:root {
  --primary-color: #2563eb; /* blue-600 */
  --secondary-color: #a21caf; /* purple-700 */
  --accent-color: #38bdf8; /* sky-400 */
  --text-color: #222c36;
  --error-color: #ef4444;
  --success-color: #22c55e;
  --border-radius: 12px;
  --box-shadow: 0 4px 24px rgba(37, 99, 235, 0.08);

  /* Dark mode variables */
  --bg-dark: #181c24;
  --text-dark: #e0e6f0;
  --container-dark: #232a36;
  --border-dark: #334155;
  --input-dark: #232a36;
  --shadow-dark: 0 4px 24px rgba(37, 99, 235, 0.18);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Kanit', sans-serif;
}

body {
  background: linear-gradient(135deg, #f8f9fa 0%, #43b0f1 100%);
  color: var(--text-color);
}

.form-container {
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  border: 1px solid #e0e7ef;
  width: 100%;
  max-width: 550px;
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

h2 {
  color: #7dd3fc; /* ฟ้าอ่อนสดใส */
  text-shadow: 0 2px 8px #000a, 0 0 2px #38bdf8;
  text-align: center;
  margin-bottom: 30px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* 1. title-container: เอาเงาออก และใน dark mode ใช้สีดำ */
.title-container h2 {
  color: #111;
  text-shadow: none !important;
}
html[data-theme="dark"] .title-container h2 {
  color: #fff;
  text-shadow: none;
}

/* Form Steps */
.form-step {
  display: none;
  animation: fadeIn 0.4s ease;
}

.form-step.active {
  display: block;
}

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

/* Form Group */
.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  color: #2563eb;
  font-weight: 400;
  font-size: 14px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 20px;
  border: 1px solid #cbd5e1;
  border-radius: var(--border-radius);
  font-size: 16px;
  outline: none;
  transition: all 0.3s;
  color: var(--text-color);
  background: #f8fafc;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px #2563eb22;
}

.form-group input:disabled,
.form-group select:disabled {
  color: #b0b8c1;
  background: #e5e7eb;
}

.form-group.required label::after {
  content: '*';
  color: var(--error-color);
  margin-left: 4px;
}

select:disabled {
  background-color: #f5f5f5;
  color: #aaa;
  cursor: not-allowed;
}

/* Buttons */
.form-buttons {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

button {
  width: 100%;
  padding: 14px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

button:hover {
  background: linear-gradient(90deg, #1d4ed8, #7c3aed);
}

button:active {
  transform: translateY(0);
}

.prev-btn {
  background: #64748b;
  color: #fff;
}

.submit-btn {
  background: linear-gradient(90deg, #2563eb, #a21caf);
  color: #fff;
}

/* Booking Summary */
.booking-summary {
  background-color: #f1f5f9;
  border-radius: var(--border-radius);
  padding: 20px;
  margin-top: 10px;
}

.summary-item {
  display: flex;
  margin-bottom: 12px;
  align-items: center;
}

.summary-label {
  font-weight: 500;
  min-width: 120px;
  color: #2563eb;
}

.summary-value {
  flex: 1;
  color: #222c36; /* สีดำเข้มสำหรับ summary value */
}

/* Flatpickr Holiday Highlight */
.flatpickr-day.holiday {
  background-color: #ffeaea !important;
  color: #ef4444 !important;
  font-weight: bold;
}

/* Responsive */
@media (max-width: 576px) {
  .form-container {
    padding: 20px;
  }

  .form-buttons {
    flex-direction: column;
  }

  .summary-label {
    min-width: 90px;
    font-size: 14px;
  }

  .summary-value {
    font-size: 14px;
  }
}

.form-progress {
  margin-bottom: 30px;
  position: relative;
}

.progress-bar {
  height: 8px;
  background-color: #e0e0e0;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s ease;
  width: 0%;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
}

.step {
  position: relative;
  text-align: center;
  flex: 1;
  font-size: 14px;
  color: #999;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step.active {
  color: var(--primary-color);
  font-weight: 500;
}

.step.completed {
  color: var(--success-color);
}

.step-marker {
  width: 20px;
  height: 20px;
  background-color: #e0e0e0;
  border-radius: 50%;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
}

