/* ==========================================================================
   NotionSnapshot Landing Page Stylesheet
   Modern High-End Dark SaaS Theme (Vanilla CSS)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-main: #0a0d14;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(26, 35, 54, 0.85);
  --bg-surface: #101522;
  --bg-input: rgba(14, 19, 31, 0.9);

  --border-light: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(79, 172, 254, 0.4);
  --border-active: #4facfe;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-purple: #7f56d9;
  --accent-emerald: #10b981;
  --accent-red: #ef4444;

  --gradient-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #7f56d9 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
  --gradient-glow: radial-gradient(circle, rgba(79, 172, 254, 0.15) 0%, rgba(0, 0, 0, 0) 70%);

  /* Typography */
  --font-base: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', sans-serif;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(79, 172, 254, 0.25);
  --shadow-glow-purple: 0 0 40px rgba(127, 86, 217, 0.3);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-base);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Typography Helpers */
.font-heading {
  font-family: var(--font-heading);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-center {
  text-align: center;
}

.font-bold {
  font-weight: 700;
}

/* Layout Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

/* Background Ambient Glows */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

.bg-glow-1 {
  top: -150px;
  left: 20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(79, 172, 254, 0.18) 0%, transparent 70%);
}

.bg-glow-2 {
  top: 40%;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(127, 86, 217, 0.12) 0%, transparent 70%);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 20, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-item {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-item:hover {
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #06090e;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  filter: brightness(1.1);
}

.glow-btn {
  position: relative;
}

.glow-btn::after {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--gradient-primary);
  border-radius: 9px;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
  filter: blur(12px);
}

.glow-btn:hover::after {
  opacity: 0.8;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue);
}

.btn-outline:hover {
  background: rgba(79, 172, 254, 0.1);
  transform: translateY(-2px);
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 90px 0 60px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  background: rgba(79, 172, 254, 0.1);
  border: 1px solid rgba(79, 172, 254, 0.3);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-description {
  max-width: 720px;
  margin: 0 auto 36px;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.hero-microcopy {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 50px;
}

/* ==========================================================================
   Interactive Hero Demo Card
   ========================================================================== */
.hero-demo-card {
  max-width: 960px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  box-shadow: var(--shadow-md), 0 0 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  text-align: left;
  transition: border-color var(--transition-normal);
}

.hero-demo-card:hover {
  border-color: rgba(79, 172, 254, 0.25);
}

.demo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(14, 18, 28, 0.9);
  border-bottom: 1px solid var(--border-light);
}

.window-controls {
  display: flex;
  gap: 6px;
}

.window-controls .control {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.control.red { background-color: #ff5f56; }
.control.yellow { background-color: #ffbd2e; }
.control.green { background-color: #27c93f; }

.demo-title-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
}

.notion-tag {
  background: rgba(255, 255, 255, 0.08);
  padding: 3px 10px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.sync-status {
  color: var(--accent-emerald);
  font-weight: 500;
}

.demo-badge {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(127, 86, 217, 0.2);
  color: #c4b5fd;
  border: 1px solid rgba(127, 86, 217, 0.4);
}

.demo-card-body {
  padding: 24px;
}

/* Demo Metric Cards Grid */
.demo-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 16px;
}

.metric-card.highlight {
  border-color: rgba(79, 172, 254, 0.3);
  background: rgba(79, 172, 254, 0.04);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 4px;
}

.metric-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* SVG Chart Area */
.chart-wrapper {
  background: rgba(10, 13, 20, 0.6);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.chart-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.chart-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chart-legend {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-line {
  display: inline-block;
  width: 16px;
  height: 3px;
  border-radius: 2px;
}

.legend-line.ideal {
  background: #64748b;
  border-top: 1px dashed #94a3b8;
}

.legend-line.actual {
  background: var(--accent-blue);
  box-shadow: 0 0 8px rgba(79, 172, 254, 0.8);
}

.svg-container {
  width: 100%;
  height: 240px;
}

/* Interactive Slider */
.demo-controls {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 16px 20px;
}

.control-label-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.control-title {
  font-weight: 500;
  color: var(--text-primary);
}

.control-day-badge {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.1);
  padding: 2px 10px;
  border-radius: 4px;
}

.custom-range {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #1e293b;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.custom-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
  cursor: grab;
  transition: transform var(--transition-fast);
}

.custom-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Headers & Shared Components
   ========================================================================== */
.section-tag {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ==========================================================================
   Problem Section
   ========================================================================== */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 32px 24px;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.problem-card:hover {
  transform: translateY(-4px);
  border-color: rgba(239, 68, 68, 0.3);
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.problem-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.problem-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 36px 30px;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 10px 30px -10px rgba(79, 172, 254, 0.15);
}

.feature-badge {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ==========================================================================
   Comparison Table
   ========================================================================== */
.table-responsive {
  margin-top: 50px;
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  background: var(--bg-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.95rem;
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
}

.comparison-table .highlight-col {
  background: rgba(79, 172, 254, 0.07);
  border-left: 1px solid rgba(79, 172, 254, 0.2);
  border-right: 1px solid rgba(79, 172, 254, 0.2);
  color: var(--text-primary);
}

.check-mark {
  color: var(--accent-emerald);
  font-weight: bold;
}

.cross-mark {
  color: var(--accent-red);
  font-weight: bold;
}

.triangle-mark {
  color: #f59e0b;
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 50px auto 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 40px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: rgba(127, 86, 217, 0.5);
  background: linear-gradient(180deg, rgba(127, 86, 217, 0.1) 0%, rgba(18, 24, 38, 0.9) 100%);
  box-shadow: var(--shadow-glow-purple);
}

.featured-ribbon {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent-purple);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
}

.plan-tag {
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}

.price-currency {
  font-size: 1.2rem;
  font-weight: 600;
}

.price-amount {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.price-period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
}

.plan-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-container {
  max-width: 780px;
}

.faq-list {
  margin-top: 40px;
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-base);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-toggle {
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--accent-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-answer p {
  padding-bottom: 20px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Waitlist Form Section
   ========================================================================== */
.form-container {
  max-width: 680px;
}

.form-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(79, 172, 254, 0.3);
  border-radius: 20px;
  padding: 48px 40px;
  box-shadow: var(--shadow-glow);
}

.form-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffbd2e;
  background: rgba(255, 189, 46, 0.1);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.form-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.form-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

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

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.required {
  color: var(--accent-red);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text-primary);
  font-family: var(--font-base);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.15);
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.radio-label input {
  accent-color: var(--accent-blue);
  width: 16px;
  height: 16px;
}

.form-privacy {
  margin-top: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Success Message */
.form-success {
  text-align: center;
  padding: 30px 10px;
}

.form-success.hidden {
  display: none;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.success-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.success-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-light);
  padding: 60px 0 30px;
  background: #07090e;
  position: relative;
  z-index: 1;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .demo-metrics-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .footer-container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .pc-only {
    display: none;
  }
}