/* @import Google Font Inter for a clean, modern geometric feel */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Dark Mode Variables (Default) */
  --bg-app: #0b0f19;
  --bg-card: rgba(22, 28, 45, 0.45);
  --bg-card-hover: rgba(22, 28, 45, 0.6);
  --border-card: rgba(255, 255, 255, 0.05);
  --border-card-hover: rgba(56, 189, 248, 0.2);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent: #38bdf8;
  --accent-rgb: 56, 189, 248;
  --accent-hover: #7dd3fc;
  --accent-bg-glow: rgba(56, 189, 248, 0.05);
  
  --input-bg: rgba(15, 23, 42, 0.6);
  --input-border: rgba(255, 255, 255, 0.1);
  --input-text: #f8fafc;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  
  --glass-blur: 12px;
}

[data-theme="light"] {
  /* Light Mode Variables */
  --bg-app: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.85);
  --border-card: rgba(15, 23, 42, 0.06);
  --border-card-hover: rgba(2, 132, 199, 0.25);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent: #0284c7;
  --accent-rgb: 2, 132, 199;
  --accent-hover: #0369a1;
  --accent-bg-glow: rgba(2, 132, 199, 0.05);
  
  --input-bg: rgba(255, 255, 255, 0.9);
  --input-border: rgba(15, 23, 42, 0.12);
  --input-text: #0f172a;
  
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.04), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
}

/* Reset & Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  padding-bottom: 4rem;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-card);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* App Wrapper Container */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
}

/* 1. Header Styling */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-card);
}

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

.brand-logo {
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.65rem;
  background-color: var(--accent-bg-glow);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.15rem 0.4rem;
  border-radius: 9999px;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  background-color: var(--accent-bg-glow);
  color: var(--accent);
}

/* Logout button */
.logout-btn {
  background: none;
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}
.logout-btn:hover {
  border-color: rgba(239,68,68,0.5);
  color: #f87171;
  background: rgba(239,68,68,0.08);
}

/* Profile Avatar Section */
.profile-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 0.35rem 0.75rem;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all 0.3s ease;
}

.profile-section:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-1px);
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.user-points {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 500;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--accent);
  background-color: var(--border-card);
}

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

/* Mobile: leaderboard floats above matches via order */
.leaderboard-section { order: -1; } /* first on mobile */
.matches-section     { order:  0; } /* second on mobile */

/* Desktop: natural two-column layout, matches left, leaderboard right */
@media (min-width: 992px) {
  .dashboard-grid {
    grid-template-columns: 1fr 380px;
  }
  .leaderboard-section { order: 0; } /* reset — DOM order applies (matches then leaderboard) */
  .matches-section     { order: 0; }
}

/* Day Navigation Bar */
.day-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--border-radius-md);
  padding: 0.5rem 0.75rem;
  gap: 0.5rem;
}

.day-nav-label {
  flex: 1;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.day-nav-label small {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-muted);
  display: block;
  margin-top: 1px;
}

.day-nav-btn {
  background: none;
  border: 1px solid var(--border-card);
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}
.day-nav-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}
.day-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Grid Sections & Navigation Tabs */
.matches-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 16px;
  background-color: var(--accent);
  border-radius: 2px;
}

/* Tabs for filtering */
.filter-tabs-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.filter-tabs {
  display: flex;
  gap: 0.3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 0.25rem;
  border-radius: var(--border-radius-md);
  width: max-content;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.tab-btn.active {
  background-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* Collapsible group sub-filter row */
.group-subfilter {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  padding: 0 0.25rem;
  transition: max-height 0.3s ease, opacity 0.25s ease, margin-top 0.3s ease, padding 0.3s ease;
}

.group-subfilter.open {
  max-height: 80px;
  opacity: 1;
  margin-top: 0.5rem;
  padding: 0.3rem 0.25rem;
}

.group-sub-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  font-family: inherit;
}

.group-sub-btn:hover {
  color: var(--text-primary);
  border-color: rgba(var(--accent-rgb), 0.4);
}

.group-sub-btn.active {
  background-color: rgba(var(--accent-rgb), 0.15);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}


