@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Barlow+Condensed:wght@300;400;600;700&family=Barlow:wght@300;400;500&display=swap');

/* ── Root Variables ─────────────────────────────────────────────────────────── */
:root {
  --bg-primary:   #0d0f14;
  --bg-secondary: #13161f;
  --bg-card:      #181c27;
  --bg-elevated:  #1f2333;
  --border:       #2a2f42;
  --border-light: #353d56;

  --text-primary:   #e8eaf2;
  --text-secondary: #8892b0;
  --text-muted:     #4a5270;

  --accent-amber:  #f59e0b;
  --accent-green:  #10b981;
  --accent-red:    #ef4444;
  --accent-blue:   #60a5fa;
  --accent-purple: #a78bfa;

  --font-mono:    'IBM Plex Mono', monospace;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 1.5rem;
}

.app-header .brand {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  line-height: 1;
}

.app-header .brand span {
  color: var(--accent-amber);
}

.app-header .subtitle {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* ── Main Layout ────────────────────────────────────────────────────────────── */
.main-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

/* ── Stats Bar ──────────────────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.stat-pill .count {
  font-size: 1rem;
  font-weight: 600;
}

.stat-pill.confirm  { border-left: 3px solid var(--accent-amber); }
.stat-pill.remind   { border-left: 3px solid var(--accent-red);   }
.stat-pill.upcoming { border-left: 3px solid var(--accent-blue);  }

.stat-pill.confirm .count  { color: var(--accent-amber); }
.stat-pill.remind .count   { color: var(--accent-red);   }
.stat-pill.upcoming .count { color: var(--accent-blue);  }

/* ── Add Speaker Button ─────────────────────────────────────────────────────── */
.btn-add {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-amber);
  color: #0d0f14;
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-add:hover {
  background: #fbbf24;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.35);
}

/* ── Section Label ──────────────────────────────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.4rem 0;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
}

/* ── Speaker Card ───────────────────────────────────────────────────────────── */
.speaker-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0);    }
}

.speaker-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

/* Status indicator strip on left */
.speaker-card.status-upcoming      { border-left: 3px solid var(--border-light);   }
.speaker-card.status-need-confirm  { border-left: 3px solid var(--accent-amber);   }
.speaker-card.status-confirmed     { border-left: 3px solid var(--accent-green);   }
.speaker-card.status-need-remind   { border-left: 3px solid var(--accent-red);     }
.speaker-card.status-reminded      { border-left: 3px solid var(--accent-purple);  }
.speaker-card.status-circuit       { border-left: 3px solid var(--accent-blue);    }

.speaker-card .card-body {
  padding: 1rem 1.1rem;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.speaker-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.1;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge-co {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(96, 165, 250, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 4px;
  padding: 0.15rem 0.45rem;
}

.speech-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.days-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
  margin-left: 0.4rem;
}

.days-badge.far     { background: rgba(72,85,128,0.25); color: var(--text-muted); }
.days-badge.soon    { background: rgba(245,158,11,0.18); color: var(--accent-amber); }
.days-badge.urgent  { background: rgba(239,68,68,0.18);  color: var(--accent-red);   }
.days-badge.today   { background: rgba(16,185,129,0.18); color: var(--accent-green); }

.card-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.7rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.meta-item svg { opacity: 0.6; }

.notes-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.6rem;
  padding: 0.4rem 0.65rem;
  background: rgba(255,255,255,0.03);
  border-radius: 5px;
  border-left: 2px solid var(--border-light);
}

/* ── Card Actions ───────────────────────────────────────────────────────────── */
.card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid var(--border);
  padding: 0.65rem 1.1rem;
  background: rgba(0,0,0,0.15);
}

/* Checkbox toggles */
.toggle-group {
  display: flex;
  gap: 0.75rem;
  flex: 1;
  flex-wrap: wrap;
}

.toggle-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
}

.toggle-item input[type="checkbox"] { display: none; }

.toggle-box {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1.5px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}

.toggle-item.confirm .toggle-box  { border-color: var(--accent-amber); }
.toggle-item.remind  .toggle-box  { border-color: var(--accent-red);   }

.toggle-item input:checked + .toggle-box {
  background: var(--accent-green);
  border-color: var(--accent-green);
}

.toggle-item input:checked + .toggle-box::after {
  content: '';
  display: block;
  width: 9px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
}

.toggle-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.status-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-weight: 500;
}

.status-tag.need-confirm { background: rgba(245,158,11,0.18); color: var(--accent-amber); }
.status-tag.need-remind  { background: rgba(239,68,68,0.18);  color: var(--accent-red);   }
.status-tag.done-confirm { background: rgba(16,185,129,0.12); color: var(--accent-green); }
.status-tag.done-remind  { background: rgba(167,139,250,0.15); color: var(--accent-purple);}
.status-tag.circuit-skip { background: rgba(96,165,250,0.12); color: var(--accent-blue);  }

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.btn-icon:hover { background: var(--bg-elevated); color: var(--text-primary); }
.btn-icon.edit:hover  { border-color: var(--accent-blue);  color: var(--accent-blue);  }
.btn-icon.delete:hover { border-color: var(--accent-red);  color: var(--accent-red);   }

