/* --- デザインシステム & 変数 --- */
:root {
  --bg-deep: #0a0b10;
  --bg-dark: #121420;
  --accent-neon-blue: #00F5FF;
  --accent-purple: #8A2BE2;
  --accent-gold: #FAD02C;
  --text-primary: #FFFFFF;
  --text-secondary: #8E92A4;
  --card-bg: rgba(18, 20, 32, 0.6);
  --card-border: rgba(255, 255, 255, 0.08);
  --font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-family);
  overflow-x: hidden;
  min-height: 100vh;
}

/* オーロラ背景演出 */
.aurora-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: radial-gradient(circle at 10% 20%, rgba(138, 43, 226, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(0, 245, 255, 0.12) 0%, transparent 40%);
  filter: blur(80px);
  pointer-events: none;
}

/* アプリコンテナ */
.app-container {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  position: relative;
  background-color: rgba(10, 11, 16, 0.95);
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
}

/* ページ切り替え */
.page {
  display: none;
  flex: 1;
  flex-direction: column;
  animation: fadeIn 0.4s ease;
}

.page.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ガラスモルフィズムカード */
.card.glass {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.card.glass:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ヘッダー */
.main-header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--card-border);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(45deg, var(--accent-neon-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-area i {
  color: var(--accent-neon-blue);
  -webkit-text-fill-color: initial;
}

.user-status {
  display: flex;
  gap: 12px;
  font-size: 0.9rem;
}

#user-points {
  background: rgba(250, 208, 44, 0.15);
  color: var(--accent-gold);
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 700;
}

.text-gold {
  color: var(--accent-gold);
}

/* ナビゲーションバー */
.bottom-nav {
  position: sticky;
  bottom: 0;
  display: flex;
  background: rgba(18, 20, 32, 0.9);
  border-top: 1px solid var(--card-border);
  backdrop-filter: blur(10px);
  padding: 10px 0;
  z-index: 100;
}

.nav-item {
  flex: 1;
  border: none;
  background: none;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.75rem;
  gap: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-item i {
  font-size: 1.25rem;
}

.nav-item.active {
  color: var(--accent-neon-blue);
  text-shadow: 0 0 10px rgba(0, 245, 255, 0.3);
}

/* ログイン画面 */
#auth-page {
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  padding: 30px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  border-radius: 24px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.auth-card .logo {
  font-size: 3rem;
  margin-bottom: 8px;
  background: linear-gradient(45deg, var(--accent-neon-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.auth-card .logo i {
  color: var(--accent-neon-blue);
  -webkit-text-fill-color: initial;
}

.auth-card h1 {
  font-weight: 800;
  margin-top: 5px;
}

.auth-card .subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.auth-tabs {
  display: flex;
  background: rgba(255,255,255,0.05);
  border-radius: 30px;
  padding: 4px;
  margin-bottom: 24px;
}

.tab-btn {
  flex: 1;
  padding: 10px 0;
  border-radius: 26px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  background: var(--accent-purple);
  color: var(--text-primary);
  box-shadow: 0 4px 15px rgba(138, 43, 226, 0.4);
}

.input-group {
  text-align: left;
  margin-bottom: 16px;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.input-group input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.input-group input:focus {
  border-color: var(--accent-neon-blue);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
}

/* ボタン各種 */
.btn-primary {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(45deg, var(--accent-purple), #9400D3);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary-neon {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(45deg, var(--accent-neon-blue), var(--accent-purple));
  color: var(--text-primary);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 245, 255, 0.25);
  transition: var(--transition);
}

.btn-primary-neon:hover {
  box-shadow: 0 4px 20px rgba(0, 245, 255, 0.4);
}

.btn-gold {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(45deg, var(--accent-gold), #FF8C00);
  color: #000;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-danger {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: none;
  background: #FF3B30;
  color: white;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

/* 睡眠スコアリング */
.score-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.score-circle-container {
  position: relative;
  margin: 15px 0;
}

.score-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

#dashboard-score {
  font-size: 3rem;
  font-weight: 800;
}

.score-unit {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.progress-ring__circle {
  transition: stroke-dashoffset 0.8s ease-in-out;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

/* 睡眠記録フォーム */
.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.form-group {
  flex: 1;
  margin-bottom: 12px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.03);
  color: white;
}

/* 履歴テーブル */
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.history-table th, .history-table td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

.history-table th {
  color: var(--text-secondary);
}

/* デイリーミッションリスト */
.mission-item-mini {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

.m-title-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.m-title-area i {
  color: var(--accent-neon-blue);
}

.m-title-area.completed i {
  color: #00FF00;
}

.m-title-area.completed span {
  text-decoration: line-through;
  color: var(--text-secondary);
}

/* ランキング */
.ranking-item {
  display: flex;
  align-items: center;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
  margin-bottom: 8px;
  gap: 12px;
}

.rank-num {
  font-weight: 800;
  width: 24px;
  text-align: center;
}

.rank-1 .rank-num { color: #FFD700; font-size: 1.2rem; }
.rank-2 .rank-num { color: #C0C0C0; font-size: 1.1rem; }
.rank-3 .rank-num { color: #CD7F32; font-size: 1rem; }

.rank-username {
  flex: 1;
}

/* おみくじ */
#fortune-badge {
  display: inline-block;
  font-size: 1.8rem;
  font-weight: 800;
  padding: 8px 24px;
  border-radius: 10px;
  margin-bottom: 12px;
  box-shadow: 0 0 15px rgba(255,255,255,0.2);
}

/* プロフィール */
.profile-card {
  text-align: center;
  padding: 40px 20px;
}

.profile-avatar {
  font-size: 4rem;
  color: var(--accent-neon-blue);
  margin-bottom: 15px;
}

.profile-stats {
  display: flex;
  justify-content: center;
  margin: 20px 0 30px;
}

.p-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.p-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-gold);
}

.p-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* トースト & ローディング */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(18, 20, 32, 0.95);
  border: 1px solid var(--accent-neon-blue);
  color: white;
  padding: 12px 24px;
  border-radius: 12px;
  z-index: 1000;
  font-size: 0.9rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: opacity 0.3s;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(10, 11, 16, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-neon-blue);
  border-radius: 50%;
  animation: spin 1s infinite linear;
}

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

.hidden {
  display: none !important;
}

/* メインコンテンツ配置 */
.main-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  padding-bottom: 40px;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

.stats-row {
  display: flex;
  gap: 16px;
  justify-content: space-around;
  margin: 10px 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-neon-blue);
}

.stat-value small {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}