/* === PAGE LAYOUT === */
.course-content {
  padding: 2rem;
  max-width: 1200px;
  margin: auto;
}

.course-columns {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.column-left,
.column-right {
  flex: 1 1 48%;
  min-width: 300px;
}

/* === COURSE HEADER === */
.course-header-box {
  background-color: #f9fafb;
  padding: 1.5rem 2rem;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  margin-bottom: 2rem;
}

.course-title {
  font-size: 2rem;
  font-weight: 800;
  color: #1f2937;
  margin-bottom: 0.3rem;
}

.instructor-name {
  font-size: 1rem;
  color: #374151;
  margin-bottom: 1rem;
}

.instructor-bio {
  font-size: 0.95rem;
  color: #6b7280;
  margin-bottom: 1rem;
}

/* === LIVE ANNOUNCEMENT === */
.live-announcement {
  background-color: #eff6ff;
  padding: 0.75rem 1.25rem;
  border-left: 4px solid #3b82f6;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: #1e3a8a;
}

.live-icon {
  font-size: 1.2rem;
}

.live-badge {
  background-color: #dc2626;
  color: white;
  font-size: 0.7rem;
  font-weight: bold;
  padding: 4px 8px;
  border-radius: 999px;
  margin-left: auto;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* === PLAYLIST & PDF CARDS === */
.playlist-item,
.pdf-item {
  display: flex;
  align-items: center;
  position: relative;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  cursor: pointer;
  overflow: hidden;
  transition: background-color 0.3s ease;
  margin-bottom: 1rem;
}

.playlist-item:hover,
.pdf-item:hover {
  background-color: #f9fafb;
}

.playlist-thumbnail {
  width: 140px;
  height: 80px;
  border-radius: 8px;
  object-fit: cover;
  filter: brightness(0.75);
}

.playlist-info,
.pdf-info {
  padding-left: 16px;
}

.playlist-title,
.pdf-info h4 {
  font-size: 1rem;
  font-weight: bold;
  color: #1f2937;
  margin-bottom: 4px;
}

.playlist-status,
.pdf-info p {
  font-size: 0.9rem;
  color: #6b7280;
  margin: 0;
}

/* === HOVER BAR === */
.hover-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(31, 41, 55, 0.92);
  color: #fff;
  font-size: 0.85rem;
  text-align: center;
  padding: 0.6rem 1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  z-index: 2;
  pointer-events: none;
}

.hover-bar a {
  color: #3b82f6;
  font-weight: 600;
  text-decoration: underline;
}

.playlist-item:hover .hover-bar,
.pdf-item:hover .hover-bar {
  opacity: 1;
}

/* === MAKE ENTIRE ITEM A LINK === */
.playlist-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.playlist-link:hover {
  text-decoration: none;
}
 .welcome-msg {
    margin-right: 10px;
    font-weight: bold;
    color: #4a00e0;
  }


   /* تصميم عصري بألوان محسّنة لقسم الدفع */
  #pay-methods-section {
    margin: 2rem 0;
    padding: 0;
    background: #fdfdff;
    border-radius: 16px;
    box-shadow: 0 2px 18px rgba(0, 0, 0, 0.04);
    max-width: 100vw;
    width: 100vw;
    border: 1px solid #e0e4f0;
    position: relative;
    left: 50%;
    right: 50%;
    transform: translateX(-50%);
    /* فراغ من الأطراف */
    box-sizing: border-box;
  }
  @media (min-width: 700px) {
    #pay-methods-section {
      max-width: 98vw;
      width: 98vw;
      margin-left: 1vw;
      margin-right: 1vw;
    }
  }
  @media (max-width: 700px) {
    #pay-methods-section {
      max-width: 100vw;
      width: 100vw;
      border-radius: 0;
      margin: 0;
    }
  }
  .pay-methods-list {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
  }

  #pay-methods-section h2 {
    color: #4c1d95;
    text-align: center;
    font-size: 1.7em;
    font-weight: 800;
    margin: 1.5rem 0 1rem 0;
  }

  #pay-methods-section ol {
    counter-reset: step;
    list-style: none;
    padding-right: 0;
    padding-left: 0;
  }
  #pay-methods-section ol li {
    position: relative;
    padding-right: 2.2em;
    margin-bottom: 0.7em;
    font-weight: 500;
  }
  #pay-methods-section ol li::before {
    counter-increment: step;
    content: ": الخطوة " counter(step) " ";
    position: absolute;
    right: 0;
    color: #2563eb;
    font-weight: bold;
    font-size: 1em;
    min-width: 80px;
    text-align: right;
  }