/* 2. Match Cards & Glassmorphism */
.match-cards-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.match-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--border-radius-md);
  padding: 1.25rem 1.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.match-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-card-hover);
  box-shadow: 0 10px 25px -10px rgba(0, 0, 0, 0.3);
}

.match-info-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.match-date-badge {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
}

.match-stage-badge {
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  background-color: var(--border-card);
  padding: 0.15rem 0.5rem;
  border-radius: var(--border-radius-sm);
}

/* Match Card Teams Grid */
.match-teams-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

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

.team.home {
  justify-content: flex-end;
  text-align: right;
}

.team.away {
  justify-content: flex-start;
  text-align: left;
}

.team-flag {
  width: 32px;
  height: 24px;
  border-radius: 4px;
  object-fit: cover;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.2s ease;
}

.match-card:hover .team-flag {
  transform: scale(1.05);
}

.team-name {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

/* Prediction Score Input Styling */
.score-inputs-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.score-input-wrapper {
  position: relative;
}

.score-input {
  width: 44px;
  height: 44px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--border-radius-sm);
  color: var(--input-text);
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  outline: none;
  transition: all 0.25s ease;
  appearance: none;
  -moz-appearance: textfield;
}

.score-input::-webkit-outer-spin-button,
.score-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.score-input:focus {
  border-color: var(--accent);
  background-color: rgba(var(--accent-rgb), 0.03);
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.15);
}

.score-divider {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-muted);
}

/* Tipping States (Saved tip display, actual result display) */
.prediction-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-card);
  padding-top: 1rem;
  margin-top: 0.5rem;
}

.status-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.status-label.predicted {
  color: var(--accent);
}

.btn-save-tip {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-save-tip:hover {
  background: var(--accent);
  color: #000;
}

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

.actual-result-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: var(--border-card);
}

.points-awarded {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background-color: var(--accent-bg-glow);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid rgba(var(--accent-rgb), 0.2);
}

/* 3. Leaderboard Styling */
.leaderboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: 1.5rem;
}

.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid transparent;
  border-radius: var(--border-radius-sm);
  transition: all 0.25s ease;
}

.leaderboard-item:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border-card);
}

.leaderboard-item.current-user {
  background-color: var(--accent-bg-glow);
  border-color: rgba(var(--accent-rgb), 0.15);
}

.rank {
  width: 24px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.leaderboard-item:nth-child(1) .rank {
  color: #ffd700; /* Gold */
}
.leaderboard-item:nth-child(2) .rank {
  color: #c0c0c0; /* Silver */
}
.leaderboard-item:nth-child(3) .rank {
  color: #cd7f32; /* Bronze */
}

.player-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  margin-right: 0.75rem;
  object-fit: cover;
  background-color: var(--border-card);
}

.player-name {
  font-size: 0.85rem;
  font-weight: 500;
  flex-grow: 1;
}

.leaderboard-item.current-user .player-name {
  font-weight: 600;
}

.player-points {
  font-size: 0.85rem;
  font-weight: 700;
}



/* Custom Alert / Toast styling */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(15, 23, 42, 0.9);
  color: #fff;
  border-left: 4px solid var(--accent);
  padding: 0.85rem 1.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(150%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.toast.show {
  transform: translateY(0);
}

/* Responsive adjustements */
@media (max-width: 576px) {
  .app-header {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  .header-actions {
    justify-content: space-between;
  }
  .match-teams-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    text-align: center;
  }
  .team.home {
    justify-content: center;
    text-align: center;
    flex-direction: row-reverse;
  }
  .team.away {
    justify-content: center;
    text-align: center;
  }
  .score-inputs-container {
    margin: 0.5rem 0;
  }
  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

/* 4. API Loading & Error States */
.loading-container, .error-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--border-radius-md);
  text-align: center;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-card);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

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

.loading-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.error-icon {
  color: #ef4444;
  margin-bottom: 1rem;
}

.error-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.error-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 320px;
}

.btn-retry {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-retry:hover {
  background: var(--accent);
  color: #0b0f19;
}