/* Imports premium fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --bg-dark: #090a0f;
  --bg-card: rgba(18, 22, 33, 0.7);
  --bg-card-hover: rgba(26, 32, 48, 0.85);
  --border-glow: rgba(204, 255, 0, 0.15);
  --border-glow-focus: rgba(204, 255, 0, 0.5);
  
  --primary: #ccff00; /* Shuttlecock Neon Yellow-Green */
  --primary-glow: rgba(204, 255, 0, 0.4);
  --primary-dark: #a8d100;
  
  --secondary: #00f0ff; /* Court Cyan Accent */
  --secondary-glow: rgba(0, 240, 255, 0.3);
  
  --danger: #ff3366;
  --danger-glow: rgba(255, 51, 102, 0.3);
  
  --warning: #ffb300;
  --warning-glow: rgba(255, 179, 0, 0.3);

  --success: #00e676;
  --success-glow: rgba(0, 230, 118, 0.3);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dark: #0b0c10;
  
  /* Font Families */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Card Glassmorphism properties */
  --glass-bg: rgba(18, 22, 33, 0.65);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(12px);
  --shadow-main: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
}

/* Base reset & general styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(at 0% 0%, rgba(204, 255, 0, 0.05) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(0, 240, 255, 0.04) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(204, 255, 0, 0.02) 0px, transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* App Header & Brand */
header {
  padding: 2.5rem 1.5rem 1rem;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--primary-glow);
}

.brand-logo svg {
  width: 28px;
  height: 28px;
  fill: var(--text-dark);
}

.brand-text h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, #fff, #9ca3af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Admin Edit Session Button */
.admin-trigger-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.admin-trigger-btn:hover {
  background: rgba(204, 255, 0, 0.1);
  border-color: var(--primary);
  box-shadow: 0 0 15px rgba(204, 255, 0, 0.2);
  transform: translateY(-2px);
}

/* Main Container Layout */
main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 1024px) {
  main {
    grid-template-columns: 1.2fr 1.8fr;
  }
}

.full-width-section {
  grid-column: 1 / -1;
}

/* Grid & Cards system */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow-main);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, transparent, transparent);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.12);
}

.stat-card:hover::before {
  background: linear-gradient(to right, var(--primary), var(--secondary));
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.stat-subtext {
  font-size: 0.75rem;
  color: var(--primary);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* Glassmorphism Section Cards */
.card-section {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-main);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-title-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title svg {
  width: 24px;
  height: 24px;
  fill: var(--primary);
  filter: drop-shadow(0 0 5px var(--primary-glow));
}

/* Beautiful Interactive Form elements */
.form-group {
  margin-bottom: 1.25rem;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  fill: var(--text-muted);
  transition: fill 0.3s ease;
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: #fff;
  padding: 0.8rem 1rem 0.8rem 2.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 12px var(--border-glow);
}

.form-input:focus + .input-icon {
  fill: var(--primary);
}

select.form-input {
  cursor: pointer;
  appearance: none;
  background-color: #121621 !important; /* Solid dark background for Firefox/Chrome native dropdown lists */
  color: #fff !important;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%239ca3af'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 20px;
}

.form-input option {
  background-color: #121621 !important;
  color: #fff !important;
}

/* Level Segmented Selector */
.level-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.3rem;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
}

.level-option {
  position: relative;
}

.level-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.level-label {
  display: block;
  text-align: center;
  padding: 0.6rem 0.5rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-display);
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--text-muted);
}

.level-option input:checked + .level-label {
  color: var(--text-dark);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Level Colors for checked state */
#lvl-casual:checked + .level-label { background: var(--secondary); }
#lvl-inter:checked + .level-label { background: var(--primary); }
#lvl-adv:checked + .level-label { background: var(--danger); }

/* Switch style slider for guests */
.guest-toggle-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.02);
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
}

.guest-desc h4 {
  font-size: 0.9rem;
  font-weight: 600;
}

.guest-desc p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255,255,255,0.1);
  transition: .4s;
  border-radius: 34px;
  border: 1px solid var(--glass-border);
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(22px);
  background-color: var(--bg-dark);
}

/* Guests Count Input */
.guests-count-wrapper {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: fadeIn 0.3s ease;
}

