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

/* ═══════════════════════════════════════════════════════════════ */
/* KCHAKA — RECEPCIÓN — Nothing Design                           */
/* ═══════════════════════════════════════════════════════════════ */

:root {
  /* Brand */
  --orange: #FF6B00;
  --orange-subtle: rgba(255, 107, 0, 0.12);

  /* Nothing Design tokens — Dark */
  --black:           #000000;
  --surface:         #111111;
  --surface-raised:  #1A1A1A;
  --border:          #222222;
  --border-visible:  #333333;
  --text-disabled:   #666666;
  --text-secondary:  #999999;
  --text-primary:    #E8E8E8;
  --text-display:    #FFFFFF;

  /* Status */
  --green:   #4A9E5C;
  --green-subtle: rgba(74, 158, 92, 0.12);
  --warning: #D4A843;
  --warning-subtle: rgba(212, 168, 67, 0.12);
  --red:     #D71921;
  --red-subtle: rgba(215, 25, 33, 0.12);
  --blue:    #5B9BF6;
  --blue-subtle: rgba(91, 155, 246, 0.12);

  /* Aliases for backward compat */
  --bg:         var(--black);
  --bg2:        var(--surface);
  --card:       var(--surface);
  --card-solid: var(--surface-raised);
  --text:       var(--text-primary);
  --muted:      var(--text-secondary);
  --accent:     var(--orange);

  /* Legacy aliases — referenced by inline styles */
  --text-muted:  var(--text-secondary);
  --surface2:    var(--surface-raised);
  --shadow-md:   none;
  --glow-orange: none;
  --glow-green:  none;

  /* Motion */
  --transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);

  /* Radius */
  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   12px;
  --radius-full: 999px;
}

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

html {
  scroll-behavior: smooth;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-visible); border-radius: 3px; }

body {
  background: var(--black);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ═══════════════════════════════════════════════════════════════ */
/* HEADER                                                         */
/* ═══════════════════════════════════════════════════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--black);
  border-bottom: 1px solid var(--border);
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-logo img {
  height: 32px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-sede {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.header-user {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.btn-logout {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-visible);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.btn-logout:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════════ */
/* SUMMARY BAR                                                    */
/* ═══════════════════════════════════════════════════════════════ */
.summary-bar {
  background: var(--black);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  overflow-x: auto;
  scrollbar-width: none;
}

.summary-bar::-webkit-scrollbar { display: none; }

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-width: fit-content;
}

.summary-item .label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.summary-item .value {
  font-family: 'Space Mono', monospace;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-display);
}

.summary-divider {
  width: 1px;
  height: 28px;
  background: var(--border-visible);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════ */
/* TABS                                                           */
/* ═══════════════════════════════════════════════════════════════ */
.tabs {
  background: var(--black);
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 16px;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-disabled);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 14px 16px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn.active {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.tab-btn svg {
  width: 15px;
  height: 15px;
  opacity: 0.6;
}

.tab-btn.active svg {
  opacity: 1;
}

/* ── Tab content panels ── */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeTabIn 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
}

@keyframes fadeTabIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ═══════════════════════════════════════════════════════════════ */
/* MAIN CONTENT                                                   */
/* ═══════════════════════════════════════════════════════════════ */
.main {
  padding: 16px 20px;
  max-width: 680px;
  margin: 0 auto;
}

/* ── Date Picker ── */
.date-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.today-btn {
  background: transparent;
  border: 1px solid var(--border-visible);
  color: var(--text-secondary);
  height: 32px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition), border-color var(--transition);
  font-size: 11px;
  font-family: 'Space Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 14px;
  white-space: nowrap;
}
.today-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.date-nav-btn {
  background: transparent;
  border: 1px solid var(--border-visible);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  line-height: 1;
  transition: color var(--transition), border-color var(--transition);
  padding: 0;
  flex-shrink: 0;
}
.date-nav-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.date-display {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  min-width: 140px;
  text-align: center;
  padding: 0 4px;
  user-select: none;
}

/* ═══════════════════════════════════════════════════════════════ */
/* CLASS CARDS                                                    */
/* ═══════════════════════════════════════════════════════════════ */
.class-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.class-card:hover {
  border-color: var(--border-visible);
}

