:root {
  --color-primary: #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-accent: #95d5b2;
  --color-bg: #f8f9f6;
  --color-surface: #ffffff;
  --color-surface-alt: #f0f4f1;
  --color-text: #1a1a1a;
  --color-text-muted: #6b7280;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-success: #16a34a;
  --color-success-bg: #f0fdf4;
  --color-border: #d1d5db;
  --color-border-light: #e5e7eb;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── Layout ── */

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px;
}

.container--wide {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px;
}

.page-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
}

/* ── Nav ── */

.nav-bar {
  background: var(--color-primary);
  color: #fff;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav-link {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
}

.nav-link:hover { text-decoration: underline; }

/* ── Public tab nav ── */

.tab-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar { display: none; }

.tab-nav__inner {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: max-content;
  padding: 0 16px;
}

.tab-nav__item {
  display: inline-flex;
  align-items: center;
  padding: 14px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.tab-nav__item:hover {
  color: var(--color-primary);
}

.tab-nav__item.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

/* ── Card ── */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

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

.card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}

.card__subtitle {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: -10px;
  margin-bottom: 16px;
}

/* ── Landing logo block ── */

.brand-block {
  text-align: center;
  margin-bottom: 32px;
}

.brand-block__logo {
  width: 64px;
  height: 64px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.75rem;
}

.brand-block__name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.03em;
}

.brand-block__tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ── Forms ── */

.form-group {
  margin-bottom: 16px;
}

.form-group:last-of-type { margin-bottom: 0; }

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

label .optional {
  color: var(--color-text-muted);
  font-weight: 400;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
}

textarea {
  resize: vertical;
  min-height: 90px;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
}

.btn--primary:hover { background: var(--color-primary-dark); }

.btn--secondary {
  background: var(--color-surface-alt);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  width: 100%;
}

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

.btn--ghost {
  background: none;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-weight: 400;
  padding: 6px 12px;
}

.btn--ghost:hover { color: var(--color-primary); }

.btn--sm {
  padding: 6px 14px;
  font-size: 0.8125rem;
  width: auto;
}

.btn--danger {
  background: var(--color-error);
  color: #fff;
}

.btn--danger:hover { background: #b91c1c; }

.btn-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

.btn-row--center { justify-content: center; }

/* ── Alerts ── */

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 16px;
  display: none;
}

.alert--error {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid #fecaca;
}

.alert--success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #bbf7d0;
}

.alert.is-visible { display: block; }

/* ── Player list (dashboard) ── */

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

.player-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: inherit;
}

.player-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.player-card__info { flex: 1; min-width: 0; }

.player-card__name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-primary-dark);
  margin-bottom: 2px;
}

.player-card__meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.player-card__actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

/* ── Session cards ── */

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

.session-entry {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.session-entry__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  gap: 12px;
}

.session-entry__date {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-primary-dark);
}

.session-entry__duration {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.session-entry__topics {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.session-entry__notes {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  white-space: pre-wrap;
}

/* ── Last session reminder ── */

.reminder-panel {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.reminder-panel__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #92400e;
  margin-bottom: 8px;
}

/* ── LTTDP sections ── */

.lttdp-section {
  margin-bottom: 20px;
}

.lttdp-section:last-child { margin-bottom: 0; }

.lttdp-section__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.lttdp-section__content {
  font-size: 0.9375rem;
  color: var(--color-text);
  white-space: pre-wrap;
  line-height: 1.7;
}

.lttdp-section__empty {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ── Selector grid (multi-player) ── */

.selector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.selector-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  font-family: var(--font-base);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.selector-card:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-alt);
}

.selector-card__initials {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 auto 10px;
}

/* ── Profile info grid ── */

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
}

.info-item__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.info-item__value {
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* ── Search ── */

.search-bar {
  position: relative;
  margin-bottom: 16px;
}

.search-bar input {
  padding-left: 36px;
}

.search-bar__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  font-size: 1rem;
}

/* ── Empty states ── */

.empty-state {
  text-align: center;
  padding: 40px 16px;
  color: var(--color-text-muted);
}

.empty-state__icon { font-size: 2.5rem; margin-bottom: 12px; }
.empty-state__text { font-size: 0.9375rem; }

/* ── Loading ── */

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 40px auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Utility ── */

.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); font-size: 0.875rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.divider { border: none; border-top: 1px solid var(--color-border-light); margin: 20px 0; }

/* ── Responsive ── */

@media (max-width: 480px) {
  .info-grid { grid-template-columns: 1fr; }
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; }
  .selector-grid { grid-template-columns: 1fr; }
  .player-card { flex-direction: column; align-items: flex-start; }
  .player-card__actions { width: 100%; justify-content: flex-end; }
  .nav-bar { padding: 0 16px; }
}