.guests-count-wrapper.hidden {
  display: none;
}

.guest-input-box {
  width: 80px;
  text-align: center;
  padding: 0.5rem;
}

/* Submit Button */
.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-dark);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 1rem;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(204, 255, 0, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(204, 255, 0, 0.35);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Tabs for Roster & Waitlist */
.roster-tabs {
  display: flex;
  border-bottom: 1px solid var(--glass-border);
  gap: 1rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 0.5rem;
  cursor: pointer;
  position: relative;
  transition: color 0.3s ease;
}

.tab-btn:hover {
  color: #fff;
}

.tab-btn.active {
  color: var(--primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

.tab-btn .badge-count {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  margin-left: 0.5rem;
  font-family: var(--font-body);
}

.tab-btn.active .badge-count {
  background: rgba(204, 255, 0, 0.15);
  color: var(--primary);
}

/* Roster / Waitlist Lists */
.roster-container {
  max-height: 400px;
  overflow-y: auto;
  padding-right: 0.25rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.08) transparent;
}

.roster-container::-webkit-scrollbar {
  width: 6px;
}

.roster-container::-webkit-scrollbar-track {
  background: transparent;
}

.roster-container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.roster-container::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

.player-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.player-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.3s ease;
  animation: slideIn 0.3s ease;
}

.player-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.player-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.player-rank {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.85rem;
  width: 20px;
}

.player-avatar {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--primary);
  border: 1px solid rgba(204, 255, 0, 0.15);
}

.player-name-wrapper {
  display: flex;
  flex-direction: column;
}

.player-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.player-details {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tag-level {
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-display);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-level.casual {
  background: rgba(0, 240, 255, 0.1);
  color: var(--secondary);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.tag-level.intermediate {
  background: rgba(204, 255, 0, 0.1);
  color: var(--primary);
  border: 1px solid rgba(204, 255, 0, 0.2);
}

.tag-level.advanced {
  background: rgba(255, 51, 102, 0.1);
  color: var(--danger);
  border: 1px solid rgba(255, 51, 102, 0.2);
}

.player-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon svg {
  width: 16px;
  height: 16px;
  fill: var(--text-muted);
}

.btn-icon.delete:hover {
  background: rgba(255, 51, 102, 0.15);
}

.btn-icon.delete:hover svg {
  fill: var(--danger);
}

.btn-icon.assign:hover {
  background: rgba(0, 240, 255, 0.15);
}

.btn-icon.assign:hover svg {
  fill: var(--secondary);
}

/* Empty State Styles */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--text-muted);
}

.empty-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  fill: rgba(255,255,255,0.08);
}

.empty-text {
  font-size: 0.9rem;
}

/* Interactive Court Visualizer */
.court-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.court-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .court-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.court-card {
  background: rgba(18, 22, 33, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.2);
}

.court-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 0.75rem;
}

.court-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.court-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success-glow);
}

.court-indicator.full {
  background-color: var(--warning);
  box-shadow: 0 0 8px var(--warning-glow);
}

/* Badminton Court Canvas SVG Mockup styles */
.court-canvas {
  aspect-ratio: 16 / 9;
  background: linear-gradient(180deg, #1b3a24 0%, #112517 100%);
  border: 3px solid #fff;
  border-radius: 8px;
  position: relative;
  box-shadow: 0 10px 20px rgba(0,0,0,0.3);
  margin-bottom: 1.25rem;
  overflow: hidden;
}

/* Inner Court lines (Standard singles/doubles lines) */
.court-line {
  position: absolute;
  border: 1px solid rgba(255,255,255,0.7);
}

.court-line.horizontal-center {
  top: 50%;
  left: 0; right: 0;
  height: 0;
}

.court-line.vertical-net {
  left: 50%;
  top: 0; bottom: 0;
  width: 0;
  border-style: dashed;
  border-color: rgba(255,255,255,0.4);
}

.court-line.short-service-left {
  left: 32%;
  top: 0; bottom: 0;
  width: 0;
}

.court-line.short-service-right {
  right: 32%;
  top: 0; bottom: 0;
  width: 0;
}

.court-line.long-service-singles-left {
  left: 8%;
  top: 0; bottom: 0;
  width: 0;
}