.class-card.expanded {
  border-color: var(--border-visible);
}

.class-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
}

.class-time {
  font-family: 'Space Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-display);
  min-width: 60px;
  flex-shrink: 0;
}

.class-info {
  flex: 1;
  min-width: 0;
}

.class-type {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.class-meta {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-top: 2px;
}

.class-stats {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.class-count {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary);
}

.class-count .num {
  color: var(--text-primary);
  font-weight: 700;
}

.class-spots {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  flex-shrink: 0;
  gap: 2px;
}

.class-cobrar-badge {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--orange, #FF6B00);
  text-align: right;
  margin-top: 4px;
  letter-spacing: 0.03em;
}

.clase-mini-resumen {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0 12px;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.clase-mini-total {
  color: var(--text-secondary);
}

.clase-mini-sep {
  color: var(--text-disabled);
}

.clase-mini-cobrar {
  color: var(--orange, #FF6B00);
  font-weight: 700;
}

.clase-mini-sinasis {
  color: var(--text-disabled);
}

.chevron {
  color: var(--text-disabled);
  transition: transform var(--transition), color var(--transition);
  flex-shrink: 0;
}

.class-card.expanded .chevron {
  transform: rotate(180deg);
  color: var(--text-secondary);
}

.class-body {
  display: none;
  padding: 0 16px 14px;
  border-top: 1px solid var(--border);
}
.class-card.expanded .class-body {
  display: block;
}

/* ── Profesor panel ── */
.prof-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.prof-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-disabled);
  flex-shrink: 0;
}

.prof-dot.confirmed {
  background: var(--green);
}

.prof-dot.alert {
  background: var(--red);
  animation: pulse 1s infinite;
}

.prof-name {
  font-size: 13px;
  color: var(--text-secondary);
  flex: 1;
}

.prof-name strong {
  color: var(--text-primary);
}

/* ── Profesor panel (full) ── */
.profesor-panel {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 13px;
}

/* ═══════════════════════════════════════════════════════════════ */
/* PERSON ROWS                                                    */
/* ═══════════════════════════════════════════════════════════════ */
.person-list {
  padding-top: 4px;
}

.person-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.person-row:last-child {
  border-bottom: none;
}

.person-info {
  flex: 1;
  min-width: 0;
}

.person-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.person-plan {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-top: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.person-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.attendance-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* ── Asistencia button ── */
.btn-asistencia {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border-visible);
  background: transparent;
  color: var(--text-disabled);
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}

.btn-asistencia:hover {
  border-color: var(--green);
  color: var(--green);
}

.btn-asistencia.checked {
  background: var(--green);
  border-color: var(--green);
  color: #000;
}

.btn-asistencia.deuda {
  border-color: var(--red);
  color: var(--red);
  animation: pulse 1.5s infinite;
}

.btn-asistencia.deuda.checked {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

/* ── Cobrar button ── */
.btn-cobrar {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-visible);
  background: transparent;
  color: var(--text-secondary);
  cursor: default;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  white-space: nowrap;
}

/* Estado: pagado con plan activo — muted, settled */
.btn-cobrar.pagado.plan-activo {
  border-color: rgba(100, 160, 255, 0.35);
  color: #6FA3D8;
  background: rgba(100, 160, 255, 0.07);
  cursor: default;
}

/* Estado: pagado sin plan (clase suelta cobrada) — green settled */
.btn-cobrar.pagado:not(.plan-activo):not(.plan-deuda) {
  border-color: rgba(0, 232, 122, 0.35);
  color: var(--green);
  background: rgba(0, 232, 122, 0.07);
  cursor: default;
}

/* Estado: pendiente de cobro — orange, acción requerida */
.btn-cobrar.pendiente {
  border-color: var(--orange, #FF6B00);
  color: var(--orange, #FF6B00);
  background: rgba(255, 107, 0, 0.08);
  cursor: pointer;
}

.btn-cobrar.pendiente:hover {
  background: rgba(255, 107, 0, 0.18);
}

.btn-cobrar.tiene-plan {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-cobrar.tiene-plan:hover {
  background: var(--blue-subtle);
}

.btn-cobrar.debe {
  border-color: var(--red);
  color: var(--red);
  animation: pulse 1.5s infinite;
}