/* ── Empty State ────────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.35;
}

.empty-state p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Modal ──────────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open { display: flex; }

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.94) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0);       }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.3rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.2s;
}

.modal-close:hover { background: var(--bg-elevated); color: var(--text-primary); }

.modal-body { padding: 1.3rem; }

/* ── Form Styles ────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; }

.form-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 0.4rem;
}

.form-control {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.6rem 0.85rem;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245,158,11,0.12);
}

.form-control::placeholder { color: var(--text-muted); }

/* Circuit Overseer toggle */
.co-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.co-toggle:hover { border-color: var(--accent-blue); }
.co-toggle input { display: none; }

.co-toggle .co-switch {
  width: 38px;
  height: 20px;
  background: var(--border-light);
  border-radius: 20px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.co-toggle .co-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.co-toggle input:checked ~ .co-switch {
  background: var(--accent-blue);
}

.co-toggle input:checked ~ .co-switch::after {
  transform: translateX(18px);
}

.co-toggle-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.modal-footer {
  display: flex;
  gap: 0.65rem;
  justify-content: flex-end;
  padding: 0.9rem 1.3rem;
  border-top: 1px solid var(--border);
}

.btn-cancel {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cancel:hover { background: var(--bg-elevated); color: var(--text-primary); }

.btn-save {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--accent-amber);
  border: none;
  color: #0d0f14;
  border-radius: 6px;
  padding: 0.5rem 1.3rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-save:hover {
  background: #fbbf24;
  box-shadow: 0 4px 16px rgba(245,158,11,0.3);
}

/* ── Notification Banner ────────────────────────────────────────────────────── */
.notif-banner {
  position: fixed;
  top: 80px;
  right: 1rem;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 340px;
}

.notif-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: notifIn 0.3s ease;
}

@keyframes notifIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0);    }
}

.notif-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.notif-content { flex: 1; }
.notif-title { font-family: var(--font-display); font-size: 0.9rem; font-weight: 600; }
.notif-body  { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }

.notif-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 0.8rem;
  flex-shrink: 0;
  line-height: 1;
}

/* ── Notification Permission Banner ─────────────────────────────────────────── */
#notif-permission-banner {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

#notif-permission-banner p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: 0;
  flex: 1;
}

.btn-notif-enable {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(245,158,11,0.2);
  border: 1px solid var(--accent-amber);
  color: var(--accent-amber);
  border-radius: 5px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-notif-enable:hover { background: rgba(245,158,11,0.35); }

/* ── Filter Row ─────────────────────────────────────────────────────────────── */
.filter-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
  align-items: center;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 5px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: all 0.18s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--bg-elevated);
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* ── Confirm Delete Dialog ──────────────────────────────────────────────────── */
.delete-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.delete-overlay.open { display: flex; }

.delete-box {
  background: var(--bg-secondary);
  border: 1px solid var(--accent-red);
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 360px;
  width: 100%;
  text-align: center;
  animation: modalIn 0.22s ease;
}

.delete-box h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-red);
  margin-bottom: 0.5rem;
}

.delete-box p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.btn-confirm-delete {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--accent-red);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1.3rem;
  cursor: pointer;
  margin-right: 0.5rem;
  transition: all 0.2s;
}

.btn-confirm-delete:hover { background: #f87171; }

/* ── Update Banner ───────────────────────────────────────────────────────────── */
.update-banner {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--accent-green);
  border-radius: 12px;
  padding: 0.7rem 1rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.55), 0 0 0 1px rgba(16,185,129,0.15);
  white-space: nowrap;
  animation: notifIn 0.3s ease;
  max-width: calc(100vw - 2rem);
}

.update-banner-icon { font-size: 1rem; flex-shrink: 0; }

.update-banner-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  flex: 1;
}

.btn-update-apply {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-green);
  color: #0d0f14;
  border: none;
  border-radius: 6px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.btn-update-apply:hover {
  background: #34d399;
  box-shadow: 0 3px 14px rgba(16,185,129,0.35);
}

.update-banner-dismiss {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0;
  flex-shrink: 0;
  line-height: 1;
  transition: color 0.2s;
}

.update-banner-dismiss:hover { color: var(--text-primary); }

/* ── WhatsApp Buttons ────────────────────────────────────────────────────────── */
.wa-group {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn-wa {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  border: 1px solid;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-wa-confirm {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.45);
  color: var(--accent-amber);
}

.btn-wa-confirm:hover {
  background: rgba(245, 158, 11, 0.22);
  border-color: var(--accent-amber);
  box-shadow: 0 2px 12px rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
}

.btn-wa-remind {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.45);
  color: var(--accent-red);
}

.btn-wa-remind:hover {
  background: rgba(239, 68, 68, 0.22);
  border-color: var(--accent-red);
  box-shadow: 0 2px 12px rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
}

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .app-header { padding: 0.75rem 1rem; }
  .app-header .brand { font-size: 1.3rem; }
  .main-content { padding: 1rem 0.75rem 4rem; }
  .card-top { flex-direction: column; gap: 0.3rem; }
  .toggle-group { gap: 0.5rem; }
}