.court-line.long-service-singles-right {
  right: 8%;
  top: 0; bottom: 0;
  width: 0;
}

.court-line.doubles-sideline-top {
  top: 8%;
  left: 0; right: 0;
  height: 0;
}

.court-line.doubles-sideline-bottom {
  bottom: 8%;
  left: 0; right: 0;
  height: 0;
}

.net-post-top, .net-post-bottom {
  position: absolute;
  width: 4px; height: 10px;
  background: var(--warning);
  left: 50%;
  transform: translateX(-50%);
}
.net-post-top { top: 0; }
.net-post-bottom { bottom: 0; }

.net-graphic {
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 0 10px rgba(255,255,255,0.5);
  transform: translateX(-50%);
  z-index: 2;
}

/* Court Player slots (Visual positioning on the green canvas) */
.court-players {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 1rem 0.5rem;
  z-index: 5;
}

.court-slot {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
}

.court-player-bubble {
  background: rgba(9, 10, 15, 0.95);
  border: 1px solid var(--primary);
  box-shadow: 0 4px 10px rgba(0,0,0,0.5), 0 0 10px rgba(204, 255, 0, 0.1);
  color: #fff;
  border-radius: 30px;
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  animation: scaleUp 0.2s ease;
  cursor: pointer;
  transition: all 0.2s ease;
}

.court-player-bubble:hover {
  transform: scale(1.05);
  background: var(--primary);
  color: var(--text-dark);
  border-color: #fff;
}

.court-slot-empty {
  width: 28px;
  height: 28px;
  border: 1.5px dashed rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
  font-weight: 700;
  transition: all 0.2s ease;
}

.court-slot-empty:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(204,255,0,0.05);
  cursor: pointer;
}

/* Court controls */
.court-controls {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.btn-secondary {
  flex: 1;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--text-muted);
}

.btn-secondary.clear-court:hover {
  background: rgba(255, 51, 102, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

/* Modal and Overlays */
.overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(9, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1.5rem;
}

.overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: #111420;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 30px var(--border-glow);
  width: 100%;
  max-width: 500px;
  border-radius: 24px;
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: #fff;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Animations */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Dynamic Capacity Bar */
.capacity-container {
  margin-top: 0.5rem;
  width: 100%;
}

.capacity-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.25rem;
  position: relative;
}

.capacity-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--secondary), var(--primary));
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px var(--primary-glow);
}

.capacity-bar-fill.full {
  background: linear-gradient(90deg, var(--primary), var(--warning));
  box-shadow: 0 0 8px var(--warning-glow);
}

.capacity-text {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Session Selection Tabs CSS */
.session-selector-section {
  margin-bottom: 0.5rem;
}

.session-tabs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: 20px;
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-main);
}

.session-tabs {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  padding: 0.25rem 0;
  align-items: center;
}

.session-tabs::-webkit-scrollbar {
  display: none; /* Chrome, Safari */
}

.session-tab {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 0.6rem 1.2rem;
  border-radius: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.session-tab:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.session-tab.active {
  background: rgba(204, 255, 0, 0.08);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 12px rgba(204, 255, 0, 0.15);
}

.add-session-btn {
  flex: 0 0 auto;
  padding: 0.6rem 1.2rem;
  border-radius: 12px;
  font-size: 0.9rem;
  background: rgba(204, 255, 0, 0.04);
  border-color: var(--border-glow);
  color: var(--primary);
}

.add-session-btn:hover {
  background: rgba(204, 255, 0, 0.12);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 15px rgba(204, 255, 0, 0.2);
  transform: translateY(-2px);
}

.admin-delete-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 51, 102, 0.05);
  border: 1px solid rgba(255, 51, 102, 0.2);
  color: var(--danger);
  padding: 0.8rem 2.5rem;
  border-radius: 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(255, 51, 102, 0.05);
}

.admin-delete-btn:hover {
  background: rgba(255, 51, 102, 0.15);
  border-color: var(--danger);
  box-shadow: 0 6px 20px rgba(255, 51, 102, 0.25);
  transform: translateY(-2px);
}

.admin-delete-btn:active {
  transform: translateY(0);
}