@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --secondary: #22d3ee;
  --secondary-glow: rgba(34, 211, 238, 0.4);
  --success: #10b981;
  --success-light: #34d399;
  --danger: #ef4444;
  --warning: #f59e0b;
  --dark: #0f172a;
  --dark-light: #1e293b;
  --gray: #64748b;
  --gray-light: #cbd5e1;
  --white: #ffffff;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-xl: 0 35px 60px -15px rgba(0, 0, 0, 0.3);
  --radius: 16px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme */
html[data-theme='dark'] {
  --bg: #0b1220;
  --card-bg: #0f172a;
  --dark: #e6edf7;
  --gray: #8b9bb4;
  --border: rgba(148,163,184,.16);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --primary-glow: rgba(99, 102, 241, 0.2);
  --secondary-glow: rgba(34, 211, 238, 0.2);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: var(--dark);
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

html[data-theme='dark'] body {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(34, 211, 238, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(168, 85, 247, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
  animation: floatingGradient 20s ease infinite;
}

@keyframes floatingGradient {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(-20px, -20px) rotate(1deg); }
  66% { transform: translate(20px, -10px) rotate(-1deg); }
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 2;
}

/* Header - Enhanced */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px) saturate(200%);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: sticky;
  top: 1rem;
  z-index: 100;
  animation: slideDown 0.5s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

html[data-theme='dark'] header {
  background: rgba(15, 23, 42, 0.95);
  border-color: var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.6rem;
  box-shadow: 0 8px 24px var(--primary-glow);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.logo h1 {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

nav button {
  padding: 0.75rem 1.5rem;
  border: none;
  background: transparent;
  color: var(--gray);
  font-weight: 500;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

nav button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

nav button:hover {
  color: var(--primary);
  transform: translateY(-2px);
}

nav button:hover::before {
  opacity: 0.1;
}

nav button.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 8px 24px var(--primary-glow);
  transform: translateY(-2px);
}

/* Admin nav button special style */
nav button.admin-nav {
  background: linear-gradient(135deg, var(--danger) 0%, var(--warning) 100%) !important;
  color: white !important;
}

nav button.admin-nav:hover {
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.4);
  transform: translateY(-3px);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px var(--secondary-glow);
  transition: var(--transition);
}

.user-avatar:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px var(--secondary-glow);
}

.user-info {
  display: none;
}

@media (min-width: 1024px) {
  .user-info {
    display: block;
  }
}

.user-info .user-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
}

.user-info .user-role {
  color: var(--gray);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Main layout */
main {
  padding: 0;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  animation: fadeIn 0.6s ease;
}

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

/* Stats Cards - Enhanced */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

html[data-theme='dark'] .stat-card {
  background: rgba(15, 23, 42, 0.95);
  border-color: var(--border);
}

.stat-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  opacity: 0.1;
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.stat-label {
  color: var(--gray);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-change {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.35rem 0.75rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.stat-change.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.stat-change.negative {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Cards - Enhanced */
.card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

html[data-theme='dark'] .card {
  background: rgba(15, 23, 42, 0.95);
  border-color: var(--border);
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary));
  background-size: 200% 100%;
  animation: shimmer 3s ease infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover::after {
  opacity: 1;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.01em;
}

.card-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Plan View Header - ENHANCED */
#plan-view {
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.plan-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 3rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  color: white;
}

.plan-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(10deg); }
}

#plan-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

#plan-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.6;
  max-width: 800px;
}

.plan-meta-info {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.plan-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.2);
  padding: 0.5rem 1rem;
  border-radius: 10px;
  backdrop-filter: blur(10px);
}

.plan-meta-item strong {
  color: white;
  font-weight: 600;
}

#plan-status-badge {
  padding: 0.5rem 1.25rem;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  color: white;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(255,255,255,0.3);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

#plan-status-badge.warning {
  background: rgba(245, 158, 11, 0.2);
  border-color: rgba(245, 158, 11, 0.4);
}

#plan-status-badge.success {
  background: rgba(16, 185, 129, 0.2);
  border-color: rgba(16, 185, 129, 0.4);
}

/* Forms - Enhanced */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input, select, textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 0.95rem;
  transition: var(--transition);
  background: white;
  color: var(--dark);
  font-family: inherit;
  margin: 0;
}

html[data-theme='dark'] input,
html[data-theme='dark'] select,
html[data-theme='dark'] textarea {
  background: var(--dark-light);
  color: var(--white);
  border-color: var(--border);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
  transform: translateY(-2px);
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Buttons - Enhanced */
button {
  padding: 0.875rem 1.75rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

button:active::before {
  width: 300px;
  height: 300px;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

button.primary, .btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 8px 24px var(--primary-glow);
}

button.secondary, .btn-secondary {
  background: var(--bg);
  color: var(--dark);
  border: 2px solid var(--border);
}

html[data-theme='dark'] button.secondary {
  background: var(--dark-light);
  color: var(--white);
}

button.secondary:hover {
  background: white;
  border-color: var(--primary);
  color: var(--primary);
}

html[data-theme='dark'] button.secondary:hover {
  background: var(--dark);
  border-color: var(--primary);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 1.2rem;
}