.btn-cobrar.debe:hover {
  background: var(--red-subtle);
}

/* ── Walk-in button ── */
.btn-walkin {
  width: 100%;
  margin-top: 12px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px dashed var(--border-visible);
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.btn-walkin:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════════ */
/* ACTION BUTTONS (Caja / Planes tabs)                           */
/* ═══════════════════════════════════════════════════════════════ */
.action-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin-bottom: 20px;
}

.action-btn {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-visible);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.action-btn:hover {
  border-color: var(--text-secondary);
  background: var(--surface-raised);
}

.action-btn .icon {
  font-size: 20px;
  color: var(--text-secondary);
}

.action-btn .label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.action-btn .title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.action-btn.plan {
  border-color: var(--border-visible);
}

/* ═══════════════════════════════════════════════════════════════ */
/* BUTTONS                                                        */
/* ═══════════════════════════════════════════════════════════════ */
.btn-primary {
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--text-display);
  color: var(--black);
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: opacity var(--transition);
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-visible);
  background: transparent;
  color: var(--text-primary);
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
}

.btn-success {
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--green);
  background: var(--green-subtle);
  color: var(--green);
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-success:hover {
  background: rgba(74, 158, 92, 0.2);
}

.btn-danger {
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--red);
  background: transparent;
  color: var(--red);
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-danger:hover {
  background: var(--red-subtle);
}

/* ═══════════════════════════════════════════════════════════════ */
/* SEARCH INPUT                                                   */
/* ═══════════════════════════════════════════════════════════════ */
.search-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-visible);
  background: var(--surface);
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition);
}

.search-input::placeholder {
  color: var(--text-disabled);
}

.search-input:focus {
  border-color: var(--text-secondary);
}

/* ── Search results ── */
.search-result {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
}

.search-result:hover {
  background: var(--surface-raised);
}

.search-result:last-child {
  border-bottom: none;
}

.search-result-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.search-result-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.search-result-meta {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-top: 5px;
}

.search-result-no-plan {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-disabled, #555);
  border: 1px solid #333;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.badge-menor {
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: rgba(0, 232, 122, 0.12);
  color: var(--green);
  padding: 2px 5px;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 6px;
}

/* ═══════════════════════════════════════════════════════════════ */
/* FORM INPUTS                                                    */
/* ═══════════════════════════════════════════════════════════════ */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input,
.input,
.form-select {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border-visible);
  background: var(--surface);
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
}

.form-input::placeholder,
.input::placeholder {
  color: var(--text-disabled);
}

.form-input:focus,
.input:focus,
.form-select:focus {
  border-color: var(--text-secondary);
}

.form-input.error,
.input.error,
.form-select.error {
  border-color: var(--red);
}

.form-error {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  color: var(--red);
  margin-top: 4px;
}

/* ═══════════════════════════════════════════════════════════════ */
/* MODAL                                                          */
/* ═══════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border-visible);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-display);
}

.modal-close {
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  transition: color var(--transition);
}

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

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}

/* ═══════════════════════════════════════════════════════════════ */
/* CAJA SUMMARY & CARDS                                          */
/* ═══════════════════════════════════════════════════════════════ */
.caja-summary {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.caja-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  flex: 1 1 140px;
  min-width: 140px;
}

.caja-card .label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.caja-card .value {
  font-family: 'Space Mono', monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-display);
}

.caja-card .value.positive { color: var(--green); }
.caja-card .value.negative { color: var(--red); }
.caja-card .value.orange { color: var(--orange); }

/* ═══════════════════════════════════════════════════════════════ */
/* PLAN OPTIONS (selector)                                       */
/* ═══════════════════════════════════════════════════════════════ */
.plan-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.plan-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-visible);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}

.plan-option:hover {
  border-color: var(--text-secondary);
  background: var(--surface-raised);
}

.plan-option.selected {
  border-color: var(--orange);
  background: var(--orange-subtle);
}

.plan-option-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.plan-option-price {
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-display);
}

.plan-option-meta {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ── Method buttons (payment) ── */
.method-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.method-btn {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-visible);
  background: transparent;
  color: var(--text-primary);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.method-btn:hover {
  border-color: var(--text-secondary);
}

.method-btn.selected {
  border-color: var(--orange);
  background: var(--orange-subtle);
  color: var(--orange);
}

