/* ===========================
   Spread the Wings!! CTF
   283 Production Fan Site
   Shiny Colors Theme
   =========================== */
/* Multicolored Sky */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

:root {
  --sc-primary: #8dbbff;
  --sc-primary-dark: #5a9bff;
  --sc-bg: #f8f9ff;
  --sc-bg-card: #ffffff;
  --sc-text: #2c3e50;
  --sc-text-light: #6c7a8a;

  /* ALSTROEMERIA colors */
  --al-amana: #f54275;
  --al-tenka: #e75bec;
  --al-chiyuki: #fafafa;

  --sc-success: #4caf50;
  --sc-error: #e5461c;

  --shadow-sm: 0 2px 8px rgba(141, 187, 255, 0.15);
  --shadow-md: 0 4px 16px rgba(141, 187, 255, 0.2);
  --shadow-lg: 0 8px 32px rgba(141, 187, 255, 0.25);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;

  /* 283 = つばさ */
  --transition: 0.283s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--sc-bg);
  color: var(--sc-text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ===== Header / Navigation ===== */
.site-header {
  background: linear-gradient(135deg, var(--sc-primary) 0%, var(--al-tenka) 50%, var(--al-amana) 100%);
  color: white;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: shimmer 8s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-30%) translateY(-30%); }
  50% { transform: translateX(30%) translateY(30%); }
}

.header-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 2px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.site-title .at-sign {
  color: #ffe082;
}

.site-subtitle {
  font-size: 0.85rem;
  font-weight: 300;
  opacity: 0.9;
  margin-top: 2px;
}

.header-badge {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.3);
}

/* ===== Progress Bar (Petal Collector) ===== */
.petal-progress {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(141,187,255,0.2);
  padding: 12px 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.petal-progress-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
}

.petal-icon {
  font-size: 1.2rem;
}

.petal-bar-container {
  flex: 1;
  max-width: 283px;
  height: 8px;
  background: #e8ecf4;
  border-radius: 999px;
  overflow: hidden;
}

.petal-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--al-amana), var(--al-tenka), #fad0fa);
  border-radius: 999px;
  transition: width var(--transition);
  width: 0%;
}

.petal-count {
  font-weight: 700;
  color: var(--sc-primary-dark);
  white-space: nowrap;
}

.petal-collected {
  color: var(--sc-text-light);
  font-size: 0.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Stage Banner ===== */
.stage-banner {
  background: var(--sc-bg-card);
  border-bottom: 3px solid var(--sc-primary);
  padding: 20px 32px;
  text-align: center;
}

.stage-banner h2 {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--sc-primary-dark);
  letter-spacing: 3px;
  margin-bottom: 4px;
}

.stage-banner .stage-desc {
  color: var(--sc-text-light);
  font-size: 0.9rem;
}

/* ===== Main Content ===== */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px;
}

/* ===== Idol Cards ===== */
.idol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 24px 0;
}

.idol-card {
  background: var(--sc-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.idol-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.idol-card-image {
  width: 100%;
  height: 283px;
  object-fit: cover;
  display: block;
}

.idol-card-placeholder {
  width: 100%;
  height: 283px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 900;
  color: white;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}

.idol-card-placeholder::after {
  content: attr(data-name);
  position: absolute;
  bottom: 12px;
  right: 16px;
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.9;
}

.idol-card-placeholder.amana {
  background: linear-gradient(135deg, var(--al-amana), #ff7ea3);
}
.idol-card-placeholder.tenka {
  background: linear-gradient(135deg, var(--al-tenka), #c44bd6);
}
.idol-card-placeholder.chiyuki {
  background: linear-gradient(135deg, #e8e8e8, var(--al-chiyuki));
  color: #999;
}

.idol-card-body {
  padding: 20px;
}

.idol-card-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.idol-card-name-jp {
  font-size: 0.85rem;
  color: var(--sc-text-light);
  margin-bottom: 8px;
}

.idol-card-desc {
  font-size: 0.9rem;
  color: var(--sc-text-light);
  line-height: 1.6;
}