/* Plans - Enhanced */
.plan-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.plan-item {
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--bg) 0%, rgba(255,255,255,0.5) 100%);
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: start;
  position: relative;
  overflow: hidden;
}

.plan-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-light) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

html[data-theme='dark'] .plan-item {
  background: linear-gradient(135deg, var(--dark-light) 0%, rgba(30,41,59,0.5) 100%);
}

.plan-item:hover {
  border-color: var(--primary);
  transform: translateX(8px);
  box-shadow: var(--shadow-lg);
}

.plan-item:hover::before {
  opacity: 0.1;
}

.plan-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.plan-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--gray);
  align-items: center;
}

.plan-badge {
  padding: 0.35rem 0.9rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.2));
  color: var(--primary);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.plan-badge.warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.2));
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.3);
}

.plan-badge.success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.3);
}

/* Connections - Enhanced */
.connection-item {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: linear-gradient(135deg, var(--bg) 0%, rgba(255,255,255,0.5) 100%);
  border-radius: 12px;
  margin-bottom: 0.75rem;
  transition: var(--transition);
  border: 2px solid transparent;
}

html[data-theme='dark'] .connection-item {
  background: linear-gradient(135deg, var(--dark-light) 0%, rgba(30,41,59,0.5) 100%);
}

.connection-item:hover {
  transform: translateX(4px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.connection-avatar {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  margin-right: 1rem;
  font-size: 1rem;
  box-shadow: 0 4px 12px var(--secondary-glow);
}

.connection-info {
  flex: 1;
}

.connection-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.125rem;
  color: var(--dark);
}

.connection-role {
  font-size: 0.8rem;
  color: var(--gray);
}

.connection-status {
  padding: 0.35rem 0.9rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-accepted {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Week Navigation - Enhanced */
.week-picker {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: white;
  border-radius: var(--radius);
  padding: 0.75rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

html[data-theme='dark'] .week-picker {
  background: var(--card-bg);
}

.current-week-badge {
  padding: 0.35rem 0.9rem;
  background: linear-gradient(135deg, var(--success-light), var(--success));
  color: white;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 10px rgba(16, 185, 129, 0.4); }
  50% { box-shadow: 0 0 20px rgba(16, 185, 129, 0.6); }
}

/* Sessions Grid - Enhanced */
#sessions-grid-wrapper {
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  padding: 0;
  margin: 0 -1.5rem;
  padding: 0 1.5rem;
  position: relative;
}

#sessions-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: 1.25rem;
  padding-bottom: 1rem;
  min-width: min-content;
}

/* Custom scrollbar - Enhanced */
#sessions-grid-wrapper::-webkit-scrollbar {
  height: 14px;
}

#sessions-grid-wrapper::-webkit-scrollbar-track {
  background: linear-gradient(90deg, var(--bg), var(--gray-light), var(--bg));
  border-radius: 10px;
  margin: 0 1rem;
}

#sessions-grid-wrapper::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 10px;
  border: 2px solid var(--bg);
}

#sessions-grid-wrapper::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
}

/* Day columns - Enhanced */
.day-col {
  background: white;
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 2px solid var(--border);
  min-height: 450px;
  transition: var(--transition);
  flex: 0 0 auto;
  width: 260px;
  min-width: 260px;
  position: relative;
  box-shadow: var(--shadow);
}

html[data-theme='dark'] .day-col {
  background: var(--card-bg);
  border-color: var(--border);
}

.day-col:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.day-col h4 {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--bg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Sessions - Enhanced */
.sess {
  padding: 1rem;
  background: linear-gradient(135deg, var(--bg) 0%, rgba(255,255,255,0.5) 100%);
  border-radius: 12px;
  margin-bottom: 0.75rem;
  border-left: 4px solid var(--primary);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.sess::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-light) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

html[data-theme='dark'] .sess {
  background: linear-gradient(135deg, var(--dark-light) 0%, rgba(30,41,59,0.5) 100%);
}

.sess:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
}

.sess:hover::before {
  opacity: 0.1;
}

.sess strong {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
  margin-bottom: 0.25rem;
}

/* Status badges - Enhanced */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge.pending {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.2));
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge.success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge.fail {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.2));
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge.toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Day status colors - ENHANCED */
.day-col.day-success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(16, 185, 129, 0.03)) !important;
  border-color: var(--success) !important;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.2);
}

.day-col.day-success::before {
  content: '✓';
  position: absolute;
  top: 10px;
  right: 15px;
  color: var(--success);
  font-size: 1.5rem;
  font-weight: bold;
  background: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.day-col.day-fail {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.08), rgba(239, 68, 68, 0.03)) !important;
  border-color: var(--danger) !important;
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.2);
}

.day-col.day-fail::before {
  content: '✗';
  position: absolute;
  top: 10px;
  right: 15px;
  color: var(--danger);
  font-size: 1.5rem;
  font-weight: bold;
  background: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Quick add session bar - Enhanced */
.quick-add-session {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 1.25rem 1.75rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  box-shadow: 0 8px 24px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.quick-add-session::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 40%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.quick-add-session input,
.quick-add-session select {
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: var(--dark);
  padding: 0.625rem 1rem;
  border-radius: 10px;
  font-size: 0.9rem;
  min-width: 0;
  font-weight: 500;
}