  #pay-methods-section ol {
    background: #ffffff;
    border-radius: 10px;
    padding: 1rem 1.5rem;
    margin: 0 auto 2rem auto;
    font-size: 1.05em;
    font-weight: 500;
    max-width: 640px;
    color: #333;
    border: 1px solid #dee2e6;
    box-shadow: 0 1px 5px rgba(76, 29, 149, 0.05);
    line-height: 1.7;
  }

  #pay-methods-section ol li {
    margin-bottom: 0.6em;
  }

  .pay-methods-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
  }

  .pay-card {
    background: #ffffff;
    border: 1px solid #d6d9e7;
    border-radius: 12px;
    padding: 1.3rem 1rem;
    flex: 1 1 280px;
    max-width: 360px;
    min-width: 240px;
    box-shadow: 0 3px 8px rgba(76, 29, 149, 0.06);
    position: relative;
    font-size: 1em;
  }

  .pay-card h3 {
    margin: 0 0 0.8rem;
    text-align: center;
    font-size: 1.1em;
    font-weight: 700;
    color: #4c1d95;
  }

  .pay-card p {
    text-align: center;
    margin-bottom: 1rem;
    color: #444;
  }

  #pay-methods-section .pay-card ul {
    direction: rtl;
    text-align: right;
    padding-right: 0;
    margin-right: 0;
  }
  #pay-methods-section .pay-card ul li {
    margin-bottom: 0.3em;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: #1e293b;
    font-size: 0.97em;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.3em;
  }
  #pay-methods-section .pay-card ul li b {
    color: #2563eb;
    margin-left: 3px;
    font-weight: bold;
    font-size: 1em;
    min-width: 70px;
    display: inline-block;
  }
  #pay-methods-section .pay-card ul li span,
  #pay-methods-section .pay-card ul li .copy-btn,
  #pay-methods-section .pay-card ul li .copied-msg {
    display: inline-block;
    vertical-align: middle;
    margin-right: 0;
    margin-left: 0;
    font-family: inherit;
    font-size: 1em;
    direction: ltr;
    color: #334155;
    font-weight: 500;
  }
  #pay-methods-section .pay-card ul li .copy-btn {
    margin-right: 8px;
    margin-left: 0;
  }
  #pay-methods-section .pay-card ul li .copied-msg {
    margin-right: 8px;
    color: #059669;
  }
  /* Rip في سطر واحد */
  #pay-methods-section .poste-data span.rip-value {
    direction: ltr;
    font-weight: bold;
    color: #2563eb;
    font-size: 1em;
    display: inline-block;
    margin-bottom: 0;
    margin-top: 0;
    letter-spacing: 1px;
    word-break: break-all;
  }
  #pay-methods-section .poste-data .copy-btn,
  #pay-methods-section .poste-data .copied-msg {
    margin-right: 8px;
    margin-left: 0;
    vertical-align: middle;
  }

  .badge {
    position: absolute;
    top: -14px;
    right: 16px;
    background: #14b8a6;
    color: #fff;
    padding: 4px 10px;
    font-size: 0.9em;
    border-radius: 7px;
    font-weight: bold;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  }

  .poste-logo {
    text-align: center;
    margin-bottom: 0.5rem;
  }

  .poste-logo img {
    width: 60px;
    filter: grayscale(0.3) brightness(0.9);
  }

  .poste-data {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 14px;
    padding: 0.9rem;
    background: #f3f4f6;
    border-radius: 8px;
    font-size: 0.98em;
    border: 1px solid #e0e4f0;
    direction: ltr;
  }

  .poste-data span:first-child {
    color: #4c1d95;
    font-weight: bold;
  }

  .poste-data span:last-child {
    font-weight: 600;
    color: #333;
  }

  .poste-note {
    margin-top: 1rem;
    text-align: center;
    background: #ecfdf5;
    color: #065f46;
    font-weight: 500;
    padding: 0.6rem 0.5rem;
    border-radius: 6px;
    font-size: 0.95em;
  }

  .copy-btn {
    background: #f1f5f9;
    border: none;
    border-radius: 4px;
    padding: 2px 8px;
    margin-left: 5px;
    font-size: 0.9em;
    cursor: pointer;
    transition: background 0.2s ease;
    color: #4c1d95;
    font-weight: 500;
  }

