@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
  /* Colors - Monochromatic Shadcn / Notion Blueprint */
  --color-canvas: #f5f5f5;
  --color-paper: #ffffff;
  --color-surface-alt: #fafafa;
  --color-ink: #0a0a0a;
  --color-ink-soft: #171717;
  --color-mid-gray: #737373;
  --color-hairline: #e5e5e5;
  --color-ember: #e7000b;

  /* Typography */
  --font-geist: 'Geist', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Radii */
  --radius-card: 24px;
  --radius-pill: 18px;
  --radius-nested: 10px;
  --radius-sm: 6px;

  /* Elevation - Pure Flat Notion Aesthetic (No shadows) */
  --shadow-subtle: none;
  --shadow-card-hover: none;
  --shadow-phone: none;
}

/* Enforce pure flat cards without floating shadows */
.card, .editorial-visual, .signoff-container, .legal-wrapper, .clean-summary-result, .phone-container {
  box-shadow: none !important;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-canvas);
  color: var(--color-ink);
}

body {
  font-family: var(--font-geist);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-canvas);
  color: var(--color-ink);
  overflow-x: hidden;
}

/* Container */
.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 245, 245, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-hairline);
  transition: all 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-nested);
  object-fit: contain;
  background: var(--color-paper);
}

.brand-name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.4px;
  color: var(--color-ink);
}

.brand-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  color: var(--color-mid-gray);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-item a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-mid-gray);
  transition: color 0.15s ease;
}

.nav-item a:hover {
  color: var(--color-ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language Switcher Pill (Top Right) */
.lang-switch-pill {
  display: inline-flex;
  align-items: center;
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: 99px;
  padding: 4px;
  gap: 3px;
  height: 38px;
  box-sizing: border-box;
}

.lang-btn {
  background: transparent;
  border: none;
  font-family: var(--font-geist);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-mid-gray);
  cursor: pointer;
  padding: 0 12px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 99px;
  transition: all 0.15s ease;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--color-ink);
}

.lang-btn.active {
  background: var(--color-ink);
  color: var(--color-paper);
  font-weight: 600;
}

.lang-switch-pill span {
  color: var(--color-hairline);
  font-size: 12px;
  user-select: none;
  padding: 0 1px;
}

/* Mobile Nav Toggle */
.mobile-nav-btn {
  display: none;
  background: none;
  border: 1px solid var(--color-hairline);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-ink);
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-geist);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  border: 1px solid var(--color-ink);
  padding: 10px 18px;
  height: 38px;
}

.btn-primary:hover {
  background: var(--color-ink-soft);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: var(--color-paper);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  padding: 10px 18px;
  height: 38px;
}

.btn-secondary:hover {
  background: var(--color-surface-alt);
  border-color: #d4d4d4;
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid transparent;
  padding: 8px 14px;
  height: 36px;
}

.btn-ghost:hover {
  background: rgba(0, 0, 0, 0.04);
}

.btn-sm {
  font-size: 13px;
  padding: 6px 12px;
  height: 32px;
}

/* Card System */
.card {
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
  padding: 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: #dcdcdc;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.4px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 14px;
  color: var(--color-mid-gray);
  line-height: 1.5;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  line-height: 1.2;
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--color-hairline);
  color: var(--color-ink);
}

.badge-solid {
  background: var(--color-ink);
  color: var(--color-paper);
  border: 1px solid var(--color-ink);
}

.badge-soft {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  color: var(--color-ink-soft);
}

.badge-ember {
  background: #fff1f1;
  border: 1px solid #fecaca;
  color: var(--color-ember);
}

/* Section Common */
.section {
  padding: 72px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.8px;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-mid-gray);
  line-height: 1.5;
}

/* Hero Section */
.hero-section {
  padding: 64px 0 48px;
  text-align: center;
}

.hero-tag-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -1.8px;
  line-height: 1.15;
  color: var(--color-ink);
  max-width: 820px;
  margin: 0 auto 18px;
}

.hero-subtitle {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-mid-gray);
  max-width: 620px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-cta-btn {
  padding: 12px 22px;
  height: 44px;
  font-size: 14px;
}

