:root {
  --primary-color: #0f172a;
  --primary-hover: #1e293b;
  --accent-color: #2563eb;
  --accent-light: #38bdf8;
  --bg-color: #f1f5f9;
  --surface-color: #ffffff;
  --border-color: #cbd5e1;
  --border-focus: #94a3b8;
  --text-main: #0f172a;
  --text-sub: #475569;
  --text-muted: #64748b;
  --warning-bg: #fffbeb;
  --warning-border: #f59e0b;
  --warning-text: #b45309;
  --success-color: #15803d;
  --info-bg: #f8fafc;
  --info-border: #94a3b8;
  --error-red: #dc2626;
  --error-bg: #fef2f2;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

#cursor-glow {
  position: fixed;
  width: 250px;
  height: 250px;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.25) 0%,
    rgba(37, 99, 235, 0) 70%
  );
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 9999;
  display: none;
}

.hero {
  background: radial-gradient(circle at 50% 0%, #1e293b 0%, #0f172a 100%);
  position: relative;
  overflow: hidden;
  color: white;
  padding: 5rem 2rem 4rem;
  text-align: center;
  border-bottom: 4px solid var(--accent-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero-container {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  z-index: 1;
}
.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: #ffffff;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.hero-title span {
  color: var(--accent-light);
}
.hero-subtitle {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 0.75rem;
  color: #f8fafc;
  letter-spacing: 0.05em;
}
.hero-desc {
  font-size: 1.05rem;
  color: #94a3b8;
  max-width: 700px;
  margin: 0 auto;
}
.admax-wrapper-top {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}
.admax-wrapper-bottom {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    margin-bottom: 30px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 2;
}

.scroll-prompt-wrapper {
  text-align: center;
  margin-top: 0rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 10;
}
.scroll-btn {
  background-color: #0f172a;
  color: #f8fafc;
  padding: 0.6rem 1.75rem;
  border: 1px solid #334155;
  border-left: 4px solid var(--accent-light);
  border-radius: 0;
  font-size: 0.95rem;
  font-weight: bold;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
}
.scroll-btn:hover {
  background-color: #1e293b;
  border-color: var(--accent-light);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}
.scroll-arrow {
  color: var(--accent-light);
  font-size: 1rem;
  animation: techSlide 1.5s ease-in-out infinite;
}
@keyframes techSlide {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.7;
  }
  50% {
    transform: translateY(4px);
    opacity: 1;
  }
}

.benefit-section {
  background-color: #0f172a;
  background-image: radial-gradient(
      circle at 100% 0%,
      rgba(37, 99, 235, 0.15) 0%,
      transparent 40%
    ),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 20px 20px, 20px 20px;
  border: 1px solid #1e293b;
  border-radius: 8px;
  padding: 3.5rem 2.5rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
  position: relative;
}

.benefit-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: #f8fafc;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-left: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  letter-spacing: 0.05em;
}
.benefit-title::before {
  content: "WHY FAST PROTOTYPING";
  font-size: 0.75rem;
  color: var(--accent-light);
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
}
.benefit-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 2px;
  background: var(--accent-light);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.benefit-lead {
  font-size: 0.95rem;
  color: #94a3b8;
  margin-bottom: 3rem;
  line-height: 1.7;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.benefit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
}
.benefit-card {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: 2rem 2.5rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
  border: 1px solid #334155;
  text-align: left;
  transition: transform 0.3s, border-color 0.3s;
  display: flex;
  align-items: center;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}
.benefit-card::after {
  content: "BENEFIT";
  position: absolute;
  right: 10px;
  bottom: -15px;
  font-size: 5.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.03);
  pointer-events: none;
  letter-spacing: 0.05em;
}
.benefit-card:hover {
  transform: translateX(8px);
  border-color: var(--accent-light);
}
.benefit-icon {
  font-size: 3rem;
  color: var(--accent-light);
  margin-bottom: 0;
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.benefit-content {
  flex-grow: 1;
  position: relative;
  z-index: 1;
}
.benefit-card h4 {
  font-weight: bold;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: #f8fafc;
  line-height: 1.5;
}
.benefit-card p {
  font-size: 0.95rem;
  color: #94a3b8;
  margin-bottom: 0;
  line-height: 1.6;
  margin-top: 0;
}
@media (max-width: 900px) {
  .benefit-card {
    flex-direction: column;
    text-align: center;
    padding: 2rem 1.5rem;
    gap: 1rem;
  }
  .benefit-card:hover {
    transform: translateY(-5px);
  }
}

