/**
 * Common styles - shared between home and docs pages
 *
 * Contains:
 * - CSS Variables (colors, themes)
 * - Base styles (body, links)
 * - Header components (nav, buttons, theme toggle)
 * - Search modal
 * - Scroll to top button
 */

/* ========================================
   CSS Variables - Edit these to adjust the design
   ======================================== */
:root {
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
}

html {
  scroll-behavior: smooth;
}

/* Dark theme (default) */
:root,
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-card: #1e293b;
  --bg-code: #1a1f35;
  --bg-code-header: rgba(0, 0, 0, 0.2);
  --text-primary: #e2e8f0;
  --text-heading: #ffffff;
  --text-muted: #94a3b8;
  --border: #334155;
  --hero-gradient: rgba(99, 102, 241, 0.15);
  --link-color: var(--accent-light);
  --header-bg: rgba(15, 23, 42, 0.2);
  --bg-gradient: linear-gradient(
    135deg,
    #0f172a 0%,
    #1e1b4b 35%,
    #2e1065 65%,
    #0f172a 100%
  );
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-card: #ffffff;
  --bg-code: #f1f5f9;
  --bg-code-header: rgba(0, 0, 0, 0.05);
  --text-primary: #334155;
  --text-heading: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --hero-gradient: rgba(99, 102, 241, 0.08);
  --link-color: var(--accent-dark);
  --header-bg: rgba(248, 250, 252, 0.2);
  --bg-gradient: linear-gradient(
    135deg,
    #f8fafc 0%,
    #e0e7ff 35%,
    #fae8ff 65%,
    #f8fafc 100%
  );
}

/* ========================================
   Base Styles
   ======================================== */
* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  margin: 0;
  min-height: 100vh;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

/* ========================================
   Header Components (shared)
   ======================================== */
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-img {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
  margin-right: 1.5rem;
}

.header-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.header-nav a:hover {
  color: var(--text-heading);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Icon button base style (shared by theme-toggle, search-toggle, and github-link) */
.theme-toggle,
.search-toggle,
.github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
}

.theme-toggle:hover,
.search-toggle:hover,
.github-link:hover {
  color: var(--text-heading);
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

.theme-toggle i,
.search-toggle i,
.github-link i {
  font-size: 20px;
}

/* Search toggle button */
.search-toggle {
  width: auto;
  padding: 0 0.75rem;
  gap: 0.5rem;
}

.search-shortcut {
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  background: var(--bg-code);
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
}

/* Theme toggle: show/hide sun/moon icons based on theme */
.theme-toggle .icon-sun {
  display: none;
}
.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}
[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.github-text {
  display: none;
}

/* ========================================
   Mobile Menu Toggle
   ======================================== */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
  margin-left: auto;
}

.mobile-menu-toggle:hover {
  color: var(--text-heading);
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

.mobile-menu-toggle i {
  font-size: 20px;
}

.mobile-menu-toggle .icon-close {
  display: none;
}

.global-header.menu-open .mobile-menu-toggle .icon-menu {
  display: none;
}

.global-header.menu-open .mobile-menu-toggle .icon-close {
  display: block;
}

/* Mobile responsive styles */
@media (max-width: 900px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .header-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    gap: 0;
    margin: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }

  .global-header.menu-open .header-nav {
    display: flex;
  }

  .header-nav a {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
  }

  .header-nav a:hover {
    background: rgba(99, 102, 241, 0.1);
  }

  .header-right {
    margin-left: 0.75rem;
  }

  .search-shortcut {
    display: none;
  }

  body.menu-open {
    overflow: hidden;
  }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  padding: 0.875rem 1.75rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-heading);
}

.btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ========================================
   Code blocks (shared)
   ======================================== */
pre {
  margin: 0;
  padding: 0;
  overflow-x: auto;
}

pre code {
  display: block;
  padding: 1.5rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  background: transparent !important;
}

/* ========================================
   Search Modal
   ======================================== */
.search-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  overflow-y: auto;
  scrollbar-gutter: stable both-edges;
}

