/* 首頁美化樣式 - 聖若瑟教區中學第五校 */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #2dd4bf;
  --accent: #f59e0b;
  --accent-blue: #0284c7;
  --danger: #dc2626;
  --text-dark: #1f2937;
  --text-muted: #6b7280;
  --bg-card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-lg: 16px;
}

html {
  font-size: 150%;
}

body {
  font-family: "Microsoft JhengHei", "微軟正黑體", Helvetica, "Droid Sans Mono", sans-serif;
  font-size: 0.875rem;
  background: linear-gradient(135deg, #f0fdfa 0%, #e0f2fe 50%, #fef3c7 100%);
  min-height: 100vh;
  color: var(--text-dark);
  letter-spacing: 0.5px;
}

/* 頂部校區區塊 */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #14b8a6 100%);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 24px 20px 32px;
  margin: 0;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.page-header .school-logo {
  width: 56px;
  height: 66px;
  margin: 0 auto 12px;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.page-header .school-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
  margin: 0 0 4px;
}

.page-header .school-name-en {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
  font-weight: 400;
}

/* 主內容區 */
.main-content {
  max-width: 480px;
  margin: -16px auto 24px;
  padding: 0 16px;
  position: relative;
  z-index: 2;
}

.content-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px 24px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.8);
}

/* 學年與標題 */
.year-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 6px;
  line-height: 1.4;
}

.section-subtitle {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin: 0 0 20px;
}

/* 表單指引 */
.form-guide {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #fff;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

/* 表單輸入 */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  font-size: 1rem;
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: 14px 18px;
  font-size: 1rem;
  line-height: 1.5;
  border: 2px solid #e5e7eb;
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #f9fafb;
  box-sizing: border-box;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
  background: #fff;
}

.form-control::placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 滑塊驗證 */
#slide_box {
  width: 100%;
  height: 54px;
  text-align: center;
  line-height: 54px;
  font-size: 15px;
  color: var(--text-muted);
  background: linear-gradient(90deg, #f3f4f6 0%, #e5e7eb 100%);
  border: 2px solid #e5e7eb;
  margin: 20px 0 8px;
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

#slide_xbox {
  width: 50px;
  height: 50px;
  text-align: center;
  line-height: 54px;
  font-size: 22px;
  color: var(--primary);
  position: absolute;
  left: 0;
  top: 0;
  background: linear-gradient(135deg, #ccfbf1 0%, #99f6e4 100%);
  border-radius: 22px;
  /* border: 2px solid var(--primary-light); */
  box-shadow: var(--shadow);
  transition: width 0.15s ease;
}

#btnyz {
  cursor: pointer;
  width: 46px;
  height: 46px;
  float: right;
  margin: 1px 3px;
  box-shadow: var(--shadow);
  border-radius: 50%;
  transition: transform 0.2s;
  position: relative;
  overflow: hidden;
}

#btnyz:hover {
  transform: scale(1.02);
}

#btnyz::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fca5a5 0%, #ef4444 55%, #dc2626 100%);
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.08),
    0 0 0 3px rgba(45, 212, 191, 0.45);
  z-index: 0;
}

#btnyz::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  border-radius: 4px;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(255,255,255,0.96) 0 3px,
      rgba(255,255,255,0) 3px 6px
    );
  filter: drop-shadow(0 1px 0 rgba(255,255,255,0.5));
  z-index: 1;
}

#btnyz i {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  pointer-events: none;
}

#btnyz.success::before {
  background: radial-gradient(circle at 30% 30%, #bbf7d0 0%, #22c55e 55%, #16a34a 100%);
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.08),
    0 0 0 3px rgba(45, 212, 191, 0.4);
}

#btnyz.success::after {
  opacity: 0;
}

#at {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
  text-align: center;
}

/* 錯誤提示 */
.required-tips, .label-danger {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border-radius: 8px;
  width: 100%;
  margin-top: 6px;
  box-shadow: var(--shadow-sm);
}

/* 按鈕區 */
.btn-group-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.btn-next {
  flex: 1;
  min-width: 140px;
  padding: 14px 20px;
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff !important;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-align: center;
  text-decoration: none !important;
  box-shadow: var(--shadow);
}

.btn-next:hover,
.btn-next:active,
.btn-next:focus {
  text-decoration: none !important;
}

.btn-next:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(13, 148, 136, 0.4);
  color: #fff !important;
}

/* 有效格式：藍色（僅顏色變化，尺寸不變） */
.btn-next.check-agreement {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  box-shadow: var(--shadow);
}

.btn-next.check-agreement:hover {
  box-shadow: 0 6px 12px rgba(2, 132, 199, 0.4);
}

/* 非本地證件格式提示：淺灰藍（僅顏色變化，尺寸不變） */
.btn-next.btn-next--warning {
  background: linear-gradient(135deg, #64748b 0%, #475569 100%);
  box-shadow: var(--shadow);
}

.btn-next.btn-next--warning:hover {
  box-shadow: 0 6px 12px rgba(100, 116, 139, 0.4);
}

.btn-back {
  flex: 1;
  min-width: 140px;
  padding: 14px 20px;
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, #64748b 0%, #475569 100%);
  color: #fff !important;
  border: none;
  border-radius: var(--radius);
  text-align: center;
  text-decoration: none !important;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow);
}

.btn-back:hover,
.btn-back:active,
.btn-back:focus {
  text-decoration: none !important;
}

.btn-back:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(100, 116, 139, 0.4);
  color: #fff !important;
}

/* 底部聯絡區 */
.page-footer {
  background: linear-gradient(135deg, #2dd4bf 0%, var(--primary) 50%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 24px 20px;
  margin-top: 24px;
  text-align: center;
  color: #fff;
  font-size: 1rem;
  line-height: 1.6;
  box-shadow: 0 -4px 15px rgba(0,0,0,0.08);
}

.page-footer a {
  color: #fff;
  font-weight: 600;
}

/* 響應式 */
@media (max-width: 480px) {
  .page-header {
    padding: 20px 16px 28px;
  }
  
  .page-header .school-name {
    font-size: 1.3rem;
  }
  
  .content-card {
    padding: 20px 16px;
  }
  
  .btn-group-row {
    flex-direction: column;
  }
  
  .btn-next, .btn-back {
    width: 100%;
  }
}