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

:root {
  --primary: #86FFAE;
  --primary-dim: rgba(134, 255, 174, 0.7);
  --secondary: #FFD922;
  --bg: #141718;
  --bg-secondary: #232627;
  --bg-elevated: #2C2F30;
  --bg-card: #1C1F20;
  --text-primary: #F0F0F0;
  --text-secondary: #A0A5A8;
  --text-tertiary: #6B7175;
  --border: #2E3233;
  --border-light: #383C3D;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.help-header {
  background: var(--bg);
  padding: 24px 24px 32px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.help-header::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse, rgba(134, 255, 174, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.help-header::after {
  content: '';
  position: absolute;
  top: -20%;
  right: 10%;
  width: 40%;
  height: 120%;
  background: radial-gradient(ellipse, rgba(255, 217, 34, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.help-header.compact {
  padding: 16px 24px;
}

.help-header.compact::before,
.help-header.compact::after {
  display: none;
}

/* Header top bar: logo left, lang right */
.help-header-bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
}

.help-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.help-logo img {
  height: 32px;
  width: auto;
}

.help-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

/* Search area below the bar */
.help-header-content {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin: 20px auto 0;
}

/* Language Switcher */
.lang-switcher select {
  appearance: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 7px 30px 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7175' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.lang-switcher select:hover {
  border-color: var(--primary);
  color: var(--text-primary);
}

.lang-switcher select option {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

/* Search */
.search-container {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: var(--transition);
  outline: none;
}

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

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(134, 255, 174, 0.1);
}

/* Main Content */
.help-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* Categories Grid */
.categories-section {
  margin-top: 24px;
  position: relative;
  z-index: 2;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

@media (max-width: 800px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.category-card:hover {
  border-color: rgba(134, 255, 174, 0.4);
  background: var(--bg-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(134, 255, 174, 0.06);
}

.category-card.active {
  border-color: var(--primary);
  background: rgba(134, 255, 174, 0.06);
  box-shadow: 0 0 0 1px var(--primary);
}

.category-icon-wrap {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(134, 255, 174, 0.08);
  color: var(--primary);
}

.category-card:hover .category-icon-wrap {
  background: rgba(134, 255, 174, 0.14);
}

.category-card.active .category-icon-wrap {
  background: rgba(134, 255, 174, 0.18);
}

.category-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.category-count {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* FAQ Section */
.faq-section {
  margin-top: 48px;
}

.faq-section-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}

.faq-section-icon {
  display: flex;
  align-items: center;
  color: var(--primary);
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 0;
  margin-bottom: 16px;
  font-family: inherit;
  transition: var(--transition);
}

.back-button:hover {
  opacity: 0.8;
}

/* FAQ Item */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
  transition: var(--transition);
  background: var(--bg-card);
}

.faq-item:hover {
  border-color: rgba(134, 255, 174, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: none;
  border: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  line-height: 1.5;
  gap: 12px;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-secondary);
}

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  transition: transform 0.25s ease;
}

.faq-chevron.open {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  animation: fadeIn 0.2s ease;
}

.faq-answer p {
  margin-bottom: 8px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer strong {
  color: var(--text-primary);
  font-weight: 600;
}

.faq-answer ul, .faq-answer ol {
  padding-left: 20px;
  margin: 8px 0;
}

.faq-answer li {
  margin-bottom: 4px;
}

.faq-answer a {
  color: var(--primary);
  text-decoration: none;
}

.faq-answer a:hover {
  text-decoration: underline;
}

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

/* Search Results */
.search-results-header {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  margin-top: 32px;
}

.search-highlight {
  background: rgba(134, 255, 174, 0.15);
  color: var(--primary);
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 500;
}

.no-results {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.no-results-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.no-results p {
  font-size: 15px;
}

/* Contact Section */
.contact-section {
  margin-top: 56px;
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.contact-section h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.contact-section p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--bg);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

.contact-email:hover {
  background: #6DE898;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(134, 255, 174, 0.2);
}

/* Footer */
.help-footer {
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 640px) {
  .help-header {
    padding: 20px 16px 24px;
  }

  .help-header.compact {
    padding: 14px 16px;
  }

  .help-logo-text {
    font-size: 16px;
  }

  .categories-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px;
  }

  .category-card {
    padding: 20px 16px;
  }

  .category-icon {
    font-size: 28px;
  }

  .help-main {
    padding: 0 16px 60px;
  }

  .faq-question {
    padding: 14px 16px;
    font-size: 13px;
  }

  .faq-answer {
    padding: 0 16px 14px;
    font-size: 13px;
  }
}

@media (max-width: 380px) {
  .categories-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .category-card {
    padding: 16px 12px;
  }

  .category-name {
    font-size: 13px;
  }
}

/* RTL support for Arabic */
[dir="rtl"] .help-header-bar {
  flex-direction: row-reverse;
}

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

[dir="rtl"] .faq-question {
  text-align: right;
  flex-direction: row-reverse;
}

[dir="rtl"] .faq-answer {
  text-align: right;
  direction: rtl;
}

[dir="rtl"] .faq-answer ul,
[dir="rtl"] .faq-answer ol {
  padding-left: 0;
  padding-right: 20px;
}

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

[dir="rtl"] .faq-section-title {
  flex-direction: row-reverse;
}

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

[dir="rtl"] .search-input {
  padding: 14px 44px 14px 16px;
}

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