.search-modal.open {
  display: flex;
}

.search-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 90%;
  max-width: 720px;
  max-height: 80vh;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.search-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.search-modal-title {
  font-weight: 600;
  color: var(--text-heading);
}

.search-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
}

.search-modal-close:hover {
  background: var(--bg-code);
  color: var(--text-heading);
}

.search-modal-close i {
  font-size: 18px;
}

/* Pagefind UI customization */
#search-container {
  --pagefind-ui-scale: 1;
  --pagefind-ui-primary: var(--accent);
  --pagefind-ui-text: var(--text-primary);
  --pagefind-ui-background: var(--bg-card);
  --pagefind-ui-border: var(--border);
  --pagefind-ui-tag: var(--bg-code);
  --pagefind-ui-border-width: 2px;
  --pagefind-ui-border-radius: 8px;
  --pagefind-ui-font: "Inter", sans-serif;
}

#search-container .pagefind-ui__form {
  padding: 1rem 1.25rem;
  position: relative;
  margin-bottom: 0;
}

#search-container .pagefind-ui__search-input {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.875rem 3rem 0.875rem 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s;
  width: 100%;
  box-sizing: border-box;
}

#search-container .pagefind-ui__search-input:focus {
  border-color: var(--accent);
  outline: none;
}

#search-container .pagefind-ui {
  display: block !important;
}

#search-container .pagefind-ui__form::before {
  display: none !important;
}

#search-container .pagefind-ui__search-clear {
  position: absolute;
  color: var(--text-muted);
  top: calc(1rem + 25px - 16px);
  right: calc(1.25rem + 12px);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  font-size: 0.875rem;
  z-index: 10;
}

#search-container .pagefind-ui__search-clear:hover {
  color: var(--text-primary);
}

#search-container .pagefind-ui__drawer {
  padding: 0 0 1.25rem !important;
}

#search-container .pagefind-ui__results-area {
  display: flex;
  flex-direction: column;
  max-height: calc(70vh - 140px);
}

#search-container .pagefind-ui__results {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
  padding-left: 0;
  margin: 0;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}

#search-container .pagefind-ui__results:hover {
  scrollbar-color: var(--border) transparent;
}

#search-container .pagefind-ui__results::-webkit-scrollbar {
  width: 8px;
}

#search-container .pagefind-ui__results::-webkit-scrollbar-track {
  background: transparent;
}

#search-container .pagefind-ui__results::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 4px;
  transition: background 0.2s;
}

#search-container .pagefind-ui__results:hover::-webkit-scrollbar-thumb {
  background: var(--border);
}

#search-container .pagefind-ui__results::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

#search-container .pagefind-ui__message {
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 0.5rem 0 1rem;
}

#search-container .pagefind-ui__result {
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: border-color 0.2s;
  flex-shrink: 0;
}

#search-container .pagefind-ui__result:hover {
  border-color: var(--accent);
}

#search-container .pagefind-ui__result-title {
  margin-bottom: 0.25rem;
}

#search-container .pagefind-ui__result-link {
  color: var(--text-heading);
  font-weight: 600;
  font-size: 1rem;
}

#search-container .pagefind-ui__result-link:hover {
  color: var(--accent);
}

#search-container .pagefind-ui__result-excerpt {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#search-container mark {
  background: rgba(99, 102, 241, 0.25);
  color: var(--accent-light);
  padding: 0.1em 0.2em;
  border-radius: 3px;
}

[data-theme="light"] #search-container mark {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-dark);
}

#search-container .pagefind-ui__result-nested {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

#search-container .pagefind-ui__result-nested .pagefind-ui__result-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--link-color);
}

#search-container .pagefind-ui__result-nested .pagefind-ui__result-excerpt {
  -webkit-line-clamp: 1;
}

#search-container .pagefind-ui__button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.2s;
}

#search-container .pagefind-ui__button:hover {
  background: var(--accent-dark);
}

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s, visibility 0.2s, transform 0.2s, background 0.2s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 1000;
}

.scroll-to-top:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top i {
  font-size: 1.5rem;
}

@media (max-width: 768px) {
  .scroll-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }

  .scroll-to-top i {
    font-size: 1.25rem;
  }
}