/* ============================================================
   喜帖資訊填寫頁面專屬樣式
   (繼承全域變數：--primary-gold, --dark-charcoal, --bg-cream, --text-muted)
============================================================ */

:root {
  --input-bg: #FAFAFA;
  --input-border: #EAE5DD;
}

/* 頁首標題與步驟指示 */
.page-header {
  text-align: center;
  padding: 2rem 0 1.5rem;
}
.page-title {
  font-size: 2.2rem;
  color: var(--dark-charcoal);
  margin-bottom: 0.6rem;
}
.page-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 1.8rem;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.step-item {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  opacity: 0.6;
}
.step-item.active {
  color: var(--primary-gold);
  opacity: 1;
  font-weight: 500;
}
.step-line {
  width: 40px;
  height: 1px;
  background-color: var(--input-border);
}
@media (max-width: 576px) {
  .step-line { width: 20px; }
  .page-title { font-size: 1.8rem; }
}

/* 表單容器 */
.form-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 卡片 */
.premium-card {
  background: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.03);
  padding: 2.5rem 3rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(234, 229, 221, 0.5);
  transition: box-shadow 0.3s ease;
}
.premium-card:hover {
  box-shadow: 0 12px 40px rgba(197, 168, 128, 0.06);
}
@media (max-width: 768px) {
  .premium-card {
    padding: 2rem 1.5rem;
    border-radius: 8px;
  }
}

.section-title {
  font-family: 'Noto Serif TC', serif;
  font-size: 1.25rem;
  color: var(--dark-charcoal);
  margin-bottom: 1.8rem;
  display: flex;
  align-items: center;
}
.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background-color: var(--primary-gold);
  margin-right: 12px;
  border-radius: 2px;
}

/* 表單元素 */
.form-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.form-control,
.form-select {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  color: var(--dark-charcoal);
  box-shadow: none;
  transition: all 0.3s ease;
}
.form-control::placeholder {
  color: #C4C4C4;
  font-weight: 300;
}
.form-control:focus,
.form-select:focus {
  background-color: #FFFFFF;
  border-color: var(--primary-gold);
  box-shadow: 0 0 0 3px rgba(197, 168, 128, 0.15);
  outline: none;
}
textarea.form-control {
  min-height: 100px;
  resize: vertical;
}
.field-hint {
  font-size: 0.75rem;
  color: #A0A0A0;
  margin-top: 0.3rem;
  letter-spacing: 0.02em;
}

#chinese-fields,
#envelope_details_area,
#delivery-info-fields {
  animation: fadeIn 0.5s ease-out;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.envelope-inner-box {
  background-color: rgba(253, 251, 247, 0.8);
  border: 1px dashed var(--primary-gold);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 1rem;
}
.envelope-inner-title {
  font-size: 0.9rem;
  color: var(--primary-gold);
  font-weight: 700;
  margin-bottom: 1rem;
}

/* 提交按鈕 */
.btn-submit-premium {
  background-color: #F3B7BE;
  color: #FFFFFF;
  border: none;
  width: 100%;
  padding: 0.55rem 1rem;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(243, 183, 190, 0.3);
  transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.btn-submit-premium:hover {
  background-color: #E5A3AA;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(229, 163, 170, 0.45);
}
.btn-submit-premium:active {
  transform: scale(0.98) translateY(-1px);
}
.btn-submit-premium:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(243, 183, 190, 0.4);
}
.btn-submit-premium:disabled {
  background-color: #E0D5D6;
  color: #FFFFFF;
  transform: none;
  box-shadow: none;
  cursor: not-allowed;
}

.btn-outline-gold {
  display: inline-block;
  width: 100%;
  text-align: center;
  border: 1px solid var(--primary-gold);
  color: var(--primary-gold);
  background: transparent;
  padding: 0.8rem 1.5rem;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  border-radius: 6px;
  transition: all 0.3s ease;
  text-decoration: none;
}
.btn-outline-gold:hover {
  background-color: var(--primary-gold);
  color: #FFF !important;
}

/* 成功 Modal */
#successModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(43, 43, 43, 0.7);
  backdrop-filter: blur(5px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}
.modal-content-premium {
  background: #FFFFFF;
  padding: 3rem 2rem;
  border-radius: 12px;
  text-align: center;
  max-width: 90%;
  width: 450px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  position: relative;
  border-top: 5px solid var(--primary-gold);
}
.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.8rem;
  color: #CCC;
  cursor: pointer;
  transition: color 0.3s ease;
  line-height: 1;
}
.modal-close-btn:hover {
  color: var(--dark-charcoal);
}
.success-icon {
  font-size: 3rem;
  color: #06C755;
  margin-bottom: 1.5rem;
}
.btn-line-join {
  background-color: #06C755;
  color: white;
  padding: 0.8rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
  margin-top: 1.5rem;
  letter-spacing: 0.05em;
  transition: background-color 0.3s ease;
}
.btn-line-join:hover {
  background-color: #05b14f;
  color: white;
}

/* 表單內特殊調整 */
.form-select {
  padding-right: 2.5rem !important;
  background-position: right 0.75rem center !important;
}
@media (max-width: 576px) {
  #wedding_day { font-size: 0.85rem; padding-right: 1.8rem !important; }
}
#envelope_print_type { font-size: 0.9rem; }