/* PierreAir Seat Exchange - Premium Airline Aesthetic */

/* ===== CSS VARIABLES ===== */
:root {
  /* PierreAir Brand Colors */
  --airline-navy: #0c1a3a;
  --airline-blue: #1e4b8e;
  --airline-light: #4a90d9;
  --airline-sky: #7eb8e8;
  --airline-gold: #c9a227;
  --airline-cream: #f5f0e6;
  --airline-white: #ffffff;
  --airline-gray: #e8e4dc;
  --airline-dark: #060d1f;
  --airline-red: #c41e3a;

  /* Typography - Poppins for headers, Inter for body */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 600ms ease;
}

/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(135deg, var(--airline-dark) 0%, var(--airline-navy) 100%);
  color: var(--airline-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  /* Reduced from md */
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  /* Reduced from md */
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

/* ===== WELCOME SCREEN ===== */
#welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 600px;
  width: 100%;
  text-align: center;
  animation: fadeIn 0.6s ease;
}

/* Airline Brand Header */
.airline-brand {
  margin-bottom: var(--spacing-xl);
}

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: var(--spacing-xs);
}

.wing-icon {
  color: var(--airline-gold);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
  transform: rotate(-35deg);
}

.wing-icon-small {
  color: var(--airline-gold);
  transform: rotate(-35deg);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--airline-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand-tagline {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--airline-gold);
  font-style: italic;
  letter-spacing: 0.1em;
}

/* Welcome Hero */
.welcome-hero {
  margin-bottom: var(--spacing-lg);
}

.welcome-hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--airline-white);
}

.tagline {
  font-size: 1.1rem;
  color: var(--airline-sky);
  font-weight: 400;
}

/* Welcome Copy */
.welcome-copy {
  max-width: 480px;
  margin-bottom: var(--spacing-xl);
}

.welcome-copy p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-md);
}

.welcome-copy p:last-child {
  margin-bottom: 0;
}

/* Welcome Actions */
.welcome-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
  justify-content: center;
}

#start-btn {
  background: linear-gradient(135deg, var(--airline-gold) 0%, #a88620 100%);
  border: none;
  color: var(--airline-dark);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 12px rgba(201, 162, 39, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

#start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 162, 39, 0.5);
}

#start-btn:active {
  transform: translateY(0);
}

.secondary-btn {
  background: transparent;
  border: 2px solid var(--airline-light);
  color: var(--airline-white);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--airline-sky);
}

/* Captain Note */
.captain-note {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  max-width: 480px;
  text-align: left;
}

.captain-avatar {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--airline-gold);
  color: var(--airline-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.captain-message {
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.8);
}

.captain-message strong {
  display: block;
  color: var(--airline-white);
  margin-bottom: var(--spacing-xs);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== TRADE SCREEN ===== */
#trade-screen {
  display: none;
  flex-direction: column;
  align-items: center;
  max-width: 1000px;
  width: 100%;
  animation: fadeIn 0.6s ease;
}

.trade-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.trade-header-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.trade-header-right {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.mini-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--airline-gold);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.wing-icon-small {
  color: var(--airline-gold);
}

.trade-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--airline-white);
}

.trade-counter {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--airline-sky);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.trade-instruction {
  text-align: center;
  color: var(--airline-sky);
  font-size: 0.85rem;
  opacity: 0.8;
}

.trade-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  width: 100%;
  margin-bottom: var(--spacing-lg);
}

.seat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--airline-blue);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.seat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--airline-blue) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.seat-card:hover::before {
  opacity: 0.1;
}

.seat-card:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.3);
  border-color: var(--airline-light);
}

.seat-card.disabled {
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== CABIN DIAGRAM ===== */
.cabin-diagram {
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.config-label {
  font-size: 0.75rem;
  color: var(--airline-light);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cabin-layout {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
  /* Extra right padding for exit marker */
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.seat-row {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
  position: relative;
}

.seat {
  width: 32px;
  height: 36px;
  background: linear-gradient(135deg, #c0c0c0 0%, #e0e0e0 100%);
  border: 1.5px solid #999;
  border-radius: 6px 6px 3px 3px;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.15);
  transition: all var(--transition-base);
}