/* ═══════════════════════════════════════════════════════════════ */
/* STATUS BADGES                                                  */
/* ═══════════════════════════════════════════════════════════════ */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  border: 1px solid transparent;
}

.status-badge.active {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-subtle);
}

.status-badge.expired,
.status-badge.inactive {
  border-color: var(--border-visible);
  color: var(--text-disabled);
}

.status-badge.debt {
  border-color: var(--red);
  color: var(--red);
  background: var(--red-subtle);
}

.status-badge.warning {
  border-color: var(--warning);
  color: var(--warning);
  background: var(--warning-subtle);
}

/* Sede badge */
.sede-badge {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-visible);
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════════ */
/* DATA TABLE                                                     */
/* ═══════════════════════════════════════════════════════════════ */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-visible);
}

.data-table td {
  font-size: 13px;
  color: var(--text-primary);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table td.mono {
  font-family: 'Space Mono', monospace;
}

.data-table td.num {
  font-family: 'Space Mono', monospace;
  text-align: right;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr.active-row {
  background: var(--surface-raised);
  border-left: 2px solid var(--orange);
}

/* ═══════════════════════════════════════════════════════════════ */
/* LOADING / SPINNER                                              */
/* ═══════════════════════════════════════════════════════════════ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px;
  color: var(--text-secondary);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-visible);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spinner 0.6s linear infinite;
}

.btn-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spinner 0.6s linear infinite;
}

/* ═══════════════════════════════════════════════════════════════ */
/* BANNERS                                                        */
/* ═══════════════════════════════════════════════════════════════ */
.banner {
  padding: 10px 16px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.banner.warning {
  border: 1px solid var(--warning);
  background: var(--warning-subtle);
  color: var(--warning);
}

.banner.error {
  border: 1px solid var(--red);
  background: var(--red-subtle);
  color: var(--red);
}

.banner.success {
  border: 1px solid var(--green);
  background: var(--green-subtle);
  color: var(--green);
}

.banner.info {
  border: 1px solid var(--border-visible);
  background: var(--surface-raised);
  color: var(--text-secondary);
}

.banner-label {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════════ */
/* WAITLIST                                                       */
/* ═══════════════════════════════════════════════════════════════ */
.waitlist-header {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--warning);
  font-weight: 700;
  margin-bottom: 10px;
}

.waitlist-person {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.waitlist-person:last-child {
  border-bottom: none;
}

.btn-promover {
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  cursor: pointer;
  transition: background var(--transition);
}

.btn-promover:hover {
  background: var(--green-subtle);
}

/* ═══════════════════════════════════════════════════════════════ */
/* PLAN CARDS (Planes tab)                                       */
/* ═══════════════════════════════════════════════════════════════ */
.plan-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 8px;
  transition: border-color var(--transition);
}

.plan-card:hover {
  border-color: var(--border-visible);
}

.plan-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.plan-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.plan-card-type {
  font-family: 'Space Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.plan-card-details {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-secondary);
}

.plan-card-detail {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'Space Mono', monospace;
  font-size: 11px;
}

.plan-progress {
  width: 100%;
  height: 3px;
  background: var(--border-visible);
  border-radius: 0;
  margin-top: 12px;
  overflow: hidden;
}

.plan-progress-fill {
  height: 100%;
  background: var(--orange);
  transition: width 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ═══════════════════════════════════════════════════════════════ */
/* MISC COMPONENTS                                               */
/* ═══════════════════════════════════════════════════════════════ */
.cortesia-reason {
  margin-top: 12px;
  display: none;
}

.cortesia-reason textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-visible);
  background: var(--surface-raised);
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  resize: vertical;
  min-height: 64px;
  outline: none;
  transition: border-color var(--transition);
}

.cortesia-reason textarea:focus {
  border-color: var(--warning);
}

.cortesia-reason label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--warning);
  margin-bottom: 6px;
  display: block;
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
}

.empty-state .headline {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 6px;
}

.empty-state .sub {
  font-size: 13px;
  color: var(--text-disabled);
}

/* ── Class confirmation ── */
.btn-confirmar-clase {
  width: 100%;
  margin-top: 10px;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--orange);
  background: var(--orange-subtle);
  color: var(--orange);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-confirmar-clase:hover {
  background: rgba(255, 107, 0, 0.2);
}

