/* style.css — Countdown Days */

/* ── Design tokens ─────────────────────────────────────────────────────────── */

:root {
  --bg:          #f5f5f5;
  --surface:     #ffffff;
  --surface2:    #f0f0f0;
  --text:        #1a1a1a;
  --text-muted:  #666666;
  --border:      #e0e0e0;
  --accent:      #4f8ef7;
  --danger:      #e53935;
  --radius:      12px;
  --radius-sm:   6px;
  --shadow:      0 2px 8px rgba(0,0,0,.08);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.15);
  --transition:  .2s ease;
}

[data-theme="dark"] {
  --bg:          #121212;
  --surface:     #1e1e1e;
  --surface2:    #2a2a2a;
  --text:        #f0f0f0;
  --text-muted:  #888888;
  --border:      #333333;
  --shadow:      0 2px 8px rgba(0,0,0,.4);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.6);
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue',
               'Hiragino Sans', 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

/* ── Layout ────────────────────────────────────────────────────────────────── */

.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  flex: 1;
}

.app-title span { font-size: 1.4rem; margin-right: .4rem; }

.header-actions { display: flex; gap: .5rem; }

main { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  transition: opacity var(--transition), transform var(--transition);
}

.btn:hover { opacity: .85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--accent); color: #fff; }
.btn--secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-icon {
  width: 2rem; height: 2rem;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-size: 1rem;
  transition: background var(--transition);
}
.btn-icon:hover { background: var(--surface2); }

/* ── Cards ─────────────────────────────────────────────────────────────────── */

.section { margin-bottom: 2.5rem; }
.section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 1rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  border-left: 5px solid var(--card-color, var(--accent));
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.card--past {
  opacity: .75;
  border-left-color: var(--text-muted);
}

.card--today {
  border-left-width: 6px;
  box-shadow: 0 0 0 2px var(--card-color, var(--accent)), var(--shadow-lg);
}

.card__header {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.card__icon { font-size: 1.5rem; }
.card__name {
  flex: 1;
  font-weight: 600;
  font-size: .95rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card__actions { display: flex; gap: .25rem; }

.card__days {
  display: flex;
  align-items: baseline;
  gap: .4rem;
}

.card__days-num {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--card-color, var(--accent));
}

.card__today-label {
  font-size: 2rem;
  font-weight: 800;
  color: var(--card-color, var(--accent));
}

.card__days-label {
  font-size: .9rem;
  color: var(--text-muted);
}

.card__live {
  font-size: .8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.card__date {
  font-size: .8rem;
  color: var(--text-muted);
}

/* ── Empty state ───────────────────────────────────────────────────────────── */

.empty-msg {
  text-align: center;
  color: var(--text-muted);
  padding: 4rem 1rem;
  font-size: 1.1rem;
}

/* ── Modal ─────────────────────────────────────────────────────────────────── */

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal--open .modal-backdrop,
.modal-backdrop.modal--open {
  display: flex;
}

/* When #modal has class modal--open, show its backdrop child */
#modal.modal--open > .modal-backdrop { display: flex; }

.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.field { display: flex; flex-direction: column; gap: .35rem; }

.field label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.field input[type="text"],
.field input[type="date"] {
  padding: .6rem .75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font: inherit;
  font-size: .95rem;
  transition: border-color var(--transition);
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
}

.field input[type="color"] {
  width: 3rem; height: 2rem;
  padding: 0 .2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  cursor: pointer;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field-error {
  font-size: .8rem;
  color: var(--danger);
  min-height: 1rem;
}

/* Presets */
.presets-label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: .4rem;
}

.preset-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.preset-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .35rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
  font-size: .8rem;
  transition: background var(--transition), border-color var(--transition);
}

.preset-btn:hover { background: var(--border); border-color: var(--accent); }
.preset-icon { font-size: 1rem; }

/* Modal footer */
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
  padding-top: .5rem;
}

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .app-title { font-size: 1.05rem; }
  .cards-grid { grid-template-columns: 1fr; }
  .card__days-num { font-size: 2.8rem; }
  main { padding: 1.25rem 1rem; }
}