/* ============================================
   RESET & BASE
   ============================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #0a0a0a;
  line-height: 1.6;
  background: #ffffff;
}

/* ============================================
   DESIGN TOKENS
   ============================================ */

/* Spacing Scale (8px base) */
:root {
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-15: 120px;
  --space-16: 128px;
  --space-20: 160px;
}

/* Typography Scale */
:root {
  --font-hero: 80px;
  --font-hero-mobile: 48px;
  --font-section-title: 48px;
  --font-section-title-mobile: 32px;
  --font-body: 20px;
  --font-body-mobile: 18px;
  --font-small: 14px;
  --font-nav-brand: 16px;
  --font-nav-link: 15px;
}

/* Color Palette */
:root {
  --color-text-primary: #0a0a0a;
  --color-text-secondary: #525252;
  --color-text-tertiary: #737373;
  --color-bg-white: #ffffff;
  --color-bg-light: #fafafa;
  --color-bg-lighter: #f5f5f5;
  --color-border: rgba(0, 0, 0, 0.08);
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--space-2);
}

@media (min-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  width: 100%;
}

.nav-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-3) var(--space-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (min-width: 768px) {
  .nav-container {
    padding: var(--space-3) var(--space-4);
  }
}

@media (min-width: 1024px) {
  .nav-container {
    padding: var(--space-3) var(--space-6);
  }
}

.nav-brand {
  font-size: var(--font-nav-brand);
  font-weight: 500;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: opacity 200ms ease;
}

.nav-brand:hover {
  opacity: 0.7;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}

.nav-link {
  font-size: var(--font-nav-link);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding: var(--space-10) 0 var(--space-8);
  text-align: center;
  background: var(--color-bg-light);
}

.hero-title {
  font-size: var(--font-hero-mobile);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-3);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  letter-spacing: -0.015em;
  line-height: 1.65;
  max-width: 640px;
  margin: 0 auto;
}

@media (min-width: 480px) {
  .hero {
    padding: var(--space-12) 0 var(--space-10);
  }
  
  .hero-title {
    font-size: 56px;
    margin-bottom: var(--space-4);
  }
  
  .hero-subtitle {
    font-size: 20px;
  }
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-12) 0 var(--space-10);
  }
  
  .hero-title {
    font-size: var(--font-hero);
    margin-bottom: var(--space-5);
  }
  
  .hero-subtitle {
    font-size: 24px;
  }
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.section {
  padding: var(--space-8) 0;
}

@media (min-width: 480px) {
  .section {
    padding: var(--space-10) 0;
  }
}

.section-title {
  font-size: var(--font-section-title-mobile);
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.section-text {
  font-size: var(--font-body-mobile);
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  letter-spacing: -0.01em;
  max-width: 680px;
}

.section-highlight {
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text-primary);
  text-align: center;
  margin-top: var(--space-8);
  padding: var(--space-5);
  background: var(--color-bg-light);
  border-radius: 12px;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-12) 0;
  }
  
  .section-title {
    font-size: var(--font-section-title);
    margin-bottom: var(--space-4);
  }
  
  .section-text {
    font-size: var(--font-body);
    margin-bottom: var(--space-6);
  }
  
  .section-highlight {
    font-size: 26px;
    padding: var(--space-6);
    margin-top: var(--space-10);
  }
}

/* ============================================
   FEATURE LISTS
   ============================================ */
.feature-list {
  list-style: none;
  margin: var(--space-8) 0;
  padding: var(--space-5);
  background: var(--color-bg-light);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.feature-item {
  font-size: var(--font-body-mobile);
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  letter-spacing: -0.01em;
  line-height: 1.65;
}

.feature-item:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-1);
}

@media (min-width: 768px) {
  .feature-list {
    padding: var(--space-5);
    margin: var(--space-10) 0;
  }
  
  .feature-item {
    font-size: var(--font-body);
    padding: var(--space-3) 0;
  }
  
  .feature-item:not(:last-child) {
    padding-bottom: var(--space-3);
  }
}

/* ============================================
   SECTION DIVIDERS
   ============================================ */
.section-divider {
  border: none;
  height: 1px;
  background: rgba(0, 0, 0, 0.06);
  margin: var(--space-8) 0;
  width: 100%;
}

@media (min-width: 768px) {
  .section-divider {
    margin: var(--space-10) 0;
  }
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
  padding: var(--space-10) 0 var(--space-12);
  text-align: center;
  background: var(--color-bg-light);
  border-radius: 16px;
  margin: var(--space-5) 0 var(--space-16) 0;
}