.clase-confirmada-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--green);
  background: var(--green-subtle);
  color: var(--green);
  padding: 8px;
  border-radius: var(--radius);
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 10px;
}

/* ── Delete class button ── */
.btn-noasistio-wrapper {
  padding-left: 10px;
  margin-left: 4px;
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.btn-eliminar-wrapper {
  padding-left: 10px;
  margin-left: 4px;
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.btn-eliminar-clase {
  background: transparent;
  border: none;
  color: var(--text-disabled);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-eliminar-clase:hover {
  color: var(--red);
}

/* ── Section title ── */
.section-title {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 12px;
  margin-top: 20px;
}

.section-title:first-child {
  margin-top: 0;
}

/* ── Badge alerta ── */
.badge-alerta-profesor {
  animation: pulse 1s infinite;
}

/* ═══════════════════════════════════════════════════════════════ */
/* ANIMATIONS                                                     */
/* ═══════════════════════════════════════════════════════════════ */
@keyframes spinner {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ═══════════════════════════════════════════════════════════════ */
/* RESPONSIVE                                                     */
/* ═══════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .header {
    padding: 0 14px;
    height: 50px;
  }

  .header-logo img {
    height: 28px;
  }

  .summary-bar {
    padding: 8px 12px;
    gap: 16px;
  }

  .summary-item .label {
    font-size: 9px;
  }

  .summary-item .value {
    font-size: 14px;
  }

  .tabs {
    padding-left: 0;
  }

  .tab-btn {
    padding: 12px 0;
    font-size: 10px;
    gap: 4px;
    flex: 1;
    justify-content: center;
    border-radius: 0;
  }

  .main {
    padding: 12px;
  }

  .class-card-header {
    padding: 12px 14px;
    gap: 10px;
  }

  .class-time {
    font-size: 20px;
    min-width: 52px;
  }

  .class-type {
    font-size: 14px;
  }

  .person-row {
    flex-wrap: wrap;
  }

  .person-actions {
    justify-content: flex-end;
    flex-wrap: wrap;
  }

  .btn-asistencia {
    width: 44px;
    height: 44px;
  }

  .btn-cobrar {
    min-height: 36px;
  }

  .btn-walkin {
    min-height: 48px;
  }

  .action-btn {
    padding: 14px 12px;
  }

  .caja-card {
    min-width: calc(50% - 4px);
    flex: 1 1 calc(50% - 4px);
    padding: 14px;
  }

  .caja-card .value {
    font-size: 18px;
  }

  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    max-width: 100%;
    max-height: 92vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    animation: slideUpModal 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
  }

  @keyframes slideUpModal {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
  }

  .method-btn {
    flex: 1;
    padding: 14px 8px;
    min-height: 48px;
  }

  .search-input {
    font-size: 16px;
    padding: 14px 16px;
  }

  .plan-option {
    padding: 14px 12px;
    min-height: 52px;
  }

  .form-input,
  .form-select {
    font-size: 16px;
    min-height: 48px;
  }

  .btn-primary,
  .btn-secondary,
  .btn-success,
  .btn-danger {
    min-height: 48px;
    font-size: 14px;
  }
}

@media (max-width: 400px) {
  .caja-card {
    min-width: 100%;
  }

  .tab-btn {
    font-size: 9px;
  }

  .action-btn {
    font-size: 13px;
    padding: 12px 10px;
  }

  .class-card-header {
    padding: 12px 10px;
  }

  .class-time {
    font-size: 18px;
    min-width: 46px;
  }

  .class-type {
    font-size: 13px;
  }

  .person-name {
    font-size: 13px;
    white-space: normal;
    word-break: break-word;
    line-height: 1.3;
  }

  .person-plan {
    white-space: normal;
    word-break: break-word;
  }

  .class-body {
    padding: 0 10px 10px;
  }
}

@media (pointer: coarse) {
  .btn-asistencia,
  .btn-walkin,
  .btn-confirmar-clase,
  .btn-promover,
  .btn-eliminar-clase,
  .action-btn,
  .method-btn,
  .tab-btn {
    min-height: 44px;
  }

  .btn-eliminar-clase {
    min-width: 44px;
    min-height: 44px;
  }
}