/* =========================================================
   DESIGN TOKENS
========================================================= */
:root {
  --primary-color: #005bac;
  --primary-light: #e6f0f9;
  --primary-dark: #004582;
  --accent-color: #ff9800;
  --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --text-dark: #2c3e50;
  --text-muted: #5d6d7e;
  --error-color: #e74c3c;
  --success-color: #27ae60;
  --card-bg: rgba(255, 255, 255, 0.95);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* =========================================================
   RESET & BASE
========================================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--bg-gradient);
  background-attachment: fixed;
  min-height: 100vh;
  padding: 40px 20px;
}

/* =========================
   Header
========================= */
.page-header {
  background: transparent;
  padding: 0 0 40px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
}

.page-header-icon {
  width: 50px;
  height: auto;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

/* =========================
   Layout
========================= */
.container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card-bg);
  padding: 50px;
  border-radius: var(--border-radius);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

.form-lead {
  margin-bottom: 40px;
  font-size: 1.1rem;
  color: var(--text-muted);
  text-align: center;
  border-bottom: 2px solid var(--primary-light);
  padding-bottom: 20px;
}

/* =========================
   Form Elements
========================= */
.form-group {
  margin-bottom: 40px;
}

.form-label {
  font-weight: 700;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.required {
  background: var(--error-color);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
  vertical-align: middle;
  text-transform: uppercase;
}

.form-block {
  background: #fff;
  border: 1px solid #edf2f7;
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.form-block:hover {
  border-color: var(--primary-light);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.form-block h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.req {
  color: var(--error-color);
  font-size: 0.8rem;
  margin-left: 4px;
}

input[type="text"],
input[type="tel"],
input[type="email"] {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #edf2f7;
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--transition);
  background: #f8fafc;
}

input[type="text"]:focus,
input[type="tel"]:focus,
input[type="email"]:focus {
  outline: none;
  border-color: var(--primary-color);
  background: #fff;
  box-shadow: 0 0 0 4px var(--primary-light);
}

::placeholder {
  color: #cbd5e0;
}

.err-msg {
  color: var(--error-color);
  font-size: 0.85rem;
  margin-top: 8px;
  font-weight: 500;
}

/* =========================
   Checkboxes & Radios
========================= */
.checkbox-item,
.radio-item {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  font-size: 1rem;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 6px;
  transition: var(--transition);
}

.checkbox-item:hover,
.radio-item:hover {
  background: var(--primary-light);
}

.checkbox-item input,
.radio-item input {
  width: 18px;
  height: 18px;
  margin-right: 12px;
  accent-color: var(--primary-color);
}

.form-subtitle {
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-left: 4px solid var(--primary-color);
  padding-left: 10px;
}

/* Nested Items */
.news-plan,
.kc-users {
  margin: 15px 0 20px 30px;
  padding: 20px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px dashed #cbd5e0;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* =========================
   Messages
========================= */
.kc-bonus {
  margin: 15px 0 20px 30px;
  padding: 15px 20px;
  background: linear-gradient(135deg, #fff9c4, #fff176);
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  color: #5d4037;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  animation: bounceIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounceIn {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }

  70% {
    transform: scale(1.05);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.kc-discount-msg {
  margin-top: 15px;
  padding: 15px;
  background: #fff5f5;
  border-left: 4px solid var(--error-color);
  border-radius: 4px;
  font-size: 0.9rem;
  color: #c53030;
}

/* =========================
   Button
========================= */
.btn-area {
  text-align: center;
  margin-top: 50px;
}

.submit-btn {
  background: var(--primary-color);
  color: #fff;
  border: none;
  padding: 18px 60px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 10px 20px rgba(0, 91, 172, 0.2);
}

.submit-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0, 91, 172, 0.3);
}

.submit-btn:active {
  transform: translateY(0);
}

/* =========================
   Utility
========================= */
.hidden {
  display: none !important;
}

/* Responsive Adjustments */
@media (max-width: 600px) {
  .container {
    padding: 30px 20px;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }
}