.seat.highlight {
  /* Removed width/height change to prevent layout shift */
  background: linear-gradient(135deg, var(--airline-blue) 0%, var(--airline-light) 100%);
  border: 3px solid var(--airline-gold);
  box-shadow: 0 0 25px var(--airline-blue), 0 0 40px rgba(251, 191, 36, 0.5);
  border-radius: 8px 8px 4px 4px;
  transform: scale(1.3);
  /* Increased scale for visibility since size doesn't change */
  z-index: 100;
  /* Ensure it stays on top */
}

.seat.exit-row-seat {
  background: linear-gradient(135deg, #a8d5ba 0%, #c8e6d0 100%);
  border-color: #6b9978;
}

.seat.bulkhead-seat {
  background: linear-gradient(135deg, #d4b8e0 0%, #e8d5f0 100%);
  border-color: #9876a8;
}

.aisle {
  width: 24px;
  height: 36px;
  border-left: 1px dashed rgba(255, 255, 255, 0.15);
  border-right: 1px dashed rgba(255, 255, 255, 0.15);
}

.exit-marker {
  position: absolute;
  right: -45px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6rem;
  font-weight: 700;
  color: #10b981;
  background: rgba(16, 185, 129, 0.15);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid #10b981;
  letter-spacing: 0.05em;
}

.lavatory-icon {
  position: absolute;
  bottom: -30px;
  font-size: 1.5rem;
  opacity: 0.7;
}

.seat-label {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--airline-light);
  text-align: center;
}

/* ===== SEAT INFO CARD ===== */
.seat-info-card {
  text-align: center;
  margin-top: var(--spacing-md);
}

.seat-info-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--airline-white);
}

.seat-rating {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--airline-light);
  opacity: 0.8;
}

/* ===== RANKINGS MODAL ===== */
#rankings-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(6, 13, 31, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: var(--spacing-lg);
  overflow-y: auto;
  animation: fadeIn var(--transition-base);
}

.rankings-content {
  background: linear-gradient(180deg, var(--airline-dark) 0%, var(--airline-navy) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 700px;
  width: 100%;
  margin: var(--spacing-lg) 0;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
}

.rankings-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.rankings-header-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.rankings-title {
  font-size: 1.6rem;
  color: var(--airline-white);
  margin-bottom: 0;
}

.rankings-subtitle {
  font-size: 0.85rem;
  color: var(--airline-gold);
  font-style: italic;
  margin: 0;
}

#close-rankings {
  background: none;
  border: none;
  color: var(--airline-white);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-base);
  opacity: 0.7;
}

#close-rankings:hover {
  background: rgba(255, 255, 255, 0.1);
  opacity: 1;
}

/* Config Selector Section */
.rankings-config-section {
  margin-bottom: var(--spacing-md);
}

.config-selector-label {
  display: block;
  font-size: 0.75rem;
  color: var(--airline-sky);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

/* Config Selector Tabs */
.rankings-config-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.config-tab {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--airline-sky);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-mono);
}

.config-tab:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.config-tab.active {
  background: var(--airline-gold);
  border-color: var(--airline-gold);
  color: var(--airline-dark);
  font-weight: 700;
}

.rankings-config-info {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.rankings-config-info .config-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--airline-white);
  margin-bottom: var(--spacing-xs);
}

.rankings-config-info .config-desc {
  font-size: 0.8rem;
  color: var(--airline-sky);
}

#rankings-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.rank-item {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-md);
  background: rgba(255, 255, 255, 0.03);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.rank-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

.rank-item.tier-gold {
  border-color: rgba(201, 162, 39, 0.4);
  background: rgba(201, 162, 39, 0.08);
}

.rank-item.tier-silver {
  border-color: rgba(156, 163, 175, 0.3);
  background: rgba(156, 163, 175, 0.05);
}

.rank-item.tier-bronze {
  border-color: rgba(194, 65, 12, 0.3);
  background: rgba(194, 65, 12, 0.05);
}

.rank-position {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 50px;
}

.rank-number {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--airline-gold);
}

