/* main.css - StackerDB (metal-aware selector version) */

:root {
  --bronze: #b87333;
  --bronze-dark: #8f5525;
  --bg: #ffffff;
  --page: #f6f7fb;
  --text: #14161a;
  --muted: #6b7280;
  --border: #e6e8ef;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(20, 22, 26, 0.08);
  --radius: 16px;
  --radius-sm: 12px;
  --max: 1100px;
  --tap: 44px;

  /* Metal colors */
  --silver-bg: #c9ccd1;
  --silver-text: #1f2937;

  --gold-bg: #f4c430;
  --gold-text: #3b2f00;

  --copper-bg: #c87533;
  --copper-text: #2b1606;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

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

a { color: inherit; text-decoration: none; }

.container {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

/* Top bronze ribbon */
.ribbon {
  background: linear-gradient(90deg, var(--bronze), var(--bronze-dark));
  color: #fff;
  height: 44px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 0 rgba(0,0,0,0.08);
}

.ribbon .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
}

/* Page */
.page { padding: 18px 0 28px; }

.hero {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.hero-top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
}

/* Metal selector */
.metal-picker {
  justify-self: center;
  display: inline-flex;
  border-radius: 999px;
  overflow: hidden;
  min-height: var(--tap);
  box-shadow: inset 0 0 0 1px var(--border);
  transition: background 250ms ease, box-shadow 250ms ease;
}

.metal-picker[data-metal="silver"] { background: var(--silver-bg); }
.metal-picker[data-metal="gold"]   { background: var(--gold-bg); }
.metal-picker[data-metal="copper"] { background: var(--copper-bg); }

.metal-picker button {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 10px 16px;
  min-height: var(--tap);
  cursor: pointer;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.3px;
  opacity: 0.55;
  transition: opacity 150ms ease, transform 120ms ease;
}

.metal-picker button:hover { opacity: 0.85; }

.metal-picker button[aria-pressed="true"] {
  opacity: 1;
  transform: translateY(-1px);
}

.metal-picker[data-metal="silver"] button { color: var(--silver-text); }
.metal-picker[data-metal="gold"] button   { color: var(--gold-text); }
.metal-picker[data-metal="copper"] button { color: var(--copper-text); }

/* Price grid */
.price-box {
  margin-top: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.city {
  padding: 14px 16px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.city:nth-child(4n) { border-right: 0; }

.city .name { font-weight: 800; font-size: 13px; }
.city .price { font-weight: 900; font-size: 16px; }

/* Responsive */
/* Default (desktop) */
.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Medium screens: 3 columns */
@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  /* Fix right border for 3-col layout */
  .city { border-right: 1px solid var(--border); }
  .city:nth-child(3n) { border-right: 0; }
}

/* Mobile: 2 columns */
@media (max-width: 720px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  /* Fix right border for 2-col layout */
  .city { border-right: 1px solid var(--border); }
  .city:nth-child(2n) { border-right: 0; }
}

/* Metal Picker responsive */
@media (max-width: 720px) {
  .hero-top {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .metal-picker {
    justify-self: start;
    width: 100%;
    max-width: 420px;
  }

  .metal-picker button {
    flex: 1;
    text-align: center;
  }

  .hero-right {
    text-align: left;
  }
}