/* ==========================================================================
   MINDBOOK OFFICIAL DESIGN SYSTEM — GOOGLE HELP & POLICY CENTER THEME
   Inspired by Google Support (support.google.com) & Material Design 3
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@400;500;700&family=Roboto:ital,wght@0,300;0,400;0,500;0,700;1,400&family=Google+Sans+Text:wght@400;500&display=swap');

:root {
  /* Google Core Colors */
  --google-blue: #1A73E8;
  --google-blue-hover: #174EA6;
  --google-blue-active: #185ABC;
  --google-blue-surface: #E8F0FE;
  
  --google-red: #D93025;
  --google-red-surface: #FCE8E6;
  
  --google-green: #1E8E3E;
  --google-green-surface: #E6F4EA;
  
  --google-yellow: #F9AB00;
  --google-yellow-surface: #FEF7E0;
  
  /* Neutral Surfaces & Backgrounds */
  --bg-page: #FFFFFF;
  --bg-subtle: #F8F9FA;
  --bg-card: #FFFFFF;
  --bg-hover: #F1F3F4;
  
  /* Borders */
  --border-light: #E8EAED;
  --border-color: #DADCE0;
  --border-focus: #1A73E8;
  
  /* Typography Colors */
  --text-primary: #202124;
  --text-secondary: #3C4043;
  --text-muted: #5F6368;
  --text-disabled: #80868B;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
  --shadow-md: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
  --shadow-card: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 2px 6px 2px rgba(60, 64, 67, 0.15);
  
  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  
  --font-family: 'Google Sans', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  --font-text: 'Google Sans Text', 'Roboto', -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --max-w: 1140px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  font-family: var(--font-text);
  background-color: var(--bg-page);
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5 {
  font-family: var(--font-family);
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.3;
}

h1 { font-size: 2.25rem; letter-spacing: -0.01em; }
h2 { font-size: 1.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 14px;
}

a {
  color: var(--google-blue);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

a:hover {
  text-decoration: underline;
  color: var(--google-blue-hover);
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Google Support Navigation Bar
   ========================================================================== */
.google-nav {
  position: sticky;
  top: 0;
  width: 100%;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  box-shadow: 0 1px 2px rgba(60,64,67,0.06);
}

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

.nav-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary) !important;
  text-decoration: none !important;
  font-family: var(--font-family);
  font-size: 1.25rem;
  font-weight: 500;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 1px 3px rgba(60, 64, 67, 0.2);
  flex-shrink: 0;
  display: block;
}

.footer-brand-icon {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  object-fit: cover;
  display: inline-block;
  vertical-align: middle;
}

.brand-hub-title {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 1.15rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-item a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none !important;
  transition: var(--transition);
}

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

.nav-item a.active {
  background-color: var(--google-blue-surface);
  color: var(--google-blue);
  font-weight: 600;
}

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

.btn-get-app {
  background-color: var(--google-blue);
  color: #FFFFFF !important;
  padding: 8px 20px;
  border-radius: var(--radius-xs);
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none !important;
  box-shadow: 0 1px 2px rgba(60,64,67,0.3);
}

.btn-get-app:hover {
  background-color: var(--google-blue-hover);
  box-shadow: 0 1px 3px 1px rgba(60,64,67,0.15);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   Google Search Hero Section
   ========================================================================== */
.hero-search-section {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
  padding: 48px 0 56px;
  text-align: center;
}

.hero-search-section h1 {
  font-size: 2.3rem;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.google-search-bar {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  box-shadow: 0 2px 6px rgba(60,64,67,0.15);
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  border: 1px solid transparent;
  transition: var(--transition);
}

.google-search-bar:focus-within {
  box-shadow: 0 1px 6px rgba(32,33,36,0.28);
  border-color: rgba(223,225,229,0);
}

.google-search-inner {
  display: flex;
  align-items: center;
  padding: 0 20px;
  height: 52px;
}

.search-icon-svg {
  width: 20px;
  height: 20px;
  fill: var(--text-muted);
  margin-right: 14px;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  background: transparent;
}

.search-input::placeholder {
  color: var(--text-muted);
}

/* ==========================================================================
   Breadcrumb Bar (Google Style)
   ========================================================================== */
.breadcrumb-bar {
  padding: 16px 0 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumb-list a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  color: var(--google-blue);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--text-disabled);
  font-size: 0.8rem;
}

/* ==========================================================================
   Two-Column Article Layout (Google Help / Google Policies)
   ========================================================================== */
.article-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 24px 0 64px;
  align-items: start;
}

.article-sidebar {
  position: sticky;
  top: 88px;
}

.sidebar-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 12px;
  padding-left: 12px;
}

.sidebar-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-link {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none !important;
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.sidebar-link:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-link.active {
  background-color: var(--google-blue-surface);
  color: var(--google-blue);
  font-weight: 500;
  border-left-color: var(--google-blue);
}