/* Hero Phone Preview (Single Screen) */
.hero-preview {
  max-width: 380px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: center;
}

.hero-phone-screen {
  width: 100%;
  max-width: 380px;
  height: auto;
  display: block;
}

/* Editorial Showcase Rows (Notion Asymmetrical Layout) */
.editorial-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 56px;
  padding: 64px 0;
  border-bottom: 1px solid var(--color-hairline);
}

.editorial-row:last-child {
  border-bottom: none;
}

.editorial-row.reverse .editorial-text {
  order: 2;
}

.editorial-row.reverse .editorial-visual {
  order: 1;
}

.editorial-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.editorial-tag {
  align-self: flex-start;
}

.editorial-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.7px;
  line-height: 1.25;
  color: var(--color-ink);
}

.editorial-desc {
  font-size: 15px;
  color: var(--color-mid-gray);
  line-height: 1.6;
}

.editorial-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.editorial-point-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #262626;
  line-height: 1.5;
}

.point-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-ink);
  margin-top: 2px;
}

/* Notion Callout Box */
.notion-callout {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-nested);
  padding: 14px 16px;
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.5;
  margin-top: 8px;
}

.notion-callout-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-ink);
  margin-top: 1px;
}

/* Visual Container */
.editorial-visual {
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

/* Visual 1: Raw vs Clean Summary */
.comparison-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.comparison-card {
  border-radius: 14px;
  padding: 14px;
  font-size: 13px;
}

.raw-link-preview {
  background: #fafafa;
  border: 1px dashed var(--color-hairline);
  color: var(--color-mid-gray);
}

.raw-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 500;
  color: #8c8c8c;
  margin-bottom: 8px;
}

.raw-url-text {
  font-family: monospace;
  font-size: 11px;
  background: #f0f0f0;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.raw-excerpt {
  font-size: 12px;
  color: #a3a3a3;
  line-height: 1.4;
  margin-top: 6px;
}

.arrow-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-mid-gray);
  font-size: 11px;
  font-weight: 500;
}

.clean-summary-result {
  background: #ffffff;
  border: 1px solid var(--color-hairline);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.summary-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.35;
  margin-bottom: 6px;
}

.summary-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.summary-bullet {
  font-size: 12px;
  color: #404040;
  line-height: 1.4;
  display: flex;
  gap: 6px;
}

.summary-bullet::before {
  content: "•";
  color: var(--color-ink);
  font-weight: bold;
}

/* Visual 2: Authentic Folders & Smart Search Showcase */
.real-folders-showcase {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.app-search-mockup {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--color-hairline);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-mid-gray);
}

.app-protip-note {
  font-size: 11.5px;
  color: var(--color-mid-gray);
  line-height: 1.4;
}

.app-protip-note strong {
  color: var(--color-ink);
}

.real-folders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.real-folder-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--color-hairline);
  border-radius: 12px;
  padding: 14px 12px 12px;
  display: flex;
  flex-direction: column;
  min-height: 86px;
  transition: border-color 0.15s ease;
}

.real-folder-card:hover {
  border-color: #c4c4c4;
}

.folder-tab-notch {
  position: absolute;
  top: -6px;
  left: 12px;
  width: 44px;
  height: 7px;
  background: #ffffff;
  border-top: 1px solid var(--color-hairline);
  border-left: 1px solid var(--color-hairline);
  border-right: 1px solid var(--color-hairline);
  border-radius: 4px 4px 0 0;
}

.real-folder-header {
  color: var(--color-ink);
  margin-bottom: 6px;
}

.real-folder-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.2;
}

.real-folder-count {
  font-size: 11px;
  color: var(--color-mid-gray);
  margin-top: 2px;
}

/* Visual 3: Authentic Subscription Plans & Quota Integrity */
.real-plans-showcase {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plans-section-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-mid-gray);
  letter-spacing: 0.6px;
}

.plans-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.plan-item-card {
  background: #ffffff;
  border: 1px solid var(--color-hairline);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s ease;
}

