:root {
  --bg-color: #F9FAFB;
  --text-color: #333;
  --heading-color: #1E3A8A;
  --accent-color: #14B8A6;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --highlight-color: #F3F4F6;
  --card-bg: #FFFFFF;
  --arrow-color: #F97316;
    --bg-color: #F9FAFB;
  --text-color: #2D3748;
  --heading-color: #1E40AF;
  --accent-color: #10B981;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --transition: all 0.3s ease;
  --highlight-color: #EFF6FF;
  --header-bg-start: #1E3A8A;
  --header-bg-end: #3B82F6;
  --shape-color: rgba(59, 130, 246, 0.2);
}

body {
  font-family: 'Tajawal', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  width: 100%;
}

    .article-header {
      position: relative;
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--header-bg-start), var(--header-bg-end));
      box-shadow: var(--shadow);
      color: #fff;
      overflow: hidden;
      min-height: 300px;
      border-bottom: 4px solid var(--accent-color);
    }

    /* Static Title */
    .article-header h1 {
      font-size: 3rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: #fff;
      position: relative;
      z-index: 2;
    }

    /* Typing Animation for Subtitle */
    .article-header .subtitle {
      font-size: 1.3rem;
      color: #E5E7EB;
      max-width: 800px;
      margin: 0 auto;
      opacity: 0.9;
      font-weight: 400;
      position: relative;
      z-index: 2;
      display: inline-block;
      white-space: nowrap;
      overflow: hidden;
      border-left: 3px solid var(--accent-color);
      animation: typing 4s steps(40, end) infinite alternate,
                blink-caret 0.75s step-end infinite;
    }

    /* Typing Animation Keyframes */
    @keyframes typing {
      0%, 20% { width: 0; }
      40%, 60% { width: 100%; }
      80%, 100% { width: 0; }
    }

    @keyframes blink-caret {
      from, to { border-color: transparent; }
      50% { border-color: var(--accent-color); }
    }

    /* Dynamic Text Content */
    .subtitle span {
      display: inline-block;
      animation: text-cycle 16s infinite;
    }

    @keyframes text-cycle {
      0%, 25% { content: "دليل شامل لتحسين جودة التحليل الإحصائي"; }
      25%, 50% { content: "تجنب المزالق الشائعة في البحث العلمي"; }
      50%, 75% { content: "نصائح عملية لضمان دقة البيانات"; }
      75%, 100% { content: "تعزيز مصداقية نتائجك الإحصائية"; }
    }

    /* Background Shapes */
    .article-header::before,
    .article-header::after {
      content: '';
      position: absolute;
      background: var(--shape-color);
      border-radius: 50%;
      z-index: 1;
      animation: float 10s infinite ease-in-out;
    }

    .article-header::before {
      width: 100px;
      height: 100px;
      top: 20%;
      right: 10%;
      animation-delay: 0s;
    }

    .article-header::after {
      width: 80px;
      height: 80px;
      bottom: 20%;
      left: 15%;
      animation-delay: 3s;
    }

    @keyframes float {
      0% { transform: translateY(0) rotate(0deg); }
      50% { transform: translateY(-20px) rotate(180deg); }
      100% { transform: translateY(0) rotate(360deg); }
    }

    /* Additional Shape for Visual Depth */
    .article-header .shape {
      position: absolute;
      width: 120px;
      height: 120px;
      background: radial-gradient(circle, var(--shape-color), transparent);
      border-radius: 30%;
      top: 50%;
      right: 20%;
      animation: float-alt 12s infinite ease-in-out;
      z-index: 1;
    }

    @keyframes float-alt {
      0% { transform: translateY(0) scale(1); }
      50% { transform: translateY(30px) scale(1.2); }
      100% { transform: translateY(0) scale(1); }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
    .article-header{
      margin-top: 50px;
    }
      .article-header h1 { font-size: 2.4rem; }
      .article-header .subtitle { font-size: 1.1rem; }
      .article-header::before { width: 80px; height: 80px; }
      .article-header::after { width: 60px; height: 60px; }
      .article-header .shape { width: 100px; height: 100px; }
    }

    @media (max-width: 480px) {
      .article-header h1 { font-size: 2rem; }
      .article-header .subtitle { font-size: 0.95rem; }
      .article-header { padding: 40px 15px; min-height: 250px; }
      .article-header::before { width: 60px; height: 60px; top: 15%; right: 5%; }
      .article-header::after { width: 50px; height: 50px; bottom: 15%; left: 10%; }
      .article-header .shape { width: 80px; height: 80px; right: 15%; }
    }

.article-content {
  background: var(--card-bg);
  padding: 20px 0;
  border-radius: 10px;
  box-shadow: var(--shadow);
  width: 100%;
}

.content-wrapper {
  width: 90%;
  margin: 0 auto;
}

.section-card {
  margin-bottom: 40px;
  padding: 20px 0;
  background: #fff;
  border-radius: 8px;
  width: 100%;
}

.section-card h2 {
  font-size: 1.7rem;
  color: var(--heading-color);
  font-weight: 600;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--accent-color);
  padding-bottom: 8px;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.section-card h3 {
  font-size: 1.4rem;
  color: var(--heading-color);
  font-weight: 600;
  margin: 1.2rem 0 0.8rem;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.section-card p {
  font-size: 1rem;
  margin-bottom: 1.2rem;
  text-align: justify;
  color: #555;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.section-card ul {
  margin: 1rem 0 1.2rem 0;
  padding-left: 0;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}

.section-card li {
  margin-bottom: 0.6rem;
  padding-left: 1.5rem;
  position: relative;
}

.section-card li::before {
  content: '\2713';
  font-size: 1rem;
  position: absolute;
  left: 0;
  color: var(--accent-color);
}

.slider-break {
  margin: 20px 0;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  display: inline-block;
}

.slider-break .carousel {
  max-width: 100%;
}

.slider-break .carousel-item img {
  max-width: 500px;
  max-height: 300px;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin: 0 auto;
  display: block;
}

.slider-break .carousel-control-prev,
.slider-break .carousel-control-next {
  opacity: 0.7;
  background-color: var(--heading-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  position: absolute;
}

.slider-break .carousel-control-prev {
  left: -50px;
}

.slider-break .carousel-control-next {
  right: -50px;
}

.slider-break .carousel-control-prev:hover,
.slider-break .carousel-control-next:hover {
  opacity: 1;
  background-color: var(--arrow-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  .article-header h1 { font-size: 2.2rem; }
  .article-header .subtitle { font-size: 1rem; }
  .section-card h2 { font-size: 1.5rem; }
  .section-card h3 { font-size: 1.2rem; }
  .slider-break .carousel-item img { max-height: 150px; }
}

@media (max-width: 480px) {
  .article-header h1 { font-size: 1.8rem; }
  .article-header .subtitle { font-size: 0.9rem; }
  .section-card h2 { font-size: 1.3rem; }
  .section-card h3 { font-size: 1.1rem; }
  .slider-break .carousel-item img { max-height: 120px; }
  .article-page { padding: 15px 0; }
}