/* ══════════ Base ══════════ */
:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --ink: #0f172a;
  --ink-soft: #64748b;
  --line: #e2e8f0;
  --accent: #f97316;
  --accent-dark: #ea580c;
  --accent-soft: #fff7ed;
  --accent-border: #fed7aa;
  --accent-ink: #431407;
  --topbar-bg: #7c2d12;
  --topbar-sub: #fdba74;
  --green: #16a34a;
  --green-soft: #f0fdf4;
  --whatsapp: #25d366;
  --whatsapp-dark: #1eb455;
  --danger: #dc2626;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 16px rgba(15, 23, 42, 0.06);
}

:root[data-theme="blue"] {
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-border: #bfdbfe;
  --accent-ink: #172554;
  --topbar-bg: #1e3a8a;
  --topbar-sub: #93c5fd;
}

:root[data-theme="green"] {
  --accent: #16a34a;
  --accent-dark: #15803d;
  --accent-soft: #f0fdf4;
  --accent-border: #bbf7d0;
  --accent-ink: #052e16;
  --topbar-bg: #14532d;
  --topbar-sub: #86efac;
}

:root[data-theme="sky"] {
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --accent-soft: #f0f9ff;
  --accent-border: #bae6fd;
  --accent-ink: #082f49;
  --topbar-bg: #0c4a6e;
  --topbar-sub: #7dd3fc;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

h1, h2 { margin: 0; }

button { font: inherit; cursor: pointer; }

input[type="text"], input[type="tel"], input[type="password"],
input[type="number"], input[type="date"], input[type="month"] {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  font: inherit;
  background: #fff;
  color: var(--ink);
  appearance: none;
  -webkit-appearance: none;
  min-height: 48px;
}
input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-border);
}

/* ══════════ Login ══════════ */
.login-screen {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, #0f172a 0%, #1e293b 55%, var(--accent-dark) 160%);
}
.login-card {
  background: var(--card);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 36px 28px;
  width: 100%;
  max-width: 360px;
  text-align: center;
}
.login-logo { font-size: 56px; line-height: 1; margin-bottom: 12px; }
.login-logo-img {
  width: 76px;
  height: 76px;
  border-radius: 20px;
  margin: 0 auto 14px;
  display: block;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.22);
}
.login-card h1 { font-size: 26px; letter-spacing: -0.02em; }
.login-sub { color: var(--ink-soft); margin: 8px 0 22px; line-height: 1.5; }
.login-card form { display: flex; flex-direction: column; gap: 10px; }
.login-card form .btn { margin-top: 4px; }
.login-help {
  margin: 18px 0 0;
  font-size: 12.5px;
  color: #94a3b8;
  line-height: 1.5;
}

/* ══════════ Layout ══════════ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--topbar-bg);
  color: #fff;
  padding-top: env(safe-area-inset-top);
  transition: background 0.25s ease;
}
.topbar-inner {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
}
.topbar-logo { font-size: 26px; }
.topbar-text { display: flex; flex-direction: column; min-width: 0; }
.topbar-brand {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-view {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--topbar-sub);
  margin-top: 1px;
}

.content {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px calc(96px + env(safe-area-inset-bottom));
}

.view { display: flex; flex-direction: column; gap: 14px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.field { margin-bottom: 14px; }
.field-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.muted { font-weight: 400; color: #94a3b8; }
.hint { color: var(--ink-soft); font-size: 14px; margin: 0; padding: 0 4px; }
.empty-state {
  text-align: center;
  color: var(--ink-soft);
  padding: 40px 16px;
  line-height: 1.6;
}
.form-error { color: var(--danger); font-size: 14px; margin: 10px 0; }
.form-success { color: var(--green); font-weight: 600; text-align: center; margin: 12px 0 0; }
.check-label { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.check-label input { width: 20px; height: 20px; accent-color: var(--accent); }

/* ══════════ Buttons ══════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 16px;
  font-weight: 700;
  min-height: 50px;
  transition: transform 0.06s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn-block { width: 100%; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-whatsapp { background: var(--whatsapp); color: #fff; }
.btn-whatsapp:hover { background: var(--whatsapp-dark); }
.btn-ghost { background: transparent; color: var(--ink-soft); }
.btn-ghost:hover { background: var(--line); }
.btn-danger-ghost { background: transparent; color: var(--danger); margin-right: auto; }
.btn-danger-ghost:hover { background: #fef2f2; }
.btn-logout { color: var(--danger); margin-top: 4px; }
.btn-small {
  padding: 8px 14px;
  min-height: 38px;
  font-size: 14px;
  border-radius: 10px;
}