.rank-medal {
  font-size: 1.2rem;
  margin-top: 2px;
}

/* Seat diagram in rankings */
.rank-diagram {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rank-diagram .cabin-layout {
  transform: scale(0.6);
  transform-origin: center;
  margin: -20px;
  padding: 8px 12px 8px 8px;
}

.rank-diagram .seat {
  width: 20px;
  height: 24px;
}

.rank-diagram .aisle {
  width: 12px;
  height: 24px;
}

.rank-diagram .seat.highlight {
  transform: scale(1.2);
}

.rank-diagram .exit-marker {
  right: -35px;
  font-size: 0.5rem;
  padding: 1px 4px;
}

.rank-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.rank-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--airline-white);
  margin-bottom: var(--spacing-xs);
}

.rank-stats {
  font-size: 0.75rem;
  color: var(--airline-sky);
  font-family: var(--font-mono);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.rank-stats span {
  white-space: nowrap;
}

.no-data {
  text-align: center;
  color: var(--airline-sky);
  padding: var(--spacing-2xl);
  font-size: 0.95rem;
}

.rankings-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.rankings-footer p {
  font-size: 0.8rem;
  color: var(--airline-sky);
  opacity: 0.7;
  margin: 0;
}

/* ===== BUTTONS ===== */
#rankings-btn {
  background: linear-gradient(135deg, var(--airline-gold) 0%, #a88620 100%);
  border: none;
  color: var(--airline-dark);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#rankings-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(201, 162, 39, 0.3);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  body {
    padding: var(--spacing-sm);
    justify-content: flex-start;
  }

  /* Welcome Screen Mobile */
  .brand-name {
    font-size: 1.6rem;
  }

  .welcome-hero h1 {
    font-size: 2rem;
  }

  .welcome-copy {
    padding: 0 var(--spacing-sm);
  }

  .welcome-actions {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
  }

  #start-btn,
  .secondary-btn {
    width: 100%;
  }

  .captain-note {
    margin: 0 var(--spacing-sm);
  }

  /* Compact Trade Header */
  .trade-header {
    margin-bottom: var(--spacing-sm);
    flex-direction: column;
    align-items: flex-start;
  }

  .trade-header-left {
    width: 100%;
  }

  .trade-header-right {
    width: 100%;
    justify-content: space-between;
  }

  .trade-title {
    font-size: 1.2rem;
    width: 100%;
  }

  .mini-brand {
    display: none;
  }

  #rankings-btn {
    padding: 6px 12px;
    font-size: 0.7rem;
  }

  .trade-container {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: var(--spacing-sm);
  }

  .seat-card {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .cabin-layout {
    padding: 8px var(--spacing-xl) 8px 8px;
  }

  .seat {
    width: 28px;
    height: 32px;
  }

  .seat.highlight {
    width: 28px;
    height: 32px;
    transform: scale(1.3);
  }

  .aisle {
    width: 16px;
    height: 32px;
  }

  /* Rankings Mobile */
  .rankings-content {
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
  }

  .rankings-title {
    font-size: 1.3rem;
  }

  .rank-item {
    flex-wrap: wrap;
    padding: var(--spacing-sm);
  }

  .rank-position {
    min-width: 40px;
  }

  .rank-diagram {
    display: none;
  }

  .rank-name {
    font-size: 0.9rem;
  }

  .rank-stats {
    font-size: 0.7rem;
  }

  .seat-info-card {
    margin-top: var(--spacing-xs);
  }

  .seat-info-title {
    font-size: 1rem;
    margin-bottom: 2px;
  }

  .config-label {
    margin-bottom: var(--spacing-xs);
  }

  .trade-instruction {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: 1.4rem;
  }

  .welcome-hero h1 {
    font-size: 1.7rem;
  }

  .trade-title {
    font-size: 1.1rem;
    line-height: 1.2;
  }

  .seat {
    width: 24px;
    height: 28px;
  }

  .seat.highlight {
    width: 24px;
    height: 28px;
  }

  .aisle {
    width: 12px;
    height: 28px;
  }

  .captain-note {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }

  .captain-avatar {
    margin: 0 auto;
  }
}