:root {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-border: #e2e5ea;
  --color-text: #1a2230;
  --color-text-muted: #64748b;
  --color-primary: #ff5a1f;
  --color-primary-dark: #e0470f;
  --color-navy: #101828;
  --color-navy-2: #1d2939;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-warning: #d97706;
  --color-warning-bg: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --color-muted-bg: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --nav-height: 60px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Urbanist", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  font-size: clamp(14px, 1.4vw, 16px);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.panel-layout { min-height: 100vh; display: flex; flex-direction: column; }

.panel-nav {
  height: var(--nav-height);
  background: var(--color-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(12px, 3vw, 28px);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
}

.panel-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .2px;
}

.panel-nav__brand img { height: 28px; width: auto; }

.panel-nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.panel-nav__link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.75);
  font-weight: 600;
  font-size: .92rem;
  white-space: nowrap;
}

.panel-nav__link:hover { color: #fff; background: rgba(255,255,255,.08); }
.panel-nav__link.is-active { color: #fff; background: var(--color-primary); }

.panel-nav__toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 6px;
}

.panel-nav__user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  color: rgba(255,255,255,.8);
}

.panel-nav__user form { margin: 0; }

.btn-link-logout {
  background: none;
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .82rem;
}
.btn-link-logout:hover { background: rgba(255,255,255,.12); }

.panel-main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(14px, 3vw, 28px);
  animation: fadeInUp .3s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.page-header h1 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); margin: 0; }
.page-header p { margin: 4px 0 0; color: var(--color-text-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .92rem;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.1;
  transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease, transform .1s ease;
}
.btn:active { transform: scale(.97); }

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: 0 4px 10px rgba(255, 90, 31, .25); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-muted-bg); }
.btn-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.btn-danger:hover { background: var(--color-danger); color: #fff; }
.btn-sm { padding: 7px 12px; font-size: .82rem; }
.btn-block { width: 100%; justify-content: center; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  animation: fadeIn .3s ease;
}

.card + .card { margin-top: 16px; }

a.card {
  display: block;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
a.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(16, 24, 40, .1);
  border-color: var(--color-primary);
}

.grid { display: grid; gap: 16px; }
.grid-stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: transform .15s ease, box-shadow .15s ease;
  animation: fadeInUp .3s ease;
}
.stat-tile:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16, 24, 40, .1); }
.stat-tile .stat-value { transition: color .2s ease; }
.stat-tile .stat-value { font-size: 1.9rem; font-weight: 700; line-height: 1.1; }
.stat-tile .stat-label { color: var(--color-text-muted); font-size: .85rem; margin-top: 4px; }

.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

table.data-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.data-table th, table.data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--color-border); }
table.data-table th { color: var(--color-text-muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr { transition: background-color .12s ease; }
table.data-table tr[onclick]:hover { background: var(--color-muted-bg); }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background-color .2s ease, color .2s ease;
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-muted { background: var(--color-muted-bg); color: var(--color-text-muted); }

.form-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-weight: 600; font-size: .88rem; }
.form-group .help-text { font-size: .78rem; color: var(--color-text-muted); }
.form-group .errorlist { list-style: none; margin: 2px 0 0; padding: 0; color: var(--color-danger); font-size: .8rem; }

.form-control {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: .95rem;
  color: var(--color-text);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 90, 31, .18);
}

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: 18px; height: 18px; }

.form-group ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 16px; flex-wrap: wrap; }
.form-group ul li { display: flex; align-items: center; }
.form-group ul li label { display: flex; align-items: center; gap: 6px; font-weight: 600; cursor: pointer; }
.form-group ul li input[type="radio"] { width: 16px; height: 16px; }

.messages { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-direction: column; gap: 8px; }
.messages li {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  animation: fadeInUp .25s ease;
}
.messages .success { background: var(--color-success-bg); color: var(--color-success); }
.messages .error { background: var(--color-danger-bg); color: var(--color-danger); }
.messages .warning { background: var(--color-warning-bg); color: var(--color-warning); }
.messages .info { background: var(--color-muted-bg); color: var(--color-text); }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-muted);
}

.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; align-items: center; }
.filter-bar .form-control { width: auto; min-width: 160px; }