/* ══════════ Asistencia ══════════ */
.attendance-list { display: flex; flex-direction: column; gap: 10px; }
.attend-card {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  background: var(--card);
  border: 2px solid transparent;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.attend-check {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 2px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: 17px;
  font-weight: 800;
  transition: all 0.15s ease;
}
.attend-card.present {
  border-color: var(--green);
  background: var(--green-soft);
}
.attend-card.present .attend-check {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

/* ══════════ Alumnos ══════════ */
.students-list { display: flex; flex-direction: column; gap: 10px; }
.student-card {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}
.student-card.inactive { opacity: 0.55; }
.student-info { min-width: 0; }
.student-name { font-weight: 700; font-size: 16.5px; }
.student-meta {
  color: var(--ink-soft);
  font-size: 13.5px;
  margin-top: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.badge-inactive {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-soft);
  background: var(--line);
  border-radius: 6px;
  padding: 2px 7px;
  margin-left: 6px;
  vertical-align: 2px;
}

/* ══════════ Resumen ══════════ */
.summary-totals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.total-tile {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.total-tile .tile-label { font-size: 12.5px; font-weight: 600; color: var(--ink-soft); }
.total-tile .tile-value { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; margin-top: 2px; }
.total-tile.money .tile-value { color: var(--accent-dark); }

.summary-list { display: flex; flex-direction: column; gap: 10px; }
.summary-row {
  display: flex;
  align-items: center;
  gap: 12px 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}
.summary-info { min-width: 0; flex: 1 1 190px; }
.summary-kid { font-weight: 700; font-size: 16.5px; }
.summary-detail { color: var(--ink-soft); font-size: 13.5px; margin-top: 3px; }
.summary-price { font-weight: 800; color: var(--accent-dark); }
.sent-tag {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}
.summary-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; margin-left: auto; }

/* ══════════ Tab bar ══════════ */
.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  background: var(--card);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: none;
  border: none;
  padding: 10px 4px 8px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-soft);
}
.tab-icon { font-size: 20px; line-height: 1; }
.tab.active { color: var(--accent-dark); }

/* ══════════ Modales ══════════ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
}
.modal {
  background: var(--card);
  border-radius: 20px;
  padding: 24px 20px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.3);
  animation: slide-up 0.22s ease;
}
@keyframes slide-up {
  from { transform: translateY(24px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.modal h2 { font-size: 20px; margin-bottom: 16px; }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* Cola de envío */
.send-progress { color: var(--ink-soft); font-size: 14px; margin: 0 0 12px; }
.send-recipient {
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 16px;
}
.send-to { font-weight: 800; margin: 0 0 8px; }
.send-preview {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--accent-ink);
  white-space: pre-wrap;
}

/* Selector de color del tema */
.theme-picker { display: flex; gap: 14px; }
.swatch {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid transparent;
  background: var(--sw);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}
.swatch:active { transform: scale(0.92); }
.swatch.selected {
  border-color: #fff;
  box-shadow: 0 0 0 3px var(--ink);
}

@media (min-width: 480px) {
  .modal-backdrop { align-items: center; }
}

/* ══════════ Estadísticas ══════════ */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 15px 16px;
}
.stat-card-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
}
.stat-card-value {
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 3px 0 6px;
  color: var(--accent-dark);
}
.stat-card-foot {
  font-size: 11.5px;
  color: #94a3b8;
  margin-top: 6px;
}
.chip {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
}
.chip-up { background: var(--green-soft); color: var(--green); }
.chip-down { background: #fef2f2; color: var(--danger); }
.chip-flat, .chip-new { background: var(--line); color: var(--ink-soft); }

.chart-card { padding: 16px 14px 12px; }
.chart-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 150px;
}
.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  gap: 4px;
  min-width: 0;
}
.bar-value {
  font-size: 9.5px;
  font-weight: 700;
  color: var(--ink-soft);
  white-space: nowrap;
}
.bar {
  width: 100%;
  max-width: 34px;
  background: var(--line);
  border-radius: 6px 6px 3px 3px;
  transition: height 0.35s ease;
}
.bar-current { background: var(--accent); }
.bar-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: capitalize;
}

