:root {
  --bg: #0f1420;
  --panel: #182031;
  --line: #26314a;
  --text: #e7edf6;
  --muted: #93a2bd;
  --accent: #f5a524;
  --accent-2: #38bdf8;
  --danger: #f87171;
  --ok: #4ade80;
  --input-bg: #0e1626;
  --chip: #223049;
  --on-accent: #1a1200;
}

/* Light palette: applied when the OS is light (and no explicit choice),
   or when the user explicitly picks light. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f4f6fb;
    --panel: #ffffff;
    --line: #dbe2ee;
    --text: #1b2436;
    --muted: #5c6b86;
    --accent: #e8930c;
    --accent-2: #0284c7;
    --danger: #dc2626;
    --ok: #16a34a;
    --input-bg: #ffffff;
    --chip: #e7edf6;
    --on-accent: #241900;
  }
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --line: #dbe2ee;
  --text: #1b2436;
  --muted: #5c6b86;
  --accent: #e8930c;
  --accent-2: #0284c7;
  --danger: #dc2626;
  --ok: #16a34a;
  --input-bg: #ffffff;
  --chip: #e7edf6;
  --on-accent: #241900;
}

:root { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
}

h1 { margin: 0; font-size: 22px; }
h2 { margin: 0 0 12px; font-size: 17px; }

main { max-width: 820px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.form { display: flex; flex-direction: column; gap: 10px; }
.form.row { flex-direction: row; flex-wrap: wrap; align-items: center; }
.form.row input { flex: 1; min-width: 140px; }

input, select, button, textarea {
  font-family: inherit;
  font-size: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--input-bg);
  color: var(--text);
}
textarea {
  resize: vertical;
  width: 100%;
  line-height: 1.5;
  min-height: 44px;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-2);
}
input::placeholder, textarea::placeholder { color: var(--muted); }

button {
  background: var(--accent);
  color: var(--on-accent);
  border: none;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button.link {
  background: none;
  color: var(--accent-2);
  padding: 4px 8px;
}
button.secondary { background: var(--chip); color: var(--text); }
button.danger { background: none; color: var(--danger); padding: 4px 8px; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab { background: var(--chip); color: var(--muted); }
.tab.active { background: var(--accent); color: var(--on-accent); }

.header-controls { display: flex; align-items: center; gap: 10px; }
.whoami { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; }

.settings-head { display: flex; align-items: center; justify-content: space-between; }
.settings-head h2 { margin: 0; }

.task {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 14px;
}
.task-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.task-title { font-weight: 600; font-size: 16px; }
.task-title.done { text-decoration: line-through; color: var(--muted); }
.task-meta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.task-actions { display: flex; gap: 6px; flex-shrink: 0; }

.reminders { margin-top: 12px; border-top: 1px solid var(--line); padding-top: 12px; }
.reminder {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--muted); padding: 4px 0;
}
.reminder .badge {
  background: var(--input-bg); border: 1px solid var(--line);
  border-radius: 6px; padding: 2px 8px; color: var(--accent-2);
}
.add-reminder { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.add-reminder input, .add-reminder select { padding: 6px 8px; font-size: 13px; }
.add-reminder label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 4px; }

.error { color: var(--danger); min-height: 20px; font-size: 14px; }
.hidden { display: none !important; }

/* intro / hero */
.intro { text-align: center; padding: 28px 20px 8px; }
.intro-title {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 12px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.intro-lead {
  color: var(--muted);
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 18px;
}
.intro-points {
  list-style: none;
  padding: 0;
  margin: 0 auto 8px;
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  color: var(--text);
  font-size: 14px;
}

/* password show/hide */
.pw-wrap { position: relative; display: flex; }
.pw-wrap input { flex: 1; padding-right: 62px; }
.pw-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--chip);
  color: var(--accent-2);
  padding: 6px 10px;
  font-size: 13px;
  border-radius: 6px;
}

.field-label { font-size: 13px; color: var(--muted); margin-bottom: -4px; }