/* ===========================================
   Variables
   =========================================== */
:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-light: rgba(99, 102, 241, 0.15);
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --border-hover: #475569;
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --warning: #eab308;
  --warning-bg: rgba(234, 179, 8, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===========================================
   Base
   =========================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 15px;
}
a { color: var(--primary); }

/* ===========================================
   Navbar
   =========================================== */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem; height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.nav-brand {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 600; font-size: 0.95rem; cursor: pointer;
}
.nav-icon { font-size: 1.2rem; }
.nav-links { display: flex; gap: 0.25rem; }
.nav-link {
  padding: 0.4rem 0.8rem; border: none; background: none;
  color: var(--text-secondary); font-family: var(--font);
  font-size: 0.85rem; border-radius: var(--radius);
  cursor: pointer; transition: background 0.2s, color 0.2s;
}
.nav-link:hover { color: var(--text); background: var(--bg); }
.nav-link.active { color: var(--primary); background: var(--primary-light); }
.nav-mobile-toggle {
  display: none; background: none; border: none;
  color: var(--text); font-size: 1.4rem; cursor: pointer;
}

/* ===========================================
   Views & Layout
   =========================================== */
.view { display: none; }
.view.active { display: block; }
.view-container { 
  max-width: 1000px; 
  margin: 0 auto; 
  padding: 2rem 1.5rem 4rem; 
  flex: 1; /* Push footer down */
}
.center-content.active {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: calc(100vh - 120px);
}
.view.active.center-content { display: flex; }
.view-header { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1.5rem; }
.back-btn {
  padding: 0.35rem 0.7rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-secondary); font-family: var(--font);
  font-size: 0.82rem; cursor: pointer; transition: border-color 0.2s;
}
.back-btn:hover { border-color: var(--primary); color: var(--text); }

/* ===========================================
   Cards
   =========================================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* ===========================================
   Buttons
   =========================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.5rem 1.1rem; border: none; border-radius: var(--radius);
  font-family: var(--font); font-size: 0.88rem; font-weight: 500;
  cursor: pointer; transition: background 0.2s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: var(--surface); border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--error); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-success { background: var(--success); color: white; }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.btn-lg { padding: 0.6rem 1.5rem; font-size: 0.95rem; }
.btn-full { width: 100%; }

/* ===========================================
   Forms
   =========================================== */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block; margin-bottom: 0.3rem;
  font-size: 0.82rem; font-weight: 500; color: var(--text-secondary);
}
.form-group .optional { color: var(--text-muted); font-weight: 400; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.55rem 0.8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font); font-size: 0.9rem;
  transition: border-color 0.2s;
  outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79,70,229,0.15);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 70px; }
.form-hint { display: block; margin-top: 0.25rem; font-size: 0.75rem; color: var(--text-muted); }

/* ===========================================
   Hero & Home Section
   =========================================== */
.home-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.home-info {
  padding-top: 1rem;
}
.home-info h1 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.home-info p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}
.home-booking {
  width: 100%;
}

.privacy-info {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary-light);
  border-radius: 50px;
  font-size: 0.8rem; color: #818cf8;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  margin-top: auto;
}
.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-link {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
}
.footer-link:hover {
  color: var(--primary);
}

.legal-content h3 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; color: var(--text); }
.legal-content h3:first-child { margin-top: 0; }
.legal-content p { margin-bottom: 1rem; line-height: 1.6; }
.legal-content ul { margin-bottom: 1rem; padding-left: 1.5rem; }
.legal-content li { margin-bottom: 0.5rem; }

/* ===========================================
   Calendar
   =========================================== */
.calendar-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.calendar-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.cal-nav-btn {
  width: 34px; height: 34px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s;
}
.cal-nav-btn:hover { border-color: var(--primary); }
.calendar-weekdays {
  display: grid; grid-template-columns: repeat(7, 1fr);
  gap: 2px; margin-bottom: 4px;
}
.calendar-weekdays span {
  text-align: center; font-size: 0.72rem;
  font-weight: 600; color: var(--text-muted);
  padding: 0.3rem 0; text-transform: uppercase;
}
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
.cal-day {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); font-size: 0.85rem;
  cursor: default; color: var(--text-muted);
  border: 1px solid transparent; transition: all 0.15s;
}
.cal-day.other-month { opacity: 0.3; }
.cal-day.today { font-weight: 700; color: var(--primary); }
.cal-day.available {
  color: var(--text); background: var(--primary-light);
  cursor: pointer; font-weight: 500;
}
.cal-day.available:hover {
  background: var(--primary); color: white;
}
.cal-day.selected {
  background: var(--primary); color: white; font-weight: 600;
}

/* Slots Panel */
.slots-panel h3 { margin-bottom: 0.3rem; }
.slots-hint { color: var(--text-muted); font-size: 0.85rem; }
.slots-list { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.8rem; }
.slot-btn {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: var(--font); font-size: 0.9rem;
  cursor: pointer; transition: border-color 0.15s;
}
.slot-btn:hover { border-color: var(--primary); background: var(--primary-light); }

