:root {
  --azul: #0D3B65;
  --verde: #4DB69C;
  --hueso: #E9E5D6;
  --gris: #4A4A4A;
  --negro: #1B1B1B;
  --bg: var(--hueso);
  --card-bg: #ffffff;
  --text: var(--negro);
  --border: #d8d3c0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12181f;
    --card-bg: #1c2530;
    --text: #eef0f2;
    --border: #2b3644;
  }
}
:root[data-theme="dark"] {
  --bg: #12181f;
  --card-bg: #1c2530;
  --text: #eef0f2;
  --border: #2b3644;
}
:root[data-theme="light"] {
  --bg: var(--hueso);
  --card-bg: #ffffff;
  --text: var(--negro);
  --border: #d8d3c0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Aktiv Grotesk", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 72px;
}

h1, h2, h3 {
  font-family: "Orpheus Pro Condensed", Georgia, serif;
  color: var(--azul);
  margin: 0.2em 0 0.4em;
}
:root[data-theme="dark"] h1, :root[data-theme="dark"] h2, :root[data-theme="dark"] h3 {
  color: var(--verde);
}

header.topbar {
  background: var(--azul);
  color: white;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
header.topbar h1 { color: white; font-size: 1.3rem; margin: 0; }
header.topbar .date-nav { display: flex; align-items: center; gap: 10px; }
header.topbar button.icon-btn {
  background: none; border: none; color: white; font-size: 1.2rem; padding: 4px 10px; cursor: pointer;
}

main { max-width: 640px; margin: 0 auto; padding: 12px; }

.slot-group { margin-bottom: 18px; }
.slot-title {
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--gris); margin: 12px 0 6px; font-weight: 600;
}

.habit-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.habit-card.status-done { border-left: 5px solid var(--verde); }
.habit-card.status-failed { border-left: 5px solid #c0392b; opacity: 0.85; }
.habit-card.status-pending { border-left: 5px solid var(--gris); }

.habit-main { flex: 1; min-width: 0; }
.habit-name { font-weight: 500; }
.habit-meta { font-size: 0.78rem; color: var(--gris); margin-top: 2px; }
.streak { font-size: 0.78rem; color: var(--verde); }

.habit-actions { display: flex; gap: 6px; flex-shrink: 0; }
button {
  font-family: inherit;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.9rem;
}
button.primary { background: var(--verde); color: white; border-color: var(--verde); }
button.danger { background: #c0392b; color: white; border-color: #c0392b; }
button.ghost { background: none; border: none; color: var(--azul); }
:root[data-theme="dark"] button.ghost { color: var(--verde); }

input, select {
  font-family: inherit;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  width: 100%;
}
label { display: block; font-size: 0.85rem; margin: 10px 0 4px; color: var(--gris); }

nav.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; background: var(--card-bg); border-top: 1px solid var(--border);
  padding: 6px 0 max(6px, env(safe-area-inset-bottom));
  z-index: 10;
}
nav.bottom-nav a {
  flex: 1; text-align: center; text-decoration: none; color: var(--gris);
  font-size: 0.78rem; padding: 6px 0;
}
nav.bottom-nav a.active { color: var(--azul); font-weight: 600; }
:root[data-theme="dark"] nav.bottom-nav a.active { color: var(--verde); }

table.week-grid { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
table.week-grid th, table.week-grid td { padding: 6px 4px; text-align: center; border-bottom: 1px solid var(--border); }
table.week-grid th:first-child, table.week-grid td:first-child { text-align: left; }
.cell-done { color: var(--verde); font-weight: bold; }
.cell-failed { color: #c0392b; }
.cell-pending { color: var(--gris); }
.cell-na { color: var(--border); }

.summary-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px; margin-top: 16px;
}
.summary-total { font-size: 2rem; font-weight: 700; color: var(--azul); }
:root[data-theme="dark"] .summary-total { color: var(--verde); }
.summary-delta { font-size: 0.9rem; margin-left: 8px; }
.summary-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 0.88rem; }

.login-box {
  max-width: 320px; margin: 15vh auto 0; padding: 24px;
  background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border);
}

.toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  background: var(--negro); color: white; padding: 10px 16px; border-radius: 8px;
  font-size: 0.85rem; z-index: 20; opacity: 0.95;
}