:root {
  --color-primary: #1e5fbf;
  --color-primary-dark: #164a94;
  --color-primary-light: #eaf1fb;
  --color-required: #e0453f;
  --color-text: #22303f;
  --color-text-light: #667485;
  --color-border: #d7dee7;
  --color-bg: #f2f5f9;
  --color-surface: #ffffff;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(30, 41, 59, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

/* Header */
.app-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: 20px 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.app-header__inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.app-header__icon {
  font-size: 34px;
  opacity: 0.95;
}

.app-header__title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.app-header__subtitle {
  margin: 2px 0 0;
  font-size: 0.85rem;
  opacity: 0.9;
}

/* Page */
.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.application-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Section */
.form-section {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  border: 1px solid var(--color-border);
}

.form-section__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  border-bottom: 2px solid var(--color-primary-light);
  padding-bottom: 12px;
}

.form-section__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* Grid */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label,
.form-field__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  line-height: 1.4;
}

.badge--required {
  background: rgba(224, 69, 63, 0.12);
  color: var(--color-required);
}

/* Inputs */
input[type="text"],
input[type="tel"],
input[type="date"],
input[type="number"],
select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' fill='none' stroke='%23667485' stroke-width='1.6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
}

input::placeholder {
  color: #a6b1bf;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 95, 191, 0.15);
}

input.field-error,
select.field-error {
  border-color: var(--color-required);
}

input.field-error:focus {
  box-shadow: 0 0 0 3px rgba(224, 69, 63, 0.15);
}

/* Radio */
.radio-group {
  display: flex;
  gap: 20px;
  padding: 8px 2px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--color-text);
}

.radio-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
  margin: 0;
}

/* Address row */
.address-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
}

.address-row__zip {
  min-width: 0;
}

/* Form message */
.form-message {
  min-height: 20px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0 12px;
}

.form-message.success {
  color: #1a8a4a;
}

.form-message.error {
  color: var(--color-required);
}

/* Submit button */
.form-actions {
  position: sticky;
  bottom: 12px;
  z-index: 5;
}

.submit-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(30, 95, 191, 0.35);
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.12s;
  font-family: inherit;
}

.submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(30, 95, 191, 0.4);
}

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

.submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 20px 16px 30px;
  color: var(--color-text-light);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }

  .address-row {
    grid-template-columns: 1fr;
  }

  .app-header__title {
    font-size: 1.1rem;
  }

  .app-header__icon {
    font-size: 28px;
  }

  .form-section {
    padding: 16px;
  }

  .page {
    padding: 16px 12px 50px;
  }
}

@media (min-width: 641px) and (max-width: 900px) {
  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}