  .copy-btn:hover {
    background: #e0e7ff;
  }

  .copied-msg {
    color: #16a34a;
    font-size: 0.9em;
    margin-left: 6px;
    display: none;
  }

  .copied-msg.active {
    display: inline;
    animation: fadeOut 1.3s forwards;
  }

  @keyframes fadeOut {
    0% { opacity: 1;}
    80% { opacity: 1;}
    100% { opacity: 0;}
  }

  @media (max-width: 700px) {
    #pay-methods-section h2 {
      font-size: 1.3em;
    }
    #pay-methods-section ol {
      font-size: 0.97em;
    }
    .pay-methods-list {
      flex-direction: column;
      gap: 1rem;
    }
    .pay-card {
      max-width: 100%;
      padding: 1rem 0.9rem;
    }
  }

  .steps-list {
    list-style: none;
    padding: 0;
    margin: 0 auto 2rem auto;
    background: #fff;
    border-radius: 12px;
    max-width: 650px;
    border: 1px solid #dee2e6;
    box-shadow: 0 1px 5px rgba(76, 29, 149, 0.05);
    font-size: 1.08em;
    font-weight: 500;
    color: #22223b;
    line-height: 1.8;
    direction: rtl;
    text-align: right;
  }
  .steps-list li {
    position: relative;
    padding: 1rem 7.5em 1rem 1.2em;
    margin-bottom: 0;
    border-bottom: 1px solid #f3f4f6;
    min-height: 2.5em;
  }
  .steps-list li:last-child {
    border-bottom: none;
  }
  .steps-list li::before {
    content: "الخطوة " attr(data-step) " ";
    position: absolute;
    right: 1.2em;
    top: 50%;
    transform: translateY(-50%);
    background: none; /* إزالة الخلفية الزرقاء */
    color: #2563eb;
    font-weight: bold;
    font-size: 1.05em;
    border-radius: 0;
    padding: 0;
    min-width: 90px;
    text-align: center;
    box-shadow: none;
    letter-spacing: 0.5px;
    display: inline-block;
  }
  @media (max-width: 700px) {
    .steps-list {
      font-size: 0.97em;
      padding: 0;
    }
    .steps-list li {
      padding: 0.9rem 6em 0.9rem 0.7em;
      font-size: 1em;
    }
    .steps-list li::before {
      font-size: 0.98em;
      min-width: 70px;
      padding: 0.18em 0.7em;
      right: 0.7em;
    }
  }

  /* اجعل رقم RIP لا يلتف للسطر التالي */
  .rip-value {
    white-space: nowrap;
  }

  .pay-card {
  background: #ffffff;
  border: 1px solid #d6d9e7;
  border-radius: 14px;
  padding: 1.8rem 1.5rem;
  flex: 1 1 500px; /* مساحة مبدئية واسعة */
  max-width: 720px; /* عرض البطاقة الأقصى */
  min-width: 340px; /* أصغر عرض مسموح به */
  width: 100%;
  box-shadow: 0 4px 12px rgba(76, 29, 149, 0.1);
  position: relative;
  font-size: 1.1em; /* حجم الخط داخل البطاقة */
  margin: 0 auto; /* توسيط البطاقة */
}

.poste-data {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px 18px;
  font-size: 1.15rem;
  line-height: 2;
  color: #1e293b;
  background-color: #f9fafb;
  padding: 1.4rem;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  max-width: 520px;
  width: 100%;
  margin: 1.2rem auto 0 auto;
}
/* ✅ تحسين شامل لعرض صفحة Math 3 على الهاتف */
@media (max-width: 600px) {

  /* 🟣 تهيئة عامة */
  body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background: #fafafa;
  }

  .course-content {
    padding: 1rem;
    max-width: 100%;
  }

  /* 🟢 رأس الصفحة */
  .course-header-box {
    padding: 1.2rem 1rem;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    text-align: center;
  }

  .course-title {
    font-size: 1.4rem;
    line-height: 1.4;
  }

  .instructor-name,
  .instructor-bio {
    text-align: center;
    font-size: 0.95rem;
  }

  /* 🟠 بطاقات الفيديوهات */
  .playlist-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .playlist-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    border-radius: 14px;
  }

  .playlist-thumbnail {
    width: 100%;
    max-width: 330px;
    height: auto;
    margin-bottom: 0.7rem;
    border-radius: 12px;
    object-fit: cover;
  }

