:root {
  --bg: #f5f6fa;
  --card-bg: #ffffff;
  --text: #1c1f26;
  --muted: #6b7280;
  --border: #e3e5ea;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.center-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

h1, h2, h3 { line-height: 1.2; }

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
  text-decoration: none;
}

nav.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

nav.topnav .links { display: flex; gap: 18px; align-items: center; }
nav.topnav a { color: var(--text); text-decoration: none; font-size: 0.95rem; }
nav.topnav a:hover { color: var(--primary); }

.tabs { display: flex; gap: 8px; margin: 20px 0; flex-wrap: wrap; }
.tab-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  cursor: pointer;
  font-size: 0.9rem;
}
.tab-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

.panel { display: none; }
.panel.active { display: block; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

label { display: block; font-size: 0.85rem; color: var(--muted); margin: 12px 0 4px; }
input, select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
}

button, .btn {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--primary);
  color: white;
}
button:hover, .btn:hover { background: var(--primary-dark); }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.secondary:hover { background: var(--bg); }
button.danger { background: var(--danger); }
button.small { padding: 6px 10px; font-size: 0.8rem; }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.gift-card img { width: 100%; border-radius: 8px; margin-bottom: 8px; height: 140px; object-fit: cover; background: #eee; }
.gift-price { font-weight: 700; color: var(--primary); }

.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.pill.succeeded { background: #dcfce7; color: var(--success); }
.pill.failed { background: #fee2e2; color: var(--danger); }
.pill.default { background: #ede9fe; color: var(--primary); }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.msg { padding: 10px 14px; border-radius: 8px; margin: 12px 0; font-size: 0.9rem; }
.msg.error { background: #fee2e2; color: var(--danger); }
.msg.success { background: #dcfce7; color: var(--success); }

.muted { color: var(--muted); font-size: 0.85rem; }
.hidden { display: none !important; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal { background: var(--card-bg); border-radius: var(--radius); padding: 24px; width: 100%; max-width: 420px; }

.card-item { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); }
.card-item:last-child { border-bottom: none; }