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.09);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.9), rgba(245,245,247,0.96)),
    var(--bg);
  color: var(--text);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }

.mobile-page {
  width: min(100%, 520px);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px 40px;
}
.hero-panel {
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  border-radius: 28px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.08), rgba(0,0,0,0.62)),
    url("/assets/images/stamp_bg.jpg?v=20260605") center/cover;
  box-shadow: var(--shadow);
}
.hero-panel h1, .page-bar h1, .admin-header h1 { margin: 0; }
.hero-panel h1 { font-size: 36px; line-height: 1.08; }
.hero-panel p { margin: 12px 0 0; line-height: 1.7; }
.eyebrow, .label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.hero-panel .eyebrow { color: rgba(255,255,255,0.78); }

.page-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 8px 0 18px;
}
.back-link {
  color: var(--blue);
  font-weight: 600;
}
.progress-card, .notice-card, .list-section, .result-card, .coupon-card {
  margin-top: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 12px 28px rgba(0,0,0,0.06);
  backdrop-filter: blur(18px);
}
.progress-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.progress-card h2, .coupon-card h2, .list-section h2, .result-card h2 { margin: 0 0 6px; }
.progress-card p, .coupon-card p { margin: 0; color: var(--muted); }
.progress-ring {
  --size: 92px;
  width: var(--size);
  aspect-ratio: 1;
  flex: 0 0 var(--size);
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--blue) calc(var(--value) * 1%), rgba(0,0,0,0.08) 0);
  position: relative;
}
.progress-ring::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: #fff;
}
.progress-ring strong, .progress-ring span { z-index: 1; }
.progress-ring strong { font-size: 30px; }
.progress-ring span { margin-left: 3px; color: var(--muted); }

.action-grid, .button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}
.action-grid a, .primary-button, .secondary-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 14px;
  padding: 0 18px;
  font-weight: 700;
  cursor: pointer;
}
.action-grid a, .primary-button {
  color: #fff;
  background: var(--blue);
}
.secondary-button {
  color: var(--blue);
  background: rgba(0,122,255,0.1);
}
.stamp-row {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.stamp-row:first-of-type { border-top: 0; }
.stamp-row small, .empty { color: var(--muted); }
.stamp-dot {
  width: 18px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid rgba(0,0,0,0.18);
}
.stamp-dot.filled { border-color: var(--green); background: var(--green); }
.muted { color: var(--muted); }
.result-card { text-align: center; }
.result-icon {
  display: inline-grid;
  place-items: center;
  width: 56px;
  aspect-ratio: 1;
  margin-bottom: 12px;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  font-size: 32px;
  font-weight: 800;
}
.warning .result-icon { background: var(--orange); }
.coupon-stack { display: grid; gap: 14px; }
.coupon-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
}
.coupon-card form { grid-column: 1 / -1; }
.coupon-card strong { font-size: 30px; color: var(--blue); }
.coupon-card.used { opacity: 0.55; }

.admin {
  display: grid;
  grid-template-columns: 244px 1fr;
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 14px;
  border-right: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(22px);
}
.brand-mark {
  width: 48px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, #007aff, #34c759);
  color: #fff;
  font-weight: 800;
  font-size: 22px;
}
.sidebar nav { display: grid; gap: 6px; margin-top: 28px; }
.sidebar a {
  min-height: 42px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 650;
}
.sidebar a.active, .sidebar a:hover { color: var(--text); background: rgba(0,0,0,0.06); }
.logout-link { position: absolute; left: 14px; right: 14px; bottom: 22px; }
.admin-main {
  width: min(1180px, 100%);
  padding: 34px;
}
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
.admin-header h1 { font-size: 34px; }
.status-pill {
  padding: 8px 13px;
  border-radius: 999px;
  background: rgba(52,199,89,0.13);
  color: #178f3b;
  font-weight: 700;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.metric-grid.compact { grid-template-columns: repeat(3, minmax(180px, 1fr)); }
.metric-grid article, .panel, .qr-card, .login-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 14px 38px rgba(0,0,0,0.07);
  backdrop-filter: blur(20px);
}
.metric-grid article {
  padding: 18px;
}
.metric-grid span { color: var(--muted); font-size: 13px; font-weight: 700; }
.metric-grid strong { display: block; margin-top: 8px; font-size: 32px; }
.admin-grid {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 18px;
  align-items: start;
}
.panel { padding: 20px; }
.panel.wide { min-width: 0; }
.panel-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}
.panel-title h2 { margin: 0; }
.panel-title span { color: var(--muted); font-weight: 700; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; white-space: nowrap; }
th, td { padding: 13px 10px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-size: 12px; }
.flow-list { display: grid; gap: 10px; }
.flow-list div {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border-radius: 14px;
  background: rgba(0,0,0,0.04);
}
.form-panel { display: grid; gap: 14px; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
input, select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 12px;
  background: rgba(255,255,255,0.92);
  color: var(--text);
}
.check-row {
  grid-template-columns: auto 1fr;
  align-items: center;
}
.check-row input { width: 18px; min-height: 18px; }
.form-error {
  padding: 12px 14px;
  border-radius: 12px;
  color: #b42318;
  background: rgba(255,59,48,0.12);
}
.qr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.qr-card { padding: 16px; text-align: center; }
.qr-card.coupon-qr { border-color: rgba(52,199,89,0.28); }
.qr-card img { width: 100%; border-radius: 16px; background: #fff; }
.qr-card h2 { margin: 12px 0 4px; font-size: 18px; }
.qr-card p { margin: 0 0 12px; color: var(--muted); }
.command {
  overflow: auto;
  padding: 14px;
  border-radius: 12px;
  background: rgba(0,0,0,0.06);
}
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}
.login-card {
  width: min(100%, 420px);
  display: grid;
  gap: 16px;
  padding: 28px;
}
.login-card h1 { margin: 4px 0 0; }
.login-card p { margin: 0; color: var(--muted); }

@media (max-width: 860px) {
  .admin { display: block; }
  .sidebar {
    position: static;
    height: auto;
    display: flex;
    gap: 12px;
    align-items: center;
    overflow-x: auto;
  }
  .sidebar nav { display: flex; margin: 0; }
  .logout-link { position: static; }
  .admin-main { padding: 20px; }
  .metric-grid, .metric-grid.compact, .admin-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-panel { min-height: 300px; border-radius: 24px; }
  .hero-panel h1 { font-size: 31px; }
  .button-row, .action-grid { grid-template-columns: 1fr; }
  .coupon-card { grid-template-columns: 1fr; }
}