.step.active .step-marker {
  background: #2196f3;
  color: #fff;
}

.step.completed .step-marker {
  background: #43a047;
  color: #fff;
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  background: #fff;
  color: #333;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 1.7rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.theme-toggle:hover {
  background: var(--primary-color);
  color: #fff;
}

html[data-theme="dark"] {
  background: var(--bg-dark);
  color: var(--text-dark);
}

html[data-theme="dark"] body {
  background: linear-gradient(135deg, #181c24 0%, #232a36 100%);
  color: var(--text-dark);
}

html[data-theme="dark"] .form-container {
  background-color: var(--container-dark);
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-dark);
}

html[data-theme="dark"] .form-group label {
  color: #38bdf8;
}

html[data-theme="dark"] .form-group input,
html[data-theme="dark"] .form-group select {
  background-color: var(--input-dark);
  border-color: var(--border-dark);
  color: var(--text-dark);
}

html[data-theme="dark"] .form-group input:disabled,
html[data-theme="dark"] .form-group select:disabled {
  color: #64748b;
  background: #232a36;
}

html[data-theme="dark"] .booking-summary {
  background-color: #232a36;
}

html[data-theme="dark"] .summary-label {
  color: #38bdf8;
}

html[data-theme="dark"] .summary-value {
  color: #222c36; /* สีดำเข้มสำหรับ summary value แม้ใน dark mode */
}

html[data-theme="dark"] button,
html[data-theme="dark"] .submit-btn {
  background: linear-gradient(90deg, #2563eb, #a21caf);
  color: #fff;
}

html[data-theme="dark"] .prev-btn {
  background: #334155;
  color: #e0e6f0;
}

html[data-theme="dark"] .prev-btn:hover {
  background: #232a36;
}

html[data-theme="dark"] .form-container::before {
  background: linear-gradient(90deg, #2563eb, #a21caf);
}

html[data-theme="dark"] .form-instructions {
  background: #232a36;
  border: 1px solid #38bdf8;
  color: #e0e6f0;
}

html[data-theme="dark"] .form-instructions strong {
  color: #38bdf8;
}

/* 2. form-instructions: สีของคำแนะนำให้ใช้สีดำเสมอ */
.form-instructions,
.form-instructions ul,
.form-instructions li,
.form-instructions strong {
  color: #111 !important;
}
html[data-theme="dark"] .form-instructions,
html[data-theme="dark"] .form-instructions ul,
html[data-theme="dark"] .form-instructions li,
html[data-theme="dark"] .form-instructions strong {
  color: #111 !important;
}

/* 3. เลือกบริการ (service-options) ให้ใช้สีเหมือน Step อื่นๆ ใน Dark mode */
html[data-theme="dark"] .service-options label {
  background: #232a36;
  border-color: #334155;
  color: #e0e6f0;
}
html[data-theme="dark"] .service-options label:hover {
  background: #334155;
  border-color: #2563eb;
}
html[data-theme="dark"] .service-options input[type="radio"]:checked + span,
html[data-theme="dark"] .service-options label:has(input[type="radio"]:checked) {
  background: #2563eb;
  border-color: #2563eb;
  color: #fff;
}

/* ให้ label ของ .service-options ใช้สีเดียวกับ .form-group label */
.service-options label {
  color: #111 !important; /* สีดำใน light mode */
}
html[data-theme="dark"] .service-options label {
  color: #fff !important; /* สีขาวใน dark mode */
}

/* กำหนดให้ label ที่มีข้อความ "เลือกบริการที่ต้องการ:" ใช้สีเดียวกับ .form-group label */
label:contains('เลือกบริการที่ต้องการ:') {
  color: #2563eb !important;
}
html[data-theme="dark"] label:contains('เลือกบริการที่ต้องการ:') {
  color: #38bdf8 !important;
}

html[data-theme="dark"] .step-marker {
  background-color: #334155;
  color: #e0e6f0;
}

html[data-theme="dark"] .step.active .step-marker {
  background-color: #2563eb;
  color: #fff;
}

html[data-theme="dark"] .step.completed .step-marker {
  background-color: #22c55e;
  color: #fff;
}

html[data-theme="dark"] .progress-bar {
  background-color: #334155;
}

html[data-theme="dark"] .progress-fill {
  background: linear-gradient(90deg, #2563eb, #a21caf);
}

html[data-theme="dark"] label {
  /* กำหนดให้ label ทุกตัวใน dark mode เป็นสีฟ้า #38bdf8 */
  color: #38bdf8;
}