.stats-extra { padding: 4px 16px; }
.extra-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  font-size: 14.5px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}
.extra-row:last-child { border-bottom: none; }
.extra-row strong { color: var(--ink); text-align: right; }

/* ══════════ Tutorial ══════════ */
.tutorial-modal { text-align: center; }
.tutorial-icon { font-size: 52px; line-height: 1; margin-bottom: 10px; }
.tutorial-modal h2 { margin-bottom: 10px; }
.tutorial-text {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
  text-align: left;
}
.tutorial-dots {
  display: flex;
  justify-content: center;
  gap: 7px;
  margin-top: 20px;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.2s ease, transform 0.2s ease;
}
.dot-on { background: var(--accent); transform: scale(1.25); }
.tutorial-actions { justify-content: space-between; }

.card-heading {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 14px;
}

/* ══════════════════════════════════════════════════════════════════════════
   Panel de dueño (admin.html)
   ══════════════════════════════════════════════════════════════════════════ */
.admin .topbar { background: #0f172a; }
.admin .topbar-view { color: #94a3b8; }
.admin .login-screen { background: linear-gradient(160deg, #0f172a 0%, #1e293b 60%, #334155 140%); }

.admin-topbar { gap: 10px 12px; flex-wrap: wrap; }
.admin-topbar .topbar-text { flex: 1 1 140px; min-width: 0; }
.month-input {
  width: auto;
  flex-shrink: 0;
  min-height: 38px;
  padding: 6px 10px;
  font-size: 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  color-scheme: dark;
}

.admin-content { max-width: 860px; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.total-tile.good .tile-value { color: var(--green); }
.total-tile.warn .tile-value { color: var(--danger); }

.admin-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.admin-actions .btn-logout { margin-left: auto; margin-top: 0; }

.coach-list { display: flex; flex-direction: column; gap: 12px; }

.coach-card {
  border-left: 5px solid var(--accent);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.coach-card[data-theme="blue"] { border-left-color: #2563eb; }
.coach-card[data-theme="green"] { border-left-color: #16a34a; }
.coach-card[data-theme="sky"] { border-left-color: #0ea5e9; }
.coach-card.inactive { opacity: 0.55; }

.coach-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.coach-name { font-weight: 800; font-size: 17px; }
.coach-url {
  display: inline-block;
  margin-top: 2px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  word-break: break-all;
}
.coach-url:hover { text-decoration: underline; }

.plan-badge {
  flex-shrink: 0;
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--line);
  color: var(--ink-soft);
}
.plan-badge.plan-percent,
.plan-badge.plan-perclass { background: #ecfdf5; color: #047857; }
.plan-badge.plan-monthly { background: #eff6ff; color: #1d4ed8; }
.plan-badge.plan-onetime { background: #fff7ed; color: #c2410c; }
.plan-badge.plan-trial { background: #f5f3ff; color: #6d28d9; }

.coach-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-label { font-size: 11.5px; font-weight: 600; color: var(--ink-soft); }
.stat-value { font-size: 17px; font-weight: 800; letter-spacing: -0.01em; }

.coach-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.coach-actions { display: flex; gap: 6px; margin-left: auto; }
.pending-tag { color: var(--danger); font-size: 13px; font-weight: 700; }
.muted-tag { color: var(--ink-soft) !important; }

.field-hint {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--accent-dark);
  word-break: break-all;
}

select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  font: inherit;
  background: #fff;
  color: var(--ink);
  min-height: 48px;
}
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-border);
}

.modal-tall { max-height: 88vh; overflow-y: auto; }

.pin-box {
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  padding: 22px 14px;
  text-align: center;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 4px;
  word-break: break-all;
  color: var(--accent-ink);
  user-select: all;
}
.pin-warn {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--ink-soft);
  text-align: center;
}

.hist-list { display: flex; flex-direction: column; gap: 8px; max-height: 55vh; overflow-y: auto; }
.hist-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: 12px;
}
.hist-academy { font-weight: 700; font-size: 14.5px; }
.hist-meta { font-size: 12.5px; color: var(--ink-soft); margin-top: 2px; }
.hist-amount { font-weight: 800; color: var(--green); white-space: nowrap; }