/* ============================================
   Tennis Kosmos — Booking Site Styles
   Dark theme, Cal.com layout, tennis accents
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg-raised: #141414;
  --bg-tile: #1e1e1e;
  --bg-tile-hover: #2a2a2a;
  --bg-slot: #1a1a1a;
  --bg-slot-hover: #252525;
  --border: #2a2a2a;
  --border-light: #333;
  --text: #e8e8e8;
  --text-dim: #888;
  --text-muted: #555;
  --accent: #c5e84c;
  --accent-dark: #a8c73a;
  --accent-glow: rgba(197, 232, 76, 0.15);
  --clay: #c66c4d;
  --clay-dark: #8a4a35;
  --court-blue: #3b6ea5;
  --danger: #e74c3c;
  --success: #2ecc71;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 50px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --max-w: 520px;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  text-align: center;
  padding: 3rem 1.5rem 2rem;
  overflow: hidden;
}

.hero-court-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.04;
  pointer-events: none;
}

.hero-ball {
  position: absolute;
  top: 2rem;
  right: calc(50% - 220px);
  opacity: 0.18;
  pointer-events: none;
}

@media (max-width: 500px) {
  .hero-ball { right: 1rem; top: 1.5rem; }
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  position: relative;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero .tagline {
  font-size: 1rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
  position: relative;
}

/* ---- Language switcher ---- */
.lang-switcher {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 2px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
  z-index: 10;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.75rem;
  font-family: var(--font);
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

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

.lang-btn.active {
  background: var(--accent);
  color: #0a0a0a;
}

/* ---- Main container ---- */
.main-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.75rem 0.5rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  text-align: center;
}

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

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

/* ---- Calendar ---- */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.calendar-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
}

.calendar-nav {
  display: flex;
  gap: 4px;
}

.calendar-nav button {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
  font-size: 1rem;
}

.calendar-nav button:hover {
  background: var(--bg-tile);
  color: var(--text);
}

.calendar-nav button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 4px;
}

.weekday-cell {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  transition: background var(--transition), transform 0.1s ease;
}

.day-cell.empty {
  /* empty placeholder */
}

.day-cell.outside {
  color: var(--text-muted);
  opacity: 0.3;
}

.day-cell.available {
  background: var(--bg-tile);
  color: var(--text);
  cursor: pointer;
}

.day-cell.available:hover {
  background: var(--bg-tile-hover);
  transform: scale(1.05);
}

.day-cell.today {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.day-cell.today::after {
  content: '';
  position: absolute;
  bottom: 5px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.day-cell.selected {
  background: var(--accent) !important;
  color: #0a0a0a !important;
  font-weight: 700;
  transform: scale(1.05);
}

.day-cell.selected::after {
  background: #0a0a0a;
}

.day-cell.unavailable {
  color: var(--text-muted);
  opacity: 0.35;
}

.day-cell.today.unavailable {
  opacity: 0.7;
  color: var(--text-dim);
}

.day-cell.past {
  display: flex;
  color: var(--text-muted);
  opacity: 0.15;
}

/* ---- Slot section ---- */
.slot-section {
  margin-top: 1.5rem;
}

.slot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.slot-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.slot-header h3 span {
  font-weight: 400;
  color: var(--text-dim);
  font-size: 1rem;
  margin-left: 0.25rem;
}

/* ---- Duration picker ---- */
.duration-picker {
  display: flex;
  gap: 2px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.duration-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-family: var(--font);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-weight: 600;
}

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

.duration-btn.active {
  background: var(--bg-tile);
  color: var(--text);
}

/* ---- Slot list ---- */
.slot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slot-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: var(--bg-slot);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 0.1s ease;
}

.slot-btn:hover {
  background: var(--bg-slot-hover);
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.slot-btn.expanded {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.slot-time {
  font-weight: 700;
  font-size: 1rem;
}

.slot-info {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  flex-shrink: 0;
}

.slot-price {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
}

.slot-courts {
  font-size: 0.85rem;
  color: var(--text-dim);
  min-width: 6.5rem;
  text-align: left;
}

.slot-detail {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: right;
  text-align: right;
}

/* ---- Picker (court / coach) ---- */
.picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0.75rem 1.25rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  margin-top: -8px;
  margin-bottom: 4px;
  animation: slideDown 0.15s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.picker-pill {
  background: var(--bg-tile);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.picker-pill:hover {
  background: var(--accent);
  color: #0a0a0a;
  border-color: var(--accent);
}

.picker-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  width: 100%;
  margin-bottom: 2px;
}

/* ---- Booking form ---- */
.booking-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.2s ease;
  padding: 1rem;
}

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

.booking-modal {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 420px;
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

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

.booking-modal h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.booking-summary {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.booking-summary strong {
  color: var(--text);
}

.form-group {
  margin-bottom: 0.875rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 4px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

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

.form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.btn-primary {
  flex: 1;
  background: var(--accent);
  color: #0a0a0a;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform 0.1s ease;
}

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

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  font-family: var(--font);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-secondary:hover {
  background: var(--bg-tile);
}

/* ---- States ---- */
.loading-state,
.empty-state,
.success-state,
.error-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-dim);
}

.loading-state .ball-bounce {
  display: inline-block;
  animation: bounce 0.8s ease-in-out infinite;
  margin-bottom: 0.75rem;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

.empty-state p,
.error-state p {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.success-state h4 {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.success-state p {
  font-size: 0.9rem;
}

.error-state p {
  color: var(--danger);
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.footer-court {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.03;
  pointer-events: none;
}

.footer-content {
  position: relative;
}

.footer-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.footer-info {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-info a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-info a:hover {
  color: var(--accent);
}

/* ---- Tennis ball divider ---- */
.ball-divider {
  text-align: center;
  margin: 1.5rem 0;
  opacity: 0.2;
}

/* ---- Responsive ---- */
@media (min-width: 600px) {
  .hero h1 { font-size: 2.5rem; }
  .main-container { padding: 0 2rem 3rem; }
}

@media (max-width: 380px) {
  .day-cell { font-size: 0.8rem; }
  .slot-btn { padding: 0.85rem 1rem; font-size: 0.85rem; }
  .slot-time { font-size: 0.9rem; }
  .duration-btn { padding: 4px 8px; font-size: 0.75rem; }
  .tab-btn { font-size: 0.8rem; }
}

/* ---- Confirmation page inline ---- */
.confirm-page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1rem;
  text-align: center;
}

.confirm-page h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.confirm-page p {
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

/* ---- Slot price tag ---- */
.slot-price {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ---- Selection ---- */
::selection {
  background: var(--accent);
  color: #0a0a0a;
}