/* Shared styles for the Hebrew tutor. Light/dark aware, RTL-friendly. */

:root {
  --bg: #f5f3ee;
  --surface: #ffffff;
  --surface-2: #faf8f3;
  --ink: #1f2430;
  --ink-soft: #5a6072;
  --border: #e3ded3;
  --accent: #2f6f5e;      /* teal-green */
  --accent-ink: #ffffff;
  --accent-soft: #e4efe9;
  --danger: #b3402f;
  --gold: #c99a2e;
  --shadow: 0 1px 2px rgba(31, 36, 48, .06), 0 8px 24px rgba(31, 36, 48, .08);
  --radius: 14px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
          "Noto Sans Hebrew", "Arial Hebrew", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161c;
    --surface: #1d2029;
    --surface-2: #232630;
    --ink: #eef0f5;
    --ink-soft: #a2a8b8;
    --border: #333844;
    --accent: #4f9d87;
    --accent-soft: #21322d;
    --danger: #d76a58;
    --gold: #d8b155;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.site-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.site-header .brand {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.site-header .brand .logo { font-size: 1.4rem; }
.site-header .spacer { flex: 1; }
.site-header nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: .95rem;
  margin-inline-start: 1rem;
}
.site-header nav a:hover { color: var(--ink); }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.page-title { margin: 0 0 .25rem; font-size: clamp(1.5rem, 4vw, 2rem); }
.page-subtitle { margin: 0 0 1.75rem; color: var(--ink-soft); }

/* Cards / tiles ---------------------------------------------------------- */
.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.tile {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform .12s ease, box-shadow .12s ease;
}
.tile:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(0,0,0,.12), 0 14px 40px rgba(0,0,0,.12); }
.tile h3 { margin: .35rem 0 .35rem; font-size: 1.15rem; }
.tile p { margin: 0; color: var(--ink-soft); font-size: .92rem; }
.tile .emoji { font-size: 1.9rem; }
.tile.disabled { opacity: .55; pointer-events: none; }

/* Buttons ---------------------------------------------------------------- */
.btn {
  --btn-bg: var(--surface);
  --btn-ink: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font: inherit;
  font-weight: 600;
  padding: .6rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--btn-bg);
  color: var(--btn-ink);
  cursor: pointer;
  text-decoration: none;
  transition: filter .12s ease, transform .06s ease;
}
.btn:hover { filter: brightness(1.03); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { --btn-bg: var(--accent); --btn-ink: var(--accent-ink); border-color: transparent; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: transparent; }
.btn.big { padding: .8rem 1.4rem; font-size: 1.05rem; }

.toolbar { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-bottom: 1.5rem; }
.toolbar .spacer { flex: 1; }

/* Forms ------------------------------------------------------------------ */
label { font-weight: 600; font-size: .9rem; display: block; margin-bottom: .35rem; }
input[type="text"], input[type="number"] {
  font: inherit;
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* Hebrew text should render right-to-left. */
.rtl, [dir="rtl"] { direction: rtl; }
.hebrew { direction: rtl; unicode-bidi: isolate; }

/* Feedback / empty states ----------------------------------------------- */
.empty {
  text-align: center;
  color: var(--ink-soft);
  padding: 3rem 1rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}
.notice {
  padding: .7rem 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  font-size: .95rem;
}
.notice.error { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); }
.notice.ok { background: var(--accent-soft); color: var(--accent); }
.hidden { display: none !important; }

.card-list { display: grid; gap: .6rem; }
.card-list .row {
  display: flex; align-items: center; gap: .75rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: .75rem 1rem;
}
.card-list .row .name { font-weight: 600; flex: 1; }
.card-list .row .meta { color: var(--ink-soft); font-size: .82rem; }

.footer-note { color: var(--ink-soft); font-size: .82rem; text-align: center; padding: 2rem 1rem; }