.idol-card-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 8px;
}

.idol-card-tag.amana { background: rgba(245,66,117,0.1); color: var(--al-amana); }
.idol-card-tag.tenka { background: rgba(231,91,236,0.1); color: var(--al-tenka); }
.idol-card-tag.chiyuki { background: rgba(150,150,150,0.15); color: #888; }

/* ===== News Section ===== */
.news-section {
  background: var(--sc-bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
  box-shadow: var(--shadow-sm);
}

.news-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--sc-primary);
  display: inline-block;
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid #f0f2f8;
  align-items: baseline;
}

.news-item:last-child { border-bottom: none; }

.news-date {
  color: var(--sc-text-light);
  font-size: 0.8rem;
  white-space: nowrap;
  min-width: 90px;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--sc-primary), var(--sc-primary-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(90,155,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(90,155,255,0.4);
}

.btn-secondary {
  background: var(--sc-bg);
  color: var(--sc-primary-dark);
  border: 2px solid var(--sc-primary);
}
.btn-secondary:hover {
  background: var(--sc-primary);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, var(--sc-success), #66bb6a);
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, var(--sc-error), #ef5350);
  color: white;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== Form Elements ===== */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--sc-text);
}

.form-input {
  width: 100%;
  padding: 10px 16px;
  border: 2px solid #e0e6f0;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--sc-primary);
  box-shadow: 0 0 0 3px rgba(141,187,255,0.2);
}

/* ===== Result Box ===== */
.result-box {
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  margin: 20px 0;
  font-size: 0.95rem;
  display: none;
}

.result-box.show { display: block; }

.result-box.success {
  background: rgba(76,175,80,0.08);
  border: 2px solid var(--sc-success);
  color: #2e7d32;
}

.result-box.error {
  background: rgba(229,70,28,0.08);
  border: 2px solid var(--sc-error);
  color: #c62828;
}

.result-box .fragment {
  font-size: 1.8rem;
  font-weight: 900;
  display: block;
  margin: 8px 0;
  background: linear-gradient(90deg, var(--al-amana), var(--al-tenka));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-box .next-stage {
  margin-top: 12px;
}

.result-box .next-stage a {
  color: var(--sc-primary-dark);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid currentColor;
}

/* ===== Stage 3: Audition Panel ===== */
.audition-panel {
  background: var(--sc-bg-card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-md);
  max-width: 600px;
  margin: 24px auto;
}

.stat-group {
  display: flex;
  gap: 16px;
  margin: 16px 0;
}

.stat-input-group {
  flex: 1;
  text-align: center;
}

.stat-input-group label {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-input-group label.vocal { color: var(--al-amana); }
.stat-input-group label.dance { color: var(--al-tenka); }
.stat-input-group label.visual { color: var(--sc-primary-dark); }

.stat-input {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e6f0;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  transition: border-color var(--transition);
}

.stat-input:focus {
  outline: none;
  border-color: var(--sc-primary);
}

.threshold-info {
  text-align: center;
  padding: 12px;
  background: #fff8e1;
  border-radius: var(--radius-sm);
  margin: 16px 0;
  font-size: 0.85rem;
  color: #f57f17;
}

/* ===== Stage 4: Producer Dashboard ===== */
.trust-bar-container {
  background: #e8ecf4;
  border-radius: 999px;
  height: 28px;
  overflow: hidden;
  position: relative;
  margin: 16px 0;
}

.trust-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--al-amana), var(--al-tenka), var(--sc-primary));
  border-radius: 999px;
  transition: width 0.5s ease;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
}

.trust-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--sc-text-light);
}

.comm-panel {
  background: var(--sc-bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.comm-panel.locked {
  filter: grayscale(0.5);
  opacity: 0.7;
}

.comm-panel.locked::after {
  content: 'Communication Locked';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(2px);
  font-weight: 700;
  color: var(--sc-text-light);
  font-size: 1.1rem;
  letter-spacing: 2px;
}

.comm-panel.unlocked {
  filter: none;
  opacity: 1;
  border: 2px solid var(--sc-success);
}

