/* Imports */
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:ital,wght@0,100..700;1,100..700&display=swap');

/* Base reset */
* { box-sizing: border-box; }
html, body { height: 100%; font-family: 'Roboto Mono', monospace; }
body { margin: 0; }
[hidden] { display: none !important; }

/* Typography */
:root {
  --bg: #0c0820;
  --surface-1: #1c1637;
  --surface-2: #2a2451;
  --surface-3: #352e68;
  --card: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  --text: #ebe7ff;
  --muted: #bdb7df;
  --accent: #7cc9ff;
  --border: #5a76ff;
  --shadow: 0 6px 16px rgba(0,0,0,0.35);
}

html[data-theme="light"] {
  --bg: #faf9ff;
  --surface-1: #ffffff;
  --surface-2: #f3f4ff;
  --surface-3: #e8e9ff;
  --card: #3A3E5B;
  --text: #0c0820;
  --card-text: #faf9ff;
  --muted: #4b4f76;
  --accent: #3a77ff;
  --border: #aab7ff;
  --shadow: 0 6px 16px rgba(20,16,40,0.1);
}

html[data-theme="reader"] {
  --bg: #f7f3e8;
  --surface-1: #fff;
  --surface-2: #f2eee4;
  --surface-3: #e8e2d6;
  --card: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  --text: #1a130c;
  --muted: #5c5346;
  --accent: #0d6efd;
  --border: #d1c8b7;
  --shadow: 0 6px 16px rgba(0,0,0,0.06);
}

body {
  background: var(--bg);
  color: var(--text);
  /* font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; */
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  padding: 24px 20px 64px;
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(120%) blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.header-actions { display: flex; gap: 10px; align-items: center; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid color-mix(in oklab, var(--border), transparent 60%);
  background: color-mix(in oklab, var(--surface-2), transparent 20%);
  color: var(--text);
  box-shadow: var(--shadow);
  cursor: pointer;
}
.icon-btn:hover { outline: 2px solid color-mix(in oklab, var(--accent), transparent 40%); }

.settings { position: relative; }
.settings-panel {
  position: absolute;
  right: 0;
  top: 40px;
  width: 180px;
  padding: 10px;
  display: grid;
  gap: 6px;
  border: 1px solid color-mix(in oklab, var(--border), transparent 30%);
  border-radius: 12px;
  background: var(--surface-1);
  box-shadow: var(--shadow);
}

.panel-group .radio {
  display: grid;
  grid-template-columns: 16px 1fr;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
}
.panel-group .radio:hover { background: color-mix(in oklab, var(--surface-3), transparent 65%); }
.panel-group input[type="radio"] { accent-color: var(--accent); }

.hero {
  padding: 36px 0 22px;
}
.hero h1 {
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: 1px;
  margin: 0 0 4px;
}
.subtitle {
  margin: 0 0 10px;
  font-weight: 600;
  color: var(--muted);
}

.section { margin-top: 16px; }
.section h2 {
  font-size: 17px;
  letter-spacing: 0.6px;
  color: var(--muted);
  margin: 14px 0 10px;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 720px) {
  /* .cards { grid-template-columns: repeat(3, 1fr); } */
  .cards { 
    grid-template-columns: repeat(3, 1fr); /* primera ancha, las otras iguales */
  }

  .card .middle-card { 
    display: grid;
    grid-template-columns: 1fr 1fr; 
  }
  .cards .featured { grid-column: 1 / -1; }
}

.card {
  background: var(--card);
  border: 1px solid color-mix(in oklab, var(--border), transparent 40%);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.card header {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: color-mix(in oklab, var(--card-text), transparent 18%);
  margin-bottom: 10px;
}
.card p { margin: 0; color: color-mix(in oklab, var(--card-text), transparent 10%); }
.card footer {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}
.card .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: 6px; }
.card.featured { border-width: 2px; border-color: color-mix(in oklab, var(--accent), var(--border) 60%); }
.two-col { display: grid; gap: 12px; }


@media (min-width: 720px) { .two-col { grid-template-columns: 2fr 1fr; } }
.note {
  background: color-mix(in oklab, var(--surface-3), transparent 35%);
  border: 1px solid color-mix(in oklab, var(--border), transparent 35%);
  border-radius: 10px;
  padding: 10px;
}

.site-footer { padding: 36px 20px; }
.footer-inner { max-width: 1100px; margin: 0 auto; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.footer-inner a { color: inherit; text-decoration: none; border-bottom: 1px dashed color-mix(in oklab, var(--muted), transparent 50%); }
.footer-inner a:hover { color: var(--text); border-bottom-color: var(--text); }
.footer-icon { opacity: .6; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0;
}