.workspace-section {
  margin-top: 4rem;
  padding-top: 4rem;
  border-top: 1px dashed var(--border-color);
}
.workspace-header {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
}
.workspace-subtitle {
  font-size: 0.85rem;
  color: var(--accent-color);
  font-weight: 800;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}
.workspace-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}
.workspace-lead {
  font-size: 1rem;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 750px;
  margin: 0 auto;
}
.workspace-header::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
  margin: 1.5rem auto 0;
  border-radius: 2px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}
.card {
  position: relative;
  background-color: var(--border-color);
  border-radius: 12px;
  padding: 2px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.card-content {
  background-color: var(--surface-color);
  border-radius: 10px;
  padding: 2.5rem 1.75rem;
  height: 100%;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: background-color 0.3s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(
    from 0deg,
    transparent 0%,
    transparent 80%,
    var(--accent-light) 100%,
    var(--accent-color) 100%
  );
  transform-origin: center;
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 0;
}
.card:hover:not(.disabled) {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.25);
}
.card:hover:not(.disabled)::before {
  opacity: 1;
  animation: rotate-border 2.5s linear infinite;
}
@keyframes rotate-border {
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.card-icon-wrap {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  background: #eff6ff;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
}
.card:hover:not(.disabled) .card-icon-wrap {
  background: var(--accent-color);
  color: white;
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
}
.card h3 {
  margin-bottom: 1rem;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-main);
}
.card p {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.6;
  text-align: left;
}

.card.disabled {
  background-color: var(--border-color);
  cursor: not-allowed;
}
.card.disabled .card-content {
  background-color: #f8fafc;
  opacity: 0.8;
}
.card.disabled .card-icon-wrap {
  color: var(--text-muted);
  background: #e2e8f0;
}
.card.disabled .badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background-color: var(--text-muted);
  color: white;
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-weight: bold;
  letter-spacing: 0.05em;
  z-index: 3;
}

#edit-view {
  display: none;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
}
button {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  background-color: var(--accent-color);
  color: white;
  cursor: pointer;
  font-size: 1rem;
  font-weight: bold;
  transition: background-color 0.2s, transform 0.1s;
}
button:hover {
  background-color: var(--primary-hover);
}
button:active {
  transform: scale(0.98);
}
button.secondary {
  background-color: var(--surface-color);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
button.secondary:hover {
  background-color: #f8fafc;
  border-color: var(--text-muted);
}
button.small {
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}
button.outline {
  background-color: transparent;
  border: 1px dashed var(--border-color);
  color: var(--text-sub);
  width: 100%;
  margin-top: 0.5rem;
}
button.outline:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background-color: #eff6ff;
}

button.btn-del-text {
  background: none;
  border: none;
  color: #dc2626;
  font-size: 0.8rem;
  font-weight: bold;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: color 0.2s, background-color 0.2s;
  border-radius: 4px;
}
button.btn-del-text:hover {
  background-color: #fef2f2;
  color: #991b1b;
}

.hint-accordion {
  margin-bottom: 2.5rem;
  border: 1px solid var(--accent-color);
  border-radius: 8px;
  background-color: #eff6ff;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}
.hint-header {
  padding: 1.25rem 1.75rem;
  cursor: pointer;
  font-weight: 800;
  color: var(--accent-color);
  background-color: #e0f2fe;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  border-bottom: 1px solid transparent;
}
.hint-header.active {
  border-bottom-color: var(--border-color);
}
.hint-header:hover {
  background-color: #bae6fd;
}
.hint-content {
  padding: 2rem;
  display: none;
  background-color: var(--surface-color);
}
.hint-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.hint-card {
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}
.hint-card h4 {
  margin-top: 0;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  font-size: 1.05rem;
  font-weight: bold;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}
.hint-card p {
  font-size: 0.95rem;
  color: var(--text-sub);
}