.cta-title {
  font-size: var(--font-section-title-mobile);
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.cta-text {
  font-size: var(--font-body-mobile);
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  letter-spacing: -0.01em;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.cta-highlight {
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .cta {
    padding: var(--space-12) 0 var(--space-16);
    margin: var(--space-8) 0 var(--space-20) 0;
  }
  
  .cta-title {
    font-size: var(--font-section-title);
    margin-bottom: var(--space-4);
  }
  
  .cta-text {
    font-size: var(--font-body);
    margin-bottom: var(--space-8);
  }
  
  .cta-highlight {
    font-size: 26px;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-light);
  padding: var(--space-6) 0;
  width: 100%;
  margin-top: var(--space-12);
}

@media (min-width: 768px) {
  .footer {
    margin-top: var(--space-16);
  }
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--font-small);
  color: var(--color-text-secondary);
}

@media (min-width: 480px) {
  .footer-container {
    padding: 0 var(--space-3);
  }
}

.footer-container a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

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

@media (min-width: 768px) {
  .footer {
    padding: var(--space-6) 0;
  }
  
  .footer-container {
    padding: 0 var(--space-4);
  }
}

/* ============================================
   TIPTAP EDITOR STYLES
   ============================================ */
.ProseMirror {
  outline: none;
  min-height: 200px;
}

.ProseMirror p {
  margin: 0.5em 0;
}

.ProseMirror p.is-editor-empty:first-child::before {
  color: #adb5bd;
  content: attr(data-placeholder);
  float: left;
  height: 0;
  pointer-events: none;
}

.ProseMirror h1,
.ProseMirror h2,
.ProseMirror h3,
.ProseMirror h4,
.ProseMirror h5,
.ProseMirror h6 {
  margin: 0.5em 0;
  font-weight: bold;
}

.ProseMirror h1 {
  font-size: 2em;
}

.ProseMirror h2 {
  font-size: 1.5em;
}

.ProseMirror ul,
.ProseMirror ol {
  padding-left: 1.5em;
  margin: 0.5em 0;
}

.ProseMirror blockquote {
  border-left: 3px solid #ddd;
  padding-left: 1em;
  margin: 0.5em 0;
  color: #666;
}

.ProseMirror code {
  background-color: #f4f4f4;
  padding: 2px 4px;
  border-radius: 3px;
  font-family: monospace;
}

.ProseMirror pre {
  background-color: #f4f4f4;
  padding: 1em;
  border-radius: 4px;
  overflow-x: auto;
}

.ProseMirror pre code {
  background-color: transparent;
  padding: 0;
}

.ProseMirror strong {
  font-weight: bold;
}

.ProseMirror em {
  font-style: italic;
}

.ProseMirror[style*="text-align: left"] {
  text-align: left;
}

.ProseMirror[style*="text-align: center"] {
  text-align: center;
}

.ProseMirror[style*="text-align: right"] {
  text-align: right;
}

.ProseMirror[style*="text-align: justify"] {
  text-align: justify;
}

.ProseMirror a.tiptap-link {
  color: #0066cc;
  text-decoration: underline;
  cursor: pointer;
}

.ProseMirror a.tiptap-link:hover {
  color: #0052a3;
}

/* Mobile-friendly Tiptap Editor Styles */
.tiptap-editor {
  width: 100%;
}

.tiptap-menu {
  max-width: 100% !important;
}

.tiptap-menu button {
  min-width: 44px;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

@media (max-width: 768px) {
  .tiptap-editor {
    padding: 10px !important;
  }

  .tiptap-editor > div {
    padding: 12px !important;
  }

  .tiptap-menu {
    padding: 6px !important;
    gap: 6px !important;
    max-width: calc(100vw - 32px) !important;
  }

  .tiptap-menu button {
    min-width: 40px;
    min-height: 40px;
    padding: 6px 10px;
    font-size: 13px;
  }

  .ProseMirror {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .tiptap-menu {
    max-width: calc(100vw - 24px) !important;
    padding: 4px !important;
    gap: 4px !important;
  }

  .tiptap-menu button {
    min-width: 36px;
    min-height: 36px;
    padding: 4px 8px;
    font-size: 12px;
  }
}

/* ============================================
   FORM STYLES
   ============================================ */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}