/* ===========================================
   Booking Form
   =========================================== */
.booking-layout { display: grid; grid-template-columns: 280px 1fr; gap: 1rem; align-items: start; }
.booking-summary { position: sticky; top: 70px; }
.booking-summary h3 { margin-bottom: 1rem; color: var(--primary); }
.summary-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.6rem 0; border-bottom: 1px solid var(--border);
}
.summary-label { font-size: 0.82rem; color: var(--text-secondary); }
.summary-value { font-weight: 600; font-size: 0.9rem; }
.booking-form h3 { margin-bottom: 0.3rem; }
.privacy-notice {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 0.8rem; margin-bottom: 1.2rem;
  background: var(--primary-light);
  border-radius: var(--radius);
  font-size: 0.78rem; color: var(--primary);
}

/* ===========================================
   Confirmation
   =========================================== */
.confirmation-card, .status-check-card {
  max-width: 460px; width: 100%;
  text-align: center; padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.confirmation-icon, .status-icon { font-size: 2.5rem; margin-bottom: 0.8rem; }
.confirmation-card h2, .status-check-card h2 { margin-bottom: 0.4rem; font-size: 1.3rem; }
.confirmation-card > p, .status-check-card > p { color: var(--text-secondary); margin-bottom: 1.5rem; font-size: 0.92rem; }

.booking-code-display {
  padding: 1.2rem; margin-bottom: 1.2rem;
  background: var(--bg); border: 1px dashed var(--primary);
  border-radius: var(--radius);
}
.code-label { font-size: 0.78rem; color: var(--text-muted); display: block; margin-bottom: 0.3rem; }
.code-value {
  font-size: 1.8rem; font-weight: 700; letter-spacing: 5px;
  color: var(--primary); margin-bottom: 0.6rem;
  font-family: 'Courier New', monospace;
}
.confirmation-details { margin-bottom: 1.2rem; text-align: left; }
.confirmation-warning {
  padding: 0.6rem 0.8rem; margin-bottom: 1.2rem;
  background: var(--warning-bg); border: 1px solid #fde68a;
  border-radius: var(--radius);
  font-size: 0.82rem; color: var(--warning);
}

/* Status Check */
.status-form { margin-bottom: 1rem; }
.status-result {
  text-align: left; padding: 1rem;
  background: var(--success-bg); border: 1px solid #bbf7d0;
  border-radius: var(--radius);
}
.status-result h3 { margin-bottom: 0.4rem; color: var(--success); font-size: 0.95rem; }
.status-error {
  padding: 0.8rem; background: var(--error-bg);
  border: 1px solid #fecaca; border-radius: var(--radius);
  color: var(--error); font-size: 0.88rem;
}

/* Status badges */
.status-badge {
  display: inline-block; padding: 0.15rem 0.55rem;
  border-radius: 50px; font-size: 0.75rem; font-weight: 600;
}
.status-badge.pending { background: var(--warning-bg); color: var(--warning); }
.status-badge.confirmed { background: var(--success-bg); color: var(--success); }
.status-badge.cancelled { background: var(--error-bg); color: var(--error); }

/* ===========================================
   Toast
   =========================================== */
.toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  padding: 0.7rem 1.2rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: var(--font); font-size: 0.88rem;
  box-shadow: var(--shadow-md);
  transform: translateY(80px); opacity: 0;
  transition: all 0.3s ease; z-index: 9999;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--error); }
.toast.success { border-color: var(--success); }

/* ===========================================
   Admin: Auth
   =========================================== */
.auth-screen {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 1.5rem; background: var(--bg);
}
.auth-card {
  max-width: 400px; width: 100%; padding: 2rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  text-align: center;
}
.auth-icon { font-size: 2.5rem; margin-bottom: 0.8rem; }
.auth-card h1 { margin-bottom: 0.3rem; font-size: 1.4rem; }
.auth-card > p { color: var(--text-secondary); margin-bottom: 1.5rem; font-size: 0.88rem; }
.auth-error {
  padding: 0.6rem; margin-bottom: 0.8rem;
  background: var(--error-bg); border: 1px solid #fecaca;
  border-radius: var(--radius); color: var(--error); font-size: 0.82rem;
}

/* ===========================================
   Admin: Layout
   =========================================== */
.admin-body { background: var(--bg); }
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-sidebar {
  width: 220px; min-height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0;
  transition: transform 0.2s;
}
.sidebar-header {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600; font-size: 0.9rem;
}
.sidebar-icon { font-size: 1.1rem; }
.sidebar-nav { flex: 1; padding: 0.6rem 0.5rem; }
.sidebar-link {
  display: flex; align-items: center; gap: 0.6rem;
  width: 100%; padding: 0.55rem 0.8rem;
  background: none; border: none;
  color: var(--text-secondary); font-family: var(--font);
  font-size: 0.85rem; border-radius: var(--radius);
  cursor: pointer; transition: all 0.15s; text-align: left;
}
.sidebar-link:hover { color: var(--text); background: var(--bg); }
.sidebar-link.active { color: var(--primary); background: var(--primary-light); font-weight: 500; }
.sidebar-footer { padding: 0.8rem 1rem; border-top: 1px solid var(--border); }
.encryption-status {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 0.6rem;
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text-muted); }
.status-dot.active { background: var(--success); }
.sidebar-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.3rem; cursor: pointer; }

