:root {
  --color-primary: #6a11cb;
  --color-secondary: #2575fc;
  --color-accent: #fbc7d4;
  --color-text: #ffffff;
  --color-text-dark: #2c3e50;
  --color-bg-dark: #1a1a2e;
  --color-bg-light: #e0e0e0;
  --font-family-main: 'Pretendard', sans-serif;
  --noise-texture: url('data:image/svg+xml,...'); /* Placeholder */

  /* Shadows */
  --shadow-deep: 
    0 2.8px 2.2px rgba(0, 0, 0, 0.034),
    0 6.7px 5.3px rgba(0, 0, 0, 0.048),
    0 12.5px 10px rgba(0, 0, 0, 0.06),
    0 22.3px 17.9px rgba(0, 0, 0, 0.072),
    0 41.8px 33.4px rgba(0, 0, 0, 0.086),
    0 100px 80px rgba(0, 0, 0, 0.12);
  --shadow-lifted: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-main);
  background-color: var(--color-bg-dark);
  color: var(--color-text);
  background-image: var(--noise-texture);
  line-height: 1.6;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.app-header {
  text-align: center;
  padding: 6rem 0 4rem;
}

.app-header .logo {
  font-size: 4rem;
  font-weight: 900;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.app-header .subtitle {
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 400;
}

.app-section {
  padding: 5rem 2rem;
  margin-bottom: 4rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  box-shadow: var(--shadow-lifted);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.app-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  color: var(--color-text);
  text-shadow: 0 0 10px var(--color-secondary);
}

.error-message {
  color: #ff7272;
  text-align: center;
  padding: 2rem;
}

.action-button {
    background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
    color: var(--color-text);
    border: none;
    border-radius: 50px;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px rgba(37, 117, 252, 0.3);
}

.action-button:hover, .action-button:focus {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(37, 117, 252, 0.5);
    outline: none;
}

/* Hero Section */
.character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  justify-items: center;
}

.character-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 1.5rem 1rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  width: 100%;
}

.character-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(37, 117, 252, 0.3);
}

.character-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  padding: 5px;
  object-fit: cover;
  margin-bottom: 1rem;
  box-shadow: 0 0 20px rgba(37, 117, 252, 0.5);
}

.character-card p {
  font-weight: 700;
  color: var(--color-accent);
}

/* Generator Section */
.game-modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.game-mode-card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  box-shadow: var(--shadow-lifted);
}

.game-mode-card:hover {
  transform: translateY(-15px) scale(1.03);
  box-shadow: 0 20px 40px rgba(106, 28, 203, 0.4);
}

.game-mode-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  background: linear-gradient(45deg, var(--color-accent), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(251, 199, 212, 0.5);
}

.game-mode-card h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
}

.game-mode-card p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
}

/* League Section */
.hall-of-fame {
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(37, 117, 252, 0.4);
}

.hall-of-fame h3 {
  font-size: 1.8rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hall-of-fame p {
  font-size: 1.1rem;
  color: var(--color-accent);
  font-weight: 500;
}

.league-table-container {
  overflow-x: auto;
}

.league-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.league-table th, .league-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.league-table thead {
  background-color: rgba(255, 255, 255, 0.1);
}

.league-table th {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 1rem;
}

.league-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.league-table tbody tr:first-child {
    background: linear-gradient(90deg, rgba(251, 199, 212, 0.15) 0%, rgba(37, 117, 252, 0.15) 100%);
    font-weight: bold;
}

.matched-number {
  display: inline-block;
  padding: 0.2em 0.5em;
  margin: 0 0.2em;
  background-color: var(--color-accent);
  color: var(--color-bg-dark);
  border-radius: 5px;
  font-weight: 700;
  line-height: 1;
}

/* Annuity Section */
.annuity-generator {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.annuity-character {
    text-align: center;
    flex-shrink: 0;
}

.annuity-character img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(45deg, #8BC6EC, #9599E2);
    padding: 6px;
    box-shadow: 0 0 25px rgba(139, 198, 236, 0.6);
    margin-bottom: 1rem;
}

.annuity-character p {
    font-style: italic;
    color: rgba(255, 255, 255, 0.8);
}

.annuity-result-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

#annuity-numbers {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 1.5rem 2.5rem;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 0.5rem;
    min-width: 400px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background-color 0.3s;
}

.annuity-numbers-placeholder {
    font-size: 1.2rem !important;
    font-weight: 500 !important;
    letter-spacing: normal !important;
    color: rgba(255, 255, 255, 0.6);
}

.annuity-digit-group {
    display: inline-block;
    margin-right: 1.5rem;
}

.annuity-digit-group:last-child {
    margin-right: 0;
}

.app-footer {
  text-align: center;
  padding: 3rem 0;
  font-size: 0.9rem;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
}

@media (max-width: 768px) {
  #app { padding: 0 1rem; }
  .app-header { padding: 4rem 0 3rem; }
  .app-header .logo { font-size: 3rem; }
  .app-header .subtitle { font-size: 1rem; }
  .app-section { padding: 3rem 1.5rem; }
  .app-section h2 { font-size: 2rem; }

  .character-card img {
    width: 100px;
    height: 100px;
  }

  .game-modes-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .league-table th, .league-table td {
    padding: 0.8rem 1rem;
  }
  
  .annuity-generator { flex-direction: column; gap: 2rem; }
  #annuity-numbers { font-size: 1.8rem; min-width: auto; padding: 1rem 1.5rem; letter-spacing: 0.3rem; }
}