.plan-item-card:hover {
  border-color: #c4c4c4;
}

.plan-item-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.plan-item-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-ink);
}

.plan-item-price {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-mid-gray);
  margin-top: 1px;
}

.plan-item-desc {
  font-size: 11.5px;
  color: #525252;
  line-height: 1.4;
}

.plan-guarantee-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 11.5px;
  color: #525252;
  line-height: 1.45;
  padding-top: 8px;
  border-top: 1px solid var(--color-hairline);
}

.plan-guarantee-note svg {
  color: var(--color-ink);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Accordion FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
  overflow: hidden;
}

.faq-item.open {
  border-radius: 20px;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-geist);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--color-mid-gray);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--color-mid-gray);
  line-height: 1.6;
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Editorial Sign-off (Replaces floating empty CTA box) */
.editorial-signoff {
  padding: 64px 0 48px;
}

.signoff-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-card);
  padding: 36px 44px;
  box-shadow: var(--shadow-subtle);
}

.signoff-mascot {
  width: 100px;
  height: 100px;
  object-fit: contain;
  flex-shrink: 0;
}

.signoff-content {
  flex: 1;
}

.signoff-title {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.6px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.signoff-desc {
  font-size: 14px;
  color: var(--color-mid-gray);
  line-height: 1.6;
  max-width: 540px;
  margin-bottom: 18px;
}

.signoff-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-hairline);
  padding: 48px 0 32px;
  background: var(--color-canvas);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 320px;
}

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 13px;
  color: var(--color-mid-gray);
  line-height: 1.5;
}

.footer-links-group {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.2px;
}

.footer-col a {
  text-decoration: none;
  font-size: 13px;
  color: var(--color-mid-gray);
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--color-ink);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-hairline);
  font-size: 12px;
  color: var(--color-mid-gray);
  flex-wrap: wrap;
  gap: 12px;
}

/* Legal Documents Layout (privacy.html & terms.html) */
.legal-wrapper {
  max-width: 800px;
  margin: 40px auto 80px;
  background: var(--color-paper);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-card);
  padding: 40px;
  box-shadow: var(--shadow-subtle);
}

.legal-header {
  border-bottom: 1px solid var(--color-hairline);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.legal-lang-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.legal-tab-btn {
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  font-family: var(--font-geist);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  color: var(--color-mid-gray);
  transition: all 0.15s ease;
}

.legal-tab-btn.active {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}

.legal-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.8px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.legal-meta {
  font-size: 13px;
  color: var(--color-mid-gray);
}

.legal-content {
  font-size: 14px;
  line-height: 1.7;
  color: #262626;
}

.legal-content h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.4px;
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-top: 20px;
  margin-bottom: 8px;
}

.legal-content p {
  margin-bottom: 14px;
}

.legal-content ul, .legal-content ol {
  margin-bottom: 16px;
  padding-left: 20px;
}

.legal-content li {
  margin-bottom: 6px;
}

.legal-alert {
  background: var(--color-surface-alt);
  border-left: 3px solid var(--color-ink);
  padding: 14px 18px;
  border-radius: 4px;
  margin: 20px 0;
  font-size: 13px;
  color: var(--color-ink-soft);
}

/* Modal / Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  display: none;
  align-items: center;
  gap: 10px;
  z-index: 100;
  animation: slideUp 0.25s ease forwards;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  .header-nav.mobile-active {
    display: block;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-hairline);
    padding: 20px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  }
  .header-nav.mobile-active .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .mobile-nav-btn {
    display: flex;
  }
  .hero-title {
    font-size: 32px;
    letter-spacing: -1px;
  }
  .editorial-row {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0;
  }
  .editorial-row.reverse .editorial-text {
    order: 1;
  }
  .editorial-row.reverse .editorial-visual {
    order: 2;
  }
  .signoff-container {
    flex-direction: column;
    text-align: center;
    padding: 32px 20px;
  }
  .signoff-actions {
    justify-content: center;
  }
  .footer-top {
    flex-direction: column;
  }
  .legal-wrapper {
    padding: 20px;
    margin: 20px 10px;
  }
}