  .playlist-info h4 {
    font-size: 1rem;
    line-height: 1.5;
  }

  .hover-bar {
    font-size: 0.9rem;
    padding: 0.5rem;
  }

  /* 🔵 قسم الدفع */
  #pay-methods-section {
    width: 100vw;
    border-radius: 0;
    margin: 1rem 0 0 0;
    box-shadow: none;
    border: none;
  }

  #pay-methods-section h2 {
    font-size: 1.3rem;
  }

  .pay-card {
    width: 90%;
    margin: 0.8rem auto;
    font-size: 1rem;
    padding: 1.2rem;
  }

  .poste-data {
    font-size: 0.95rem;
    grid-template-columns: 100px 1fr;
    gap: 6px 10px;
    padding: 1rem;
  }

  /* 🟡 قسم التواصل */
  .contact-form {
    padding: 1.5rem 1rem;
  }

  .contact-form input,
  .contact-form textarea {
    width: 100%;
    font-size: 1rem;
    border-radius: 10px;
  }

  .contact-form button {
    width: 100%;
    font-size: 1rem;
    border-radius: 10px;
    background: linear-gradient(135deg, #6d28d9, #8b5cf6);
    color: #fff;
    border: none;
  }

  /* 🟣 الفوتر */
  .main-footer {
    padding: 1.5rem 1rem;
    text-align: center;
  }

  .footer-section {
    margin-bottom: 1.5rem;
  }

  .footer-section h3 {
    font-size: 1.1rem;
  }

  .footer-section p,
  .footer-section a {
    font-size: 0.95rem;
    line-height: 1.6;
  }
}
/* 🎯 تحسين مظهر روابط التنقل (آراء الطلاب + حول المنصة) */
.nav-link[href*="#student-feedback"],
.nav-link[href*="#why-us"] {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 400;             /* وزن مريح واحترافي */
  font-size: 0.93rem;
  color: #111111;               /* أسود مريح للعين */
  text-decoration: none;        /* إزالة الخط السفلي */
  transition: color 0.25s ease-in-out, transform 0.2s ease-in-out;
}

/* 💫 تأثير عند المرور */
.nav-link[href*="#student-feedback"]:hover,
.nav-link[href*="#why-us"]:hover {
  color: #333333;               /* أسود أفتح قليلًا */
  transform: translateY(-1px);  /* حركة خفيفة للأعلى */
}
.math3-join-button {
  margin-top: 1.5rem;
}
.math3-btn-join {
  display: inline-block;
  background: linear-gradient(135deg, #6d28d9, #8b5cf6);
  color: #fff;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(91, 33, 182, 0.3);
}
.math3-btn-join:hover {
  background: linear-gradient(135deg, #5b21b6, #7c3aed);
  transform: translateY(-3px);
}
/* 🎯 تحسين مظهر رابط "حجز حصة مباشرة" */
.nav-link[href="../sign-up/book-session.html"] {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 400;             /* وزن أنيق ومتناسق */
  font-size: 0.93rem;
  color: #111111;               /* أسود مريح للعين */
  transition: color 0.25s ease-in-out, transform 0.2s ease-in-out;
}

/* 💫 تأثير عند المرور */
.nav-link[href="book-session.html"]:hover {
  color: #333333;               /* أسود فاتح قليلاً */
  transform: translateY(-1px);  /* حركة خفيفة للأعلى */
}
/* 🎯 تحسين مظهر رابط "حجز حصة مباشرة" */
.nav-link[href="book-session.html"] {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 400;             /* وزن أنيق ومتناسق */
  font-size: 0.93rem;
  color: #111111;               /* أسود مريح للعين */
  transition: color 0.25s ease-in-out, transform 0.2s ease-in-out;
}

/* 💫 تأثير عند المرور */
.nav-link[href="book-session.html"]:hover {
  color: #333333;               /* أسود فاتح قليلاً */
  transform: translateY(-1px);  /* حركة خفيفة للأعلى */
}
/* 🎯 تحسين مظهر رابط "شرح طريقة التسجيل" */
.nav-link[href="../how-to-register.html"] {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 400;             /* وزن أنيق ومتناسق */
  font-size: 0.93rem;
  color: #111111;               /* أسود مريح للعين */
  transition: color 0.25s ease-in-out, transform 0.2s ease-in-out;
}

/* 💫 تأثير عند المرور */
.nav-link[href="../how-to-register.html"]:hover {
  color: #333333;               /* أسود فاتح قليلاً */
  transform: translateY(-1px);  /* حركة خفيفة للأعلى */
}