/* Admin Main */
.admin-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.admin-header {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.8rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 40;
}
.admin-header h2 { flex: 1; font-size: 1.1rem; }
.encryption-badge {
  font-size: 0.72rem; padding: 0.2rem 0.6rem;
  background: var(--success-bg); border: 1px solid #bbf7d0;
  border-radius: 50px; color: var(--success);
}
.admin-section { display: none; padding: 1.5rem; }
.admin-section.active { display: block; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.8rem; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem;
  text-align: center; box-shadow: var(--shadow);
}
.stat-value { font-size: 1.8rem; font-weight: 700; color: var(--primary); margin-bottom: 0.15rem; }
.stat-label { font-size: 0.78rem; color: var(--text-secondary); }
.dashboard-section h3 { margin-bottom: 0.8rem; font-size: 1rem; }

/* Appointments */
.appointments-list { display: flex; flex-direction: column; gap: 0.5rem; }
.empty-state { text-align: center; padding: 2rem; color: var(--text-muted); font-size: 0.9rem; }
.apt-card {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 0.8rem; align-items: center;
  padding: 0.8rem 1rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: pointer;
  transition: border-color 0.15s;
}
.apt-card:hover { border-color: var(--primary); }
.apt-date-badge {
  text-align: center; padding: 0.4rem 0.6rem;
  background: var(--primary-light); border-radius: var(--radius);
  min-width: 50px;
}
.apt-date-badge .day { font-size: 1.1rem; font-weight: 700; color: var(--primary); display: block; }
.apt-date-badge .month { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; }
.apt-info .apt-name { font-weight: 600; font-size: 0.9rem; }
.apt-info .apt-time { font-size: 0.8rem; color: var(--text-secondary); }

/* Toolbar */
.section-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.8rem; }
.toolbar-filters { display: flex; gap: 0.8rem; align-items: center; }
.checkbox-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.85rem; color: var(--text-secondary); cursor: pointer; }

/* ===========================================
   Admin: Time Slots
   =========================================== */
.section-desc { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 1.2rem; }
.slots-manager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.slot-add-form { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; margin-bottom: 1rem; }
.slot-add-form .form-group { margin-bottom: 0; min-width: 120px; }
.slot-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.5rem 0.8rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 0.4rem;
}
.slot-item.booked { opacity: 0.5; }
.slot-item .slot-time { font-weight: 500; font-size: 0.9rem; }
.slot-item .slot-status { font-size: 0.75rem; color: var(--text-muted); }

/* Copy slots */
.copy-form { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; }
.copy-form .form-group { margin-bottom: 0; }

/* ===========================================
   Admin: Blocked Dates
   =========================================== */
.blocked-form { margin-bottom: 1.2rem; }
.inline-form { display: flex; gap: 0.8rem; align-items: flex-end; flex-wrap: wrap; }
.inline-form .form-group { margin-bottom: 0; flex: 1; min-width: 140px; }
.blocked-list { display: flex; flex-direction: column; gap: 0.4rem; }
.blocked-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.blocked-item .blocked-date { font-weight: 500; }
.blocked-item .blocked-reason { font-size: 0.82rem; color: var(--text-secondary); margin-left: 0.5rem; }

/* ===========================================
   Modal
   =========================================== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: 1.5rem;
}
.modal {
  max-width: 500px; width: 100%;
  max-height: 85vh; overflow-y: auto;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem;
  box-shadow: var(--shadow-md); position: relative;
}
.modal-close {
  position: absolute; top: 0.8rem; right: 0.8rem;
  background: none; border: none;
  color: var(--text-muted); font-size: 1.2rem;
  cursor: pointer;
}
.modal-close:hover { color: var(--text); }
.modal h2 { margin-bottom: 1.2rem; font-size: 1.1rem; }
.modal-detail-row {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding: 0.6rem 0; border-bottom: 1px solid var(--border);
}
.modal-detail-label { font-size: 0.82rem; color: var(--text-secondary); min-width: 90px; }
.modal-detail-value { font-weight: 500; text-align: right; word-break: break-word; font-size: 0.9rem; }
.modal-actions { display: flex; gap: 0.5rem; margin-top: 1.2rem; flex-wrap: wrap; }

/* ===========================================
   Responsive
   =========================================== */
@media (max-width: 768px) {
  .hero-cards { grid-template-columns: 1fr; }
  .calendar-wrapper { grid-template-columns: 1fr; }
  .booking-layout { grid-template-columns: 1fr; }
  .booking-summary { position: static; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .slots-manager { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--surface); padding: 0.4rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-mobile-toggle { display: block; }
  .admin-sidebar {
    position: fixed; left: 0; top: 0; bottom: 0;
    transform: translateX(-100%); z-index: 200;
  }
  .admin-sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: block; }
  .inline-form { flex-direction: column; }
  .inline-form .form-group { min-width: 100%; }
  .slot-add-form { flex-direction: column; }
  .slot-add-form .form-group { min-width: 100%; }
}