/* ==========================================================================
   ملف التنسيقات الرئيسي - ندوة الطاقة النظيفة والتنمية المستدامة
   جامعة سرت - مركز أبحاث الطاقات الجديدة والمتجددة
   ========================================================================== */

:root {
  /* لوحة الألوان الرسمية المعتمدة */
  --primary-navy: #1c4478;       /* كحلي داكن ملكي */
  --primary-hover: #14335c;
  --secondary-blue: #2e6ebb;     /* أزرق أكاديمي متوسط */
  --accent-gold: #c68e39;        /* ذهبي شرفي مميز */
  --accent-gold-light: #e5b369;
  --accent-gold-soft: rgba(198, 142, 57, 0.12);
  --energy-green: #10b981;       /* أخضر طاقة نظيفة واستدامة */
  --energy-green-dark: #059669;
  --light-blue-bg: #e8f4ff;      /* أزرق فاتح مهدئ */
  --body-bg: #f8fbfe;
  --card-bg: #ffffff;
  --text-dark: #1b1b1b;
  --text-muted: #4b5563;
  --border-light: rgba(46, 110, 187, 0.15);
  --border-gold: rgba(198, 142, 57, 0.25);
  
  /* ظلال ناعمة احترافية */
  --shadow-sm: 0 2px 8px rgba(28, 68, 120, 0.06);
  --shadow-md: 0 8px 24px rgba(28, 68, 120, 0.08);
  --shadow-lg: 0 16px 36px rgba(28, 68, 120, 0.12);
  --shadow-gold: 0 8px 25px rgba(198, 142, 57, 0.25);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.04);
  
  /* الانتقالات وحواف العناصر */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Cairo', system-ui, -apple-system, sans-serif;
}

/* إعادة الضبط والأساسيات */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--body-bg);
  color: var(--text-dark);
  line-height: 1.8;
  direction: rtl;
  text-align: right;
  overflow-x: hidden;
}

/* حاوية المحتوى */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* شريط الإعلان العلوي السريع */
.top-notice-bar {
  background: linear-gradient(90deg, #132e52 0%, var(--primary-navy) 50%, #132e52 100%);
  color: #ffffff;
  padding: 0.5rem 0;
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(198, 142, 57, 0.3);
}
.top-notice-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.top-notice-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.top-notice-item i {
  color: var(--accent-gold);
}
.top-notice-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}
.top-notice-link {
  color: #e2e8f0;
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.top-notice-link:hover {
  color: var(--accent-gold-light);
}

/* شريط التنقل الرئيسي (Navbar) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(28, 68, 120, 0.08);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.navbar.scrolled {
  padding-top: 0.3rem;
  padding-bottom: 0.3rem;
  background: rgba(255, 255, 255, 0.98);
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
}

/* ترويسة الشعارات */
.brand-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}
.logo-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.logo-img {
  height: 54px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
  border-radius: 4px;
  transition: var(--transition);
}
.logo-img:hover {
  transform: scale(1.05);
}
.brand-divider {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, transparent, var(--accent-gold), transparent);
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.3;
}
.brand-subtitle {
  font-size: 0.8rem;
  color: var(--accent-gold);
  font-weight: 600;
}

/* روابط التنقل */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}
.nav-link {
  color: var(--primary-navy);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: 0.4rem 0.2rem;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--accent-gold), var(--secondary-blue));
  border-radius: var(--radius-full);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--secondary-blue);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* أزرار الإجراء السريع */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-navy) 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(46, 110, 187, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(46, 110, 187, 0.45);
  background: linear-gradient(135deg, #377dcf 0%, var(--primary-hover) 100%);
}
.btn-gold {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #a87225 100%);
  color: #ffffff;
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #d39b46 0%, var(--accent-gold) 100%);
  box-shadow: 0 10px 28px rgba(198, 142, 57, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--primary-navy);
  border: 1.5px solid var(--primary-navy);
}
.btn-outline:hover {
  background: var(--light-blue-bg);
  color: var(--secondary-blue);
  border-color: var(--secondary-blue);
}
.btn-outline-white {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
}
.btn-outline-white:hover {
  background: #ffffff;
  color: var(--primary-navy);
  border-color: #ffffff;
}

/* زر القائمة للشاشات الصغيرة */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--primary-navy);
  cursor: pointer;
  padding: 0.5rem;
}

/* طبقة التعتيم عند فتح القائمة المتنقلة */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 39, 74, 0.55);
  z-index: 1400;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  transition: opacity 0.3s ease;
}
.nav-overlay.active {
  display: block;
}

/* ==========================================================================
   قسم البطل (Hero Section)
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #0f274a 0%, #1c4478 50%, #1e5292 100%);
  color: #ffffff;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}
.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 15% 25%, rgba(198, 142, 57, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(46, 110, 187, 0.2) 0%, transparent 60%);
  pointer-events: none;
}
.hero-decorations {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.1;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(198, 142, 57, 0.4);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-gold-light);
  margin-bottom: 1.25rem;
  backdrop-filter: blur(8px);
}
.hero-badge-wrap i {
  color: var(--accent-gold);
}
.hero-title-main {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 1rem;
  text-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
}
.hero-title-main span {
  color: #60a5fa;
  background: linear-gradient(135deg, #93c5fd, #60a5fa, var(--accent-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-slogan {
  display: inline-block;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-gold-light);
  background: rgba(198, 142, 57, 0.15);
  border-right: 4px solid var(--accent-gold);
  padding: 0.5rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 1.5rem;
}
.hero-lead {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #e2e8f0;
  margin-bottom: 2rem;
  max-width: 600px;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* بطاقة العداد التنازلي المباشر (Countdown Card) */
.hero-countdown-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  text-align: center;
  position: relative;
}
.countdown-header {
  margin-bottom: 1.5rem;
}
.countdown-header h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.countdown-header h3 i {
  color: var(--accent-gold);
}
.countdown-header p {
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-top: 0.25rem;
}
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.countdown-box {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid rgba(198, 142, 57, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
}
.countdown-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--secondary-blue), var(--accent-gold));
}
.countdown-val {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
  font-feature-settings: "tnum";
  letter-spacing: -1px;
}
.countdown-label {
  font-size: 0.8rem;
  color: var(--accent-gold-light);
  font-weight: 600;
  margin-top: 0.4rem;
}
.countdown-footer-meta {
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
  padding-top: 1rem;
  display: flex;
  justify-content: space-around;
  font-size: 0.82rem;
  color: #cbd5e1;
}
.countdown-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.countdown-meta-item i {
  color: var(--energy-green);
}

/* شريط التميز السفلي لقسم البطل */
.hero-substrip {
  background: rgba(15, 39, 74, 0.95);
  border-top: 1px solid rgba(198, 142, 57, 0.3);
  padding: 1rem 0;
}
.substrip-items {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.substrip-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #ffffff;
}
.substrip-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: rgba(198, 142, 57, 0.2);
  color: var(--accent-gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.substrip-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
}
.substrip-