.structure-boxes-container {
  display: flex;
  flex-wrap: nowrap;
  gap: 1rem;
  margin-top: 1rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  align-items: stretch;
}
.structure-boxes-container::-webkit-scrollbar {
  height: 8px;
}
.structure-boxes-container::-webkit-scrollbar-track {
  background: #f8fafc;
  border-radius: 4px;
}
.structure-boxes-container::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
.structure-boxes-container::-webkit-scrollbar-thumb:hover {
  background: var(--border-focus);
}
.structure-box {
  flex: 0 0 260px;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  font-size: 0.85rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}
.structure-box-title {
  font-weight: bold;
  color: var(--accent-color);
  margin-bottom: 0.3rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.25rem;
  font-size: 0.9rem;
}
.structure-box-desc {
  color: var(--text-sub);
  line-height: 1.4;
}
.structure-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  font-size: 1.2rem;
  flex-shrink: 0;
  opacity: 0.5;
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.panel {
  background-color: transparent;
  height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 0.5rem;
}
.panel::-webkit-scrollbar {
  width: 8px;
}
.panel::-webkit-scrollbar-track {
  background: var(--bg-color);
  border-radius: 4px;
}
.panel::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
.panel::-webkit-scrollbar-thumb:hover {
  background: var(--border-focus);
}

.panel-title {
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-color);
  border-bottom: 4px solid var(--primary-color);
  padding-bottom: 0.75rem;
}

.section-block {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}
.section-header {
  background-color: #f8fafc;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}
.section-header h3 {
  font-size: 1.15rem;
  margin: 0;
  font-weight: 800;
  color: var(--primary-color);
}
.section-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}
.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: flex;
  align-items: center;
  font-weight: 800;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
  color: var(--text-main);
}
.form-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent-color);
  margin-right: 0.5rem;
  border-radius: 50%;
}

.help-text {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  line-height: 1.4;
  padding-left: 0.9rem;
  border-left: 2px solid var(--border-color);
}

input[type="text"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.95rem;
  background-color: #f8fafc;
  color: var(--text-main);
  transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
}
input[type="text"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
textarea {
  resize: vertical;
  min-height: 100px;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  background: #f8fafc;
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}
.radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: bold;
  color: var(--text-main);
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
  flex-wrap: wrap;
  font-weight: bold;
}

.warning-text {
  color: var(--warning-text);
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
  background-color: var(--warning-bg);
  padding: 1rem;
  border-radius: 6px;
  border-left: 4px solid var(--warning-border);
}

.slide-list {
  min-height: 100px;
  padding-bottom: 2rem;
}
.slide-item {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  position: relative;
}
.slide-item.sortable-ghost {
  opacity: 0.4;
  background-color: #e2e8f0;
  border: 2px dashed var(--border-focus);
}

.drag-handle {
  background-color: var(--primary-color);
  color: #ffffff;
  padding: 0.6rem 1rem;
  border-radius: 8px 8px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: grab;
  font-size: 0.85rem;
  font-weight: bold;
}
.drag-handle:active {
  cursor: grabbing;
  background-color: var(--primary-hover);
}

.slide-content-wrap {
  padding: 1.5rem;
}

.slide-header-top {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--bg-color);
}
.page-number-display {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 0.2rem 0.75rem;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.slide-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mode-selector-container {
  display: flex;
  gap: 1.5rem;
  background-color: #f8fafc;
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}
.mode-checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: bold;
  cursor: pointer;
  color: var(--primary-color);
  font-size: 0.95rem;
}

.global-constraints-container {
  background-color: var(--surface-color);
  padding: 1.5rem;
  border-radius: 8px;
  border: 2px solid var(--border-color);
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}
.modal-content {
  background-color: var(--surface-color);
  padding: 2.5rem;
  border-radius: 12px;
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
.modal-content h2 {
  margin-bottom: 1rem;
  font-weight: 900;
  color: var(--primary-color);
  font-size: 1.5rem;
}
.modal-content textarea {
  flex-grow: 1;
  min-height: 400px;
  font-family: monospace;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  white-space: pre-wrap;
  background-color: #0f172a;
  color: #f8fafc;
  border: none;
  padding: 1.5rem;
  border-radius: 8px;
  line-height: 1.5;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}