.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 18px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--color-border); margin-bottom: 16px; overflow-x: auto; }
.tabs a {
  padding: 10px 16px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.tabs a.is-active { color: var(--color-primary); border-color: var(--color-primary); }

.session-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  flex-wrap: wrap;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.session-card + .session-card { margin-top: 10px; }
.session-card__meta { color: var(--color-text-muted); font-size: .85rem; margin-top: 2px; }
.session-card__title { font-weight: 700; }
a.session-card:hover {
  transform: translateY(-2px) translateX(2px);
  box-shadow: 0 6px 16px rgba(16, 24, 40, .1);
  border-color: var(--color-primary);
}

.attendance-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}
.attendance-row + .attendance-row { margin-top: 10px; }
.attendance-row__name { font-weight: 700; }
.attendance-row__info { font-size: .8rem; color: var(--color-text-muted); margin-top: 2px; }
.attendance-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.attendance-actions form { margin: 0; }

.attn-btn {
  min-width: 84px;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-weight: 700;
  font-size: .85rem;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
}
.attn-btn:active { transform: scale(.95); }
.attn-btn.attended { color: var(--color-success); }
.attn-btn.attended.is-current { background: var(--color-success); color: #fff; border-color: var(--color-success); }
.attn-btn.absent { color: var(--color-danger); }
.attn-btn.absent.is-current { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.attn-btn.excused { color: var(--color-warning); }
.attn-btn.excused.is-current { background: var(--color-warning); color: #fff; border-color: var(--color-warning); }
.attn-btn.registered.is-current { background: var(--color-navy); color: #fff; border-color: var(--color-navy); }

.quick-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }

.detail-grid { display: grid; gap: 16px; grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr); align-items: start; }

@media (max-width: 860px) {
  .detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .panel-nav__toggle { display: inline-flex; }
  .panel-nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-navy-2);
    flex-direction: column;
    align-items: stretch;
    padding: 0 10px;
    gap: 2px;
    max-height: calc(100vh - var(--nav-height));
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: max-height .25s ease, opacity .2s ease, transform .2s ease, visibility 0s linear .25s, padding .25s ease;
  }
  .panel-nav__links.is-open {
    max-height: calc(100vh - var(--nav-height));
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    padding: 10px;
    transition: max-height .25s ease, opacity .2s ease, transform .2s ease, padding .25s ease;
    overflow-y: auto;
  }
  .panel-nav__link { padding: 12px 14px; }
  .panel-nav__user { display: none; }

  .panel-main.has-tabbar { padding-bottom: 88px; }
}

.mobile-tabbar {
  display: none;
}

@media (max-width: 760px) {
  .mobile-tabbar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 40;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -2px 8px rgba(16, 24, 40, .06);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px));
  }
  .mobile-tabbar__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 6px 2px;
    border-radius: var(--radius-sm);
    font-size: .68rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: color .15s ease, background-color .15s ease;
  }
  .mobile-tabbar__item i { font-size: 1.05rem; }
  .mobile-tabbar__item.is-active { color: var(--color-primary); }
  .mobile-tabbar__item:active { background: var(--color-muted-bg); }
}

.mobile-only { display: none; }

.member-card-list { flex-direction: column; gap: 10px; }
.card-list { display: flex; flex-direction: column; gap: 10px; }

.member-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  animation: fadeIn .3s ease;
}

.member-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.member-card__name { font-weight: 700; font-size: 1.02rem; }
.member-card__meta { color: var(--color-text-muted); font-size: .82rem; margin-top: 2px; }

.member-card__package {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
  font-size: .88rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
}
.member-card__package i { color: var(--color-primary); }
.member-card__sessions { color: var(--color-text-muted); font-size: .8rem; }
.member-card__no-package { color: var(--color-text-muted); }

.member-card__actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.member-card__actions .btn { flex: 1; }
.member-card__actions .icon-btn { flex: 0 0 auto; width: 44px; padding: 10px; justify-content: center; }
.member-card__actions .whatsapp { color: #25D366; border-color: #25D366; }
.member-card__actions .whatsapp:hover { background: #25D366; color: #fff; }

@media (max-width: 760px) {
  .desktop-only { display: none; }
  .mobile-only { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}