/* ============================================
   Scale Works 社労士版 - スタイル
   ============================================ */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #1a2b5f;
  --primary-light: #2d4a8c;
  --primary-lighter: #e8edf7;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --danger: #ef4444;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 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);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
  min-height: 100vh;
}

/* --- Header --- */
.header {
  background: var(--primary);
  color: #fff;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 18px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.header-label {
  font-size: 13px;
  opacity: 0.8;
}

/* --- Progress --- */
.progress-container {
  background: #fff;
  padding: 16px 24px;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 60px;
  z-index: 99;
}

.progress-bar {
  max-width: 800px;
  margin: 0 auto 12px;
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  width: 25%;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-steps {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--gray-400);
}

.progress-step {
  text-align: center;
  flex: 1;
  transition: color var(--transition);
}

.progress-step.active {
  color: var(--accent);
  font-weight: 600;
}

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

/* --- Main --- */
.main {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

/* --- Steps --- */
.step {
  animation: fadeSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.step.hidden {
  display: none;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.step-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 15px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

/* --- Slider --- */
.slider-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.form-slider {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--gray-200);
  border-radius: 3px;
  outline: none;
}

.form-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.form-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.slider-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  min-width: 120px;
  text-align: right;
}

.slider-range {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 4px;
}

/* --- Task List --- */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  animation: fadeSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.task-item:hover {
  border-color: var(--gray-300);
}

.task-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--accent);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--accent);
}

.task-check svg {
  width: 12px;
  height: 12px;
  color: #fff;
}

.task-item.disabled .task-check {
  background: var(--gray-300);
  border-color: var(--gray-300);
}

.task-name {
  flex: 1;
  font-size: 14px;
  color: var(--gray-800);
}

.task-item.disabled .task-name {
  color: var(--gray-400);
  text-decoration: line-through;
}

.task-hours-input {
  width: 60px;
  padding: 6px 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: inherit;
  color: var(--primary);
  transition: border-color var(--transition);
}

.task-hours-input:focus {
  outline: none;
  border-color: var(--accent);
}

.task-unit {
  font-size: 13px;
  color: var(--gray-500);
  white-space: nowrap;
}

.task-remove {
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  color: var(--gray-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all var(--transition);
  font-size: 18px;
  font-family: inherit;
}

.task-remove:hover {
  background: var(--gray-100);
  color: var(--danger);
}

.btn-add-task {
  width: 100%;
  padding: 12px;
  background: none;
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  margin-bottom: 16px;
}

.btn-add-task:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--primary-lighter);
}

.task-summary {
  background: var(--primary-lighter);
  padding: 16px 24px;
  border-radius: var(--radius);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: 15px;
}

.summary-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

/* --- Buttons --- */
.nav-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 32px;
  gap: 16px;
}

.btn {
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-back {
  background: var(--gray-100);
  color: var(--gray-600);
}

.btn-back:hover {
  background: var(--gray-200);
}

.btn-next {
  background: var(--accent);
  color: #fff;
  margin-left: auto;
}

.btn-next:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-next:disabled {
  background: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
}

.btn-skip {
  background: none;
  border: 2px solid var(--gray-300);
  color: var(--gray-500);
  font-size: 14px;
  padding: 10px 24px;
  width: 100%;
  margin-top: -8px;
}

.btn-skip:hover {
  border-color: var(--gray-400);
  color: var(--gray-600);
  background: var(--gray-50);
}

/* --- ROI Summary --- */
.preview-section {
  margin-bottom: 32px;
}

.roi-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.roi-saving {
  grid-column: 1 / -1;
  background: var(--success-light);
  border: 1px solid var(--success);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.roi-saving-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.roi-saving-label {
  font-size: 14px;
  color: var(--gray-700);
  font-weight: 600;
}

.roi-saving-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--success);
}

.roi-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.roi-label {
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.roi-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
}

.roi-unit {
  font-size: 14px;
  font-weight: 400;
}

/* --- Breakdown --- */
.breakdown-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 12px;
}

.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.breakdown-item {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  animation: fadeSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  animation-fill-mode: both;
}

.breakdown-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 6px;
}

.breakdown-detail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 8px;
}

.breakdown-current {
  color: var(--gray-500);
}

.breakdown-arrow {
  color: var(--gray-400);
}

.breakdown-saved {
  color: var(--success);
  font-weight: 600;
}

.breakdown-cost {
  color: var(--success);
  font-size: 12px;
}

.breakdown-bar-bg {
  height: 6px;
  background: var(--gray-100);
  border-radius: 3px;
  overflow: hidden;
}

.breakdown-bar-fill {
  height: 100%;
  background: var(--success);
  border-radius: 3px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  margin-top: 40px;
  padding: 32px 24px;
  background: var(--primary-lighter);
  border-radius: var(--radius-lg);
}

.cta-text {
  font-size: 15px;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.cta-sub {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 20px;
}

.btn-cta {
  display: inline-block;
  padding: 16px 48px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
}

.btn-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* --- Course LP Section --- */
.course-section {
  margin-top: 32px;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 1px solid var(--warning);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.course-inner {
  padding: 32px 24px;
  text-align: center;
}

.course-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.course-desc {
  font-size: 14px;
  color: var(--gray-700);
  margin-bottom: 20px;
  line-height: 1.7;
}

.btn-course {
  display: inline-block;
  padding: 14px 40px;
  background: var(--warning);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  text-decoration: none;
}

.btn-course:hover {
  background: #d97706;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* --- Footer --- */
.cta-footer {
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid var(--gray-200);
  margin-top: 24px;
}

.cta-footer p {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.cta-brand {
  font-size: 13px;
  color: var(--gray-400);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .step-title {
    font-size: 20px;
  }

  .slider-group {
    flex-direction: column;
    align-items: stretch;
  }

  .slider-value {
    text-align: center;
    min-width: unset;
  }

  .roi-summary {
    grid-template-columns: 1fr;
  }

  .roi-value {
    font-size: 24px;
  }

  .roi-saving-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .roi-saving-value {
    font-size: 18px;
  }

  .breakdown-detail {
    flex-wrap: wrap;
  }

  .header-label {
    display: none;
  }

  .btn-cta {
    padding: 14px 24px;
    font-size: 15px;
  }

  .course-title {
    font-size: 16px;
  }
}