:root {
  --bg-color: #0b0914;
  --card-bg: rgba(25, 20, 45, 0.7);
  --card-border: rgba(139, 92, 246, 0.2);
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --accent: #a855f7;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --danger: #ef4444;
  --success: #10b981;
  --radius: 16px;
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Vazirmatn', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  direction: rtl;
}

/* Background Stars Animation */
:root {
  --bg-color: #05030a; /* تیره‌تر و کهکشانی‌تر */
  --card-bg: rgba(20, 15, 35, 0.75);
  --card-border: rgba(139, 92, 246, 0.25);
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --accent: #c084fc;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --danger: #ef4444;
  --success: #10b981;
  --radius: 16px;
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Vazirmatn', sans-serif;
}

body {
  background-color: var(--bg-color);
  /* ایجاد نورهای نئونی محو بنفش در پس‌زمینه (استایل کهکشانی) */
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(168, 85, 247, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(76, 29, 149, 0.1) 0%, transparent 60%);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  direction: rtl;
  background-attachment: fixed;
}

/* ستاره‌های متحرک و پویا برای پس‌زمینه کهکشانی */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 140px 70px, #e9d5ff, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 90px 140px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 200px 220px, #c084fc, rgba(0,0,0,0));
  background-repeat: repeat;
  background-size: 250px 250px;
  opacity: 0.35;
  z-index: -1;
  animation: starTwinkle 8s infinite alternate;
}

@keyframes starTwinkle {
  0% { opacity: 0.25; transform: scale(1); }
  100% { opacity: 0.45; transform: scale(1.02); }
}

.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

/* TOPBAR */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
}

.logo-icon {
  font-size: 22px;
}

.topbar-nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(139, 92, 246, 0.15);
}

/* HERO SECTION */
.hero {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.05));
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.hero-badge {
  display: inline-block;
  background: rgba(139, 92, 246, 0.2);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.hero h1 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  color: #fff;
}

.hero p {
  color: var(--text-muted);
  font-size: 14px;
}

/* CATEGORIES */
.categories {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 24px;
  scrollbar-width: none;
}

.categories::-webkit-scrollbar {
  display: none;
}

.cat-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.cat-btn:hover, .cat-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* STATS ROW */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 16px;
  border-radius: var(--radius);
  text-align: center;
}

.stat-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* PINNED STRIP */
.pinned-strip {
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
}

/* GRID & CARDS */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: 16px;
  font-weight: 700;
}

.meta-text {
  font-size: 12px;
  color: var(--text-muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.card-icon {
  font-size: 28px;
  background: rgba(139, 92, 246, 0.1);
  padding: 10px;
  border-radius: 12px;
}

.badge-new {
  background: var(--success);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 600;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.card-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--card-border);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
}

.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

/* CONTACT CTA BOX */
.contact-cta {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 20px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
}

.contact-cta-icon {
  font-size: 32px;
}

.contact-cta-title {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-cta-desc {
  font-size: 13px;
  color: var(--text-muted);
}

.contact-cta .btn {
  margin-right: auto;
}

/* CONTACT FORM STYLES */
.contact-form-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 24px;
  border-radius: var(--radius);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.req {
  color: var(--danger);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: rgba(11, 9, 20, 0.6);
  border: 1px solid var(--card-border);
  padding: 12px;
  border-radius: 12px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.char-count {
  text-align: left;
}

.success-banner {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 16px;
  border-radius: 12px;
  display: flex;
  gap: 12px;
  align-items: center;
  color: #34d399;
}

.error-banner {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 12px;
  border-radius: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  color: #f87171;
  margin-bottom: 16px;
  font-size: 13px;
}

.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.info-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 16px;
  border-radius: var(--radius);
  text-align: center;
}

.info-card-icon {
  font-size: 20px;
  margin-bottom: 8px;
}

.info-card-title {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}

.info-card-desc {
  font-size: 11px;
  color: var(--text-muted);
}

/* RESPONSIVE */
@media(max-width: 600px) {
  .stats-row, .info-cards {
    grid-template-columns: 1fr;
  }
  .contact-cta {
    flex-direction: column;
    align-items: flex-start;
  }
  .contact-cta .btn {
    margin-right: 0;
    width: 100%;
  }
}