/* ===== Stage 5: Graduation ===== */
.petal-input-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.petal-input {
  text-align: center;
  padding: 16px 8px;
  font-size: 1.3rem;
  font-weight: 700;
  border: 2px solid #e0e6f0;
  border-radius: var(--radius-sm);
  font-family: inherit;
  transition: border-color var(--transition);
}

.petal-input:focus {
  outline: none;
  border-color: var(--sc-primary);
}

.petal-input.filled {
  border-color: var(--sc-success);
  background: rgba(76,175,80,0.05);
}

.api-response {
  background: #1a1a2e;
  color: #a8e6cf;
  padding: 20px;
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  overflow-x: auto;
  margin: 16px 0;
  white-space: pre-wrap;
  word-break: break-all;
}

.flag-display {
  text-align: center;
  padding: 32px;
  margin: 24px 0;
  background: linear-gradient(135deg, rgba(245,66,117,0.05), rgba(231,91,236,0.05), rgba(141,187,255,0.05));
  border-radius: var(--radius-lg);
  border: 3px solid;
  border-image: linear-gradient(135deg, var(--al-amana), var(--al-tenka), var(--sc-primary)) 1;
}

.flag-display .flag-text {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(90deg, var(--al-amana), var(--al-tenka), var(--sc-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 16px 0;
}

.flag-display .flag-explain {
  font-size: 0.9rem;
  color: var(--sc-text-light);
  margin-top: 8px;
}

/* ===== Profile Card (Stage 2) ===== */
.profile-card {
  background: var(--sc-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: 20px 0;
  border: 1px solid #e8ecf4;
}

.profile-card-header {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background var(--transition);
}

.profile-card-header:hover {
  background: var(--sc-bg);
}

.profile-card-header .idol-name {
  font-weight: 700;
  font-size: 1.05rem;
}

.profile-card-header .expand-icon {
  font-size: 1.2rem;
  transition: transform var(--transition);
}

.profile-card-header.expanded .expand-icon {
  transform: rotate(180deg);
}

.profile-card.special {
  border: 2px solid var(--al-tenka);
  box-shadow: 0 0 20px rgba(231,91,236,0.1);
}

.profile-card-body {
  padding: 0 24px 20px;
  display: none;
}

.profile-card-body.show {
  display: block;
}

.profile-table {
  width: 100%;
  border-collapse: collapse;
}

.profile-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #f0f2f8;
  font-size: 0.9rem;
}

.profile-table td:first-child {
  font-weight: 600;
  color: var(--sc-text-light);
  width: 40%;
}

.encoded-field {
  font-family: 'Courier New', monospace;
  background: #f5f7fb;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  word-break: break-all;
}

/* ===== Tooltip ===== */
.tooltip {
  position: relative;
  cursor: help;
  border-bottom: 1px dashed var(--sc-text-light);
}

.tooltip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: white;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

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

/* ===== Footer ===== */
.site-footer {
  background: white;
  border-top: 1px solid #e8ecf4;
  padding: 24px 32px;
  text-align: center;
  margin-top: 48px;
  position: relative;
}

.site-footer .footer-text {
  font-size: 0.8rem;
  color: var(--sc-text-light);
}

.site-footer .footer-hidden {
  color: var(--al-chiyuki);
  font-size: 0.75rem;
  margin-top: 4px;
  user-select: all;
}

.site-footer a {
  color: var(--sc-primary-dark);
  text-decoration: none;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .idol-grid {
    grid-template-columns: 1fr;
  }

  .stat-group {
    flex-direction: column;
  }

  .petal-input-group {
    grid-template-columns: repeat(2, 1fr);
  }

  .petal-progress-inner {
    flex-wrap: wrap;
    gap: 8px;
  }

  .main-content {
    padding: 20px 16px;
  }
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ===== Confetti (Stage 5 celebration) ===== */
.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  top: -10px;
  animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
  to {
    top: 110vh;
    transform: rotate(720deg);
  }
}

/* ===== Easter egg: 283 ===== */
.site-header { min-height: 2.83em; }
.idol-card { border-radius: calc(var(--radius) + 0.283px); }