/* Helium Search — Styles */

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

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-text: #1a1a2e;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-card-bg: #ffffff;
  --color-card-shadow: rgba(0, 0, 0, 0.04);
  --color-error: #ef4444;
  --color-error-bg: #fef2f2;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-input: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-input-focus: 0 4px 20px rgba(37, 99, 235, 0.15);
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --content-max-width: 680px;
}

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* ── Views ── */

.view {
  display: none;
}

.view.active {
  display: block;
}

/* ── Home View ── */

.home-view {
  display: none;
  position: relative;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

.home-view.active {
  display: flex;
}

.home-content {
  text-align: center;
  width: 100%;
  max-width: 580px;
  padding: 0 24px;
  animation: fadeInUp 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.brand-he {
  color: var(--color-primary);
}

.tagline {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  font-weight: 400;
}

/* ── Search Form ── */

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 16px;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.search-input {
  width: 100%;
  padding: 14px 48px 14px 48px;
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.search-input:hover {
  border-color: var(--color-border-hover);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-input-focus);
}

.search-input:focus ~ .search-icon,
.search-input:focus + .search-icon {
  color: var(--color-primary);
}

.search-input-wrap:focus-within .search-icon {
  color: var(--color-primary);
}

.search-clear {
  position: absolute;
  right: 12px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.search-clear svg {
  width: 16px;
  height: 16px;
}

.search-clear:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

/* Home search form */
.search-form--home .search-input {
  padding: 16px 52px 16px 52px;
  font-size: 1.05rem;
  box-shadow: var(--shadow-sm);
}

.search-form--home .search-input:focus {
  box-shadow: var(--shadow-input-focus);
}

.search-form--home .search-icon {
  width: 22px;
  height: 22px;
  left: 18px;
}

.search-form--home .search-clear {
  right: 14px;
}

/* ── Results View ── */

.results-view.active {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.results-header {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.results-brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

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

.search-form--results {
  flex: 0 1 560px;
  min-width: 0;
}

/* ── Results Content ── */

.results-content {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  animation: fadeIn 300ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── Loading ── */

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 0;
}

.loading-dots {
  display: flex;
  gap: 6px;
}

.loading-dots span {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: dotPulse 1.2s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes dotPulse {
  0%, 80%, 100% {
    opacity: 0.25;
    transform: scale(0.8);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

.loading-text {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: opacity 200ms ease;
}

.loading-text.fade {
  opacity: 0;
}

/* ── Error ── */

.error-message {
  padding: 16px 20px;
  background: var(--color-error-bg);
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  color: var(--color-error);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ── Answer Section (info type) ── */

.answer-section {
  margin-bottom: 28px;
}

.answer-text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
  white-space: pre-line;
}

/* ── Sources Section ── */

.sources-section {
  margin-bottom: 28px;
}

.sources-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  background: none;
  border: none;
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.sources-toggle:hover {
  color: var(--color-primary);
}

.sources-toggle-icon {
  display: inline-flex;
  transition: transform var(--transition-base);
}

.sources-toggle.expanded .sources-toggle-icon {
  transform: rotate(90deg);
}

.sources-list {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.sources-list.expanded {
  display: flex;
}

.source-card {
  display: block;
  padding: 14px 18px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.source-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.source-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 2px;
  line-height: 1.4;
}

.source-url {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-snippet {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Sites Section (site type) ── */

.sites-section {
  margin-bottom: 28px;
}

.sites-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-card {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.site-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.site-rank {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.site-info {
  min-width: 0;
  flex: 1;
}

.site-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.site-url {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── Ad Slot ── */

.ad-slot {
  margin-bottom: 28px;
  padding: 20px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.ad-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

/* ── Related Searches ── */

.related-section {
  margin-top: 8px;
}

.related-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.related-header svg {
  width: 18px;
  height: 18px;
}

.related-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: 0.9rem;
  color: var(--color-text);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.related-chip:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.related-chip svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.related-chip:hover svg {
  color: var(--color-primary);
}

/* ── Language Switcher ── */

.lang-switcher {
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 200;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.lang-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.lang-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.lang-chevron {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.lang-switcher:has(.lang-dropdown.open) .lang-chevron {
  transform: rotate(180deg);
}

.lang-btn--compact {
  padding: 8px;
  border-radius: var(--radius-full);
}

.lang-btn--compact .lang-icon {
  width: 20px;
  height: 20px;
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 300;
  animation: dropdownFadeIn 150ms ease;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.lang-dropdown.open {
  display: flex;
  flex-direction: column;
}

.lang-dropdown::-webkit-scrollbar {
  width: 6px;
}

.lang-dropdown::-webkit-scrollbar-track {
  background: transparent;
}

.lang-dropdown::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.lang-dropdown::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lang-option {
  display: block;
  width: 100%;
  padding: 9px 14px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 0.88rem;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-option:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.lang-option.active {
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 500;
}

.lang-option.active:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
}

.lang-switcher--results {
  position: relative;
  top: auto;
  right: auto;
  flex-shrink: 0;
}

/* ── RTL Support ── */

[dir="rtl"] .search-icon {
  left: auto;
  right: 16px;
}

[dir="rtl"] .search-clear {
  right: auto;
  left: 12px;
}

[dir="rtl"] .search-form--home .search-icon {
  left: auto;
  right: 18px;
}

[dir="rtl"] .search-form--home .search-clear {
  right: auto;
  left: 14px;
}

[dir="rtl"] .lang-switcher {
  right: auto;
  left: 24px;
}

[dir="rtl"] .lang-dropdown {
  right: auto;
  left: 0;
}

[dir="rtl"] .lang-option {
  text-align: right;
}

[dir="rtl"] .site-card {
  flex-direction: row-reverse;
}

[dir="rtl"] .related-chip {
  flex-direction: row-reverse;
}

[dir="rtl"] .results-header {
  flex-direction: row-reverse;
}

[dir="rtl"] .sources-toggle {
  flex-direction: row-reverse;
}

[dir="rtl"] .source-url,
[dir="rtl"] .site-url {
  direction: ltr;
  text-align: right;
}

/* ── Responsive ── */

@media (max-width: 640px) {
  .brand {
    font-size: 2.4rem;
  }

  .home-content {
    padding: 0 16px;
  }

  .results-header {
    padding: 12px 16px;
    gap: 14px;
  }

  .results-brand {
    font-size: 1.15rem;
  }

  .results-content {
    padding: 24px 16px 48px;
  }

  .search-form--home .search-input {
    padding: 14px 44px 14px 44px;
    font-size: 1rem;
  }

  .site-card {
    padding: 14px 16px;
    gap: 12px;
  }

  .related-chip {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .lang-switcher {
    top: 14px;
    right: 16px;
  }

  .lang-btn-text {
    display: none;
  }

  .lang-btn {
    padding: 8px;
  }

  [dir="rtl"] .lang-switcher {
    right: auto;
    left: 16px;
  }
}

@media (max-width: 380px) {
  .brand {
    font-size: 2rem;
  }

  .tagline {
    font-size: 0.9rem;
  }

  .results-brand {
    display: none;
  }

  .lang-btn--compact .lang-icon {
    width: 18px;
    height: 18px;
  }
}