/* ========================================================
   湖東國小 一年五班 大海進化 - 共用樣式
   ======================================================== */

:root {
  --primary: #0288D1;
  --primary-dark: #01579B;
  --accent: #FFD700;
  --text-light: #F0F9FF;
  --text-dark: #1E293B;
  --font-family: "Noto Sans TC", system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background: #021B33;
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 氣泡背景動畫（首頁與後台） ===== */
.bubble-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.bubble {
  position: absolute;
  bottom: -60px;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.15));
  border-radius: 50%;
  box-shadow: inset 0 0 8px rgba(255, 255, 255, 0.4);
  animation: floatUp 8s infinite linear;
}

@keyframes floatUp {
  0% {
    transform: translateY(0) scale(0.8);
    opacity: 0.2;
  }
  50% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(-110vh) scale(1.2);
    opacity: 0;
  }
}

/* ===== 首頁樣式 (index.php) ===== */
.home-page {
  background: linear-gradient(180deg, #1A4D80 0%, #0E294B 60%, #061325 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  position: relative;
  text-align: center;
  padding: 20px;
}

.home-container {
  position: relative;
  z-index: 10;
  max-width: 720px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 32px;
  padding: 48px 36px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.home-title {
  font-size: 42px;
  font-weight: 900;
  color: #FFF;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.home-subtitle {
  font-size: 24px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 24px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.home-desc {
  font-size: 16px;
  line-height: 1.8;
  color: #E0F2FE;
  margin-bottom: 36px;
}

.home-btn-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.main-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.btn-ocean {
  background: linear-gradient(135deg, #00E5FF 0%, #0077B6 100%);
  color: #03213B;
  border: 2px solid #E0F7FA;
}

.btn-ocean:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 28px rgba(0, 229, 255, 0.5);
}

.btn-admin {
  background: rgba(255, 255, 255, 0.15);
  color: #FFF;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-admin:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-4px);
  border-color: #FFD700;
  color: #FFD700;
}

/* ===== 大海環境 (ocean.php) ===== */
.ocean-page {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

#ocean-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* 左上角抬頭導覽區 */
.ocean-hud {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 20, 50, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 8px 18px;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.ocean-hud-title {
  font-size: 17px;
  font-weight: 800;
  color: #FFF;
  letter-spacing: 0.5px;
}

.theme-badge {
  font-size: 13px;
  font-weight: 700;
  background: rgba(255, 215, 0, 0.2);
  color: #FFD700;
  border: 1px solid rgba(255, 215, 0, 0.5);
  padding: 3px 10px;
  border-radius: 12px;
}

.hud-btn {
  background: rgba(255, 255, 255, 0.15);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.2s ease;
  cursor: pointer;
}

.hud-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

/* ===== 後台管理頁 (admin.php) ===== */
.admin-page {
  padding: 32px 24px;
  background: linear-gradient(180deg, #091D34 0%, #030E1C 100%);
  min-height: 100vh;
}

.admin-container {
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.admin-title {
  font-size: 28px;
  font-weight: 800;
  color: #FFD700;
}

.admin-actions {
  display: flex;
  gap: 12px;
}

.btn-danger {
  background: linear-gradient(135deg, #EF4444 0%, #B91C1C 100%);
  color: #FFF;
  border: 1px solid #FCA5A5;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-danger:hover {
  background: #DC2626;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #FFF;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* 登入卡片 */
.login-card {
  max-width: 420px;
  margin: 80px auto;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 20px;
  padding: 36px 30px;
  text-align: center;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.login-card h2 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #FFD700;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: #90CAF9;
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.3);
  color: #FFF;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: #00E5FF;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

/* 統計卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  padding: 18px 20px;
  border-radius: 14px;
}

.stat-label {
  font-size: 13px;
  color: #90CAF9;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 26px;
  font-weight: 800;
  color: #FFF;
}

/* 魚列表表格 */
.table-wrapper {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.admin-table th {
  background: rgba(255, 255, 255, 0.1);
  color: #90CAF9;
  padding: 14px 18px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.admin-table td {
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: #E2E8F0;
}

.admin-table tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

.stage-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 12px;
}

.color-dot {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
  border: 1px solid rgba(255, 255, 255, 0.4);
}