.quick-add-session input:focus,
.quick-add-session select:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
  border-color: white;
}

.quick-add-session button {
  background: white;
  color: var(--primary-dark);
  border: none;
  padding: 0.625rem 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.quick-add-session button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.quick-add-session .form-group {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quick-add-session label {
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Day toolbar - Enhanced */
.day-toolbar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.day-toolbar button {
  padding: 0.5rem;
  font-size: 1rem;
  min-width: auto;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--bg), white);
}

.day-toolbar button:hover {
  background: linear-gradient(135deg, white, var(--bg));
}

/* Comments - Enhanced */
.comment {
  border-top: 2px solid var(--border);
  padding: 1rem 0;
  transition: var(--transition);
}

.comment:hover {
  padding-left: 1rem;
  border-left: 3px solid var(--primary);
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.05) 0%, transparent 100%);
}

.comment strong {
  color: var(--primary);
  font-weight: 600;
}

.muted {
  color: var(--gray);
  font-size: 0.875rem;
}

/* Empty state - Enhanced */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--gray);
  font-size: 1rem;
  position: relative;
}

.empty-state::before {
  content: '🔭';
  display: block;
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Floating Action Button - Enhanced */
.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: none;
  box-shadow: 0 10px 30px var(--primary-glow);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  transition: var(--transition);
  z-index: 100;
  animation: bounceIn 0.5s ease;
}

@keyframes bounceIn {
  0% { transform: scale(0); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.fab:hover {
  transform: scale(1.1) rotate(90deg);
  box-shadow: 0 15px 40px var(--primary-glow);
}

/* Hidden class */
.hidden {
  display: none !important;
}

/* Cycles - Visual grouping only */
.cycle-group {
  border: 3px dashed var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  padding-top: 2rem;
  margin: 2rem 0;
  position: relative;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, transparent 100%);
  width: 100%;
}

.cycle-title {
  position: absolute;
  top: -14px;
  left: 20px;
  padding: 0.35rem 1rem;
  border-radius: 20px;
  background: var(--card-bg);
  border: 3px solid var(--primary-light);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
  z-index: 10;
}

html[data-theme='dark'] .cycle-title {
  background: var(--card-bg);
  color: var(--primary-light);
}

/* Week blocks maintain their normal structure */
.week-block {
  margin: 1.5rem 0;
  width: 100%;
}

.week-block:first-child {
  margin-top: 0;
}

.week-block:last-child {
  margin-bottom: 0;
}

/* Inside a cycle, reduce spacing slightly */
.cycle-group .week-block {
  margin: 1rem 0;
}

.cycle-group .week-block:first-child {
  margin-top: 0.5rem;
}

/* Week grids stay horizontal */
.week-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: 1rem;
  overflow-x: auto;
  overflow-y: visible;
  padding-bottom: 1rem;
  width: 100%;
}

.week-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--gray);
  font-weight: 600;
  padding: 0.5rem 0;
}

.week-header.current-week {
  color: var(--primary);
}

.cycle-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 2px solid var(--primary-light);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
  margin: 0.25rem 0.5rem 0.25rem 0;
  transition: var(--transition);
}

.cycle-pill:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.cycle-pill .remove {
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  color: var(--gray);
  transition: var(--transition);
  font-size: 1.2rem;
}

.cycle-pill .remove:hover {
  color: var(--danger);
  transform: scale(1.3) rotate(90deg);
}

/* Admin styles */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.admin-table th {
  background: var(--bg);
  padding: 0.75rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray);
  border-bottom: 2px solid var(--border);
}

.admin-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.admin-table tr:hover {
  background: var(--bg);
}

.admin-table select,
.admin-table input[type="checkbox"] {
  cursor: pointer;
}

.admin-table .btn-icon {
  margin: 0 0.25rem;
}

/* Modal styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.3s ease;
}

.modal-content h3 {
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
  color: var(--dark);
}

/* Profile section styles */
#profile-section .card {
  height: fit-content;
}

#profile-section input:disabled {
  background: var(--bg);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Footer - Enhanced */
footer {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--gray);
  font-size: 0.9rem;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* Responsive */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .plan-header {
    padding: 2rem;
  }
  
  #plan-title {
    font-size: 2rem;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }
  
  header {
    flex-direction: column;
    gap: 1rem;
    position: relative;
    top: 0;
  }
  
  nav {
    width: 100%;
    justify-content: space-between;
  }
  
  nav button {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
  }
  
  .user-menu {
    display: none;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .plan-header {
    padding: 1.5rem;
  }
  
  #plan-title {
    font-size: 1.5rem;
  }
  
  #plan-desc {
    font-size: 1rem;
  }
  
  .day-col {
    width: 200px;
    min-width: 200px;
  }
  
  .admin-table {
    font-size: 0.8rem;
  }
  
  .admin-table th,
  .admin-table td {
    padding: 0.5rem;
  }
}

/* Loading animation */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Add smooth transitions for all interactive elements */
* {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}