/* Article Body */
.article-main {
  max-width: 820px;
}

.article-header {
  margin-bottom: 32px;
}

.article-header h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

.article-body section {
  margin-bottom: 36px;
}

.article-body h2 {
  font-size: 1.45rem;
  color: var(--text-primary);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.article-body h2:first-of-type {
  margin-top: 0;
}

.article-body h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin: 22px 0 10px;
}

.article-body p, .article-body li {
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.article-body ul, .article-body ol {
  padding-left: 28px;
  margin-bottom: 20px;
}

.article-body li {
  margin-bottom: 8px;
}

/* Google Style Alert / Callout Boxes */
.google-callout {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: var(--google-blue-surface);
  border-left: 4px solid var(--google-blue);
  margin: 24px 0;
}

.google-callout.warning {
  background: var(--google-yellow-surface);
  border-left-color: var(--google-yellow);
}

.google-callout.danger {
  background: var(--google-red-surface);
  border-left-color: var(--google-red);
}

.google-callout.success {
  background: var(--google-green-surface);
  border-left-color: var(--google-green);
}

.callout-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.callout-content {
  font-size: 0.94rem;
  color: var(--text-primary);
}

.callout-content p {
  margin: 0;
  color: var(--text-primary);
}

/* ==========================================================================
   Google Topic Cards Grid (Help Center Homepage)
   ========================================================================== */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin: 40px 0 56px;
}

.topic-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  text-decoration: none !important;
  color: inherit !important;
}

.topic-card:hover {
  box-shadow: var(--shadow-card);
  border-color: transparent;
  transform: translateY(-2px);
}

.topic-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--google-blue-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  color: var(--google-blue);
}

.topic-card h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.topic-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex: 1;
}

.topic-link-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--google-blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   Google Accordion (FAQs)
   ========================================================================== */
.google-accordion {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 24px 0;
}

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

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  background: #FFFFFF;
  border: none;
  padding: 18px 24px;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.accordion-header:hover {
  background-color: var(--bg-hover);
}

.accordion-chevron {
  width: 20px;
  height: 20px;
  fill: var(--text-muted);
  transition: transform 0.25s ease;
}

.accordion-item.open .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-body {
  display: none;
  padding: 16px 24px 24px;
  background: #FFFFFF;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.accordion-item.open .accordion-body {
  display: block;
}

/* ==========================================================================
   Google Forms & Inputs (Account Deletion & Support)
   ========================================================================== */
.google-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 32px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 24px;
  text-align: left;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  height: 48px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  padding: 0 16px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: #FFFFFF;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--google-blue);
  box-shadow: 0 0 0 1px var(--google-blue);
}

textarea.form-control {
  height: auto;
  min-height: 120px;
  padding: 12px 16px;
  resize: vertical;
}

.btn-google {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-xs);
  font-family: var(--font-family);
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-google-primary {
  background-color: var(--google-blue);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(60,64,67,0.3);
}

.btn-google-primary:hover {
  background-color: var(--google-blue-hover);
  box-shadow: 0 1px 3px 1px rgba(60,64,67,0.15);
}

.btn-google-danger {
  background-color: var(--google-red);
  color: #FFFFFF;
}

.btn-google-danger:hover {
  background-color: #B31412;
}

.btn-google-outlined {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--google-blue);
}

.btn-google-outlined:hover {
  background-color: var(--google-blue-surface);
  border-color: transparent;
}

/* ==========================================================================
   Google "Was this helpful?" Feedback Widget
   ========================================================================== */
.helpful-widget {
  margin-top: 48px;
  padding: 24px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.helpful-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

.helpful-buttons {
  display: flex;
  gap: 12px;
}

.btn-feedback {
  padding: 8px 20px;
  border-radius: var(--radius-xs);
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  color: var(--google-blue);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-feedback:hover {
  background: var(--google-blue-surface);
  border-color: var(--google-blue);
}

/* ==========================================================================
   Google Support Minimal Footer
   ========================================================================== */
.google-footer {
  margin-top: auto;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  padding: 40px 0 32px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-nav {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  font-weight: 400;
}

.footer-nav a:hover {
  color: var(--google-blue);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.language-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

/* ==================== RESPONSIVE ENHANCEMENTS ==================== */
@media (max-width: 1200px) {
  .container {
    max-width: 95%;
    padding: 0 20px;
  }
}

@media (max-width: 860px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .nav-links {
    display: none;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .hero-search-section {
    padding: 48px 16px;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }
  .hero-search-section h1 {
    font-size: 1.65rem;
  }
  .topic-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .google-search-bar {
    width: 100%;
  }
  .footer-top, .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
  .helpful-widget {
    flex-direction: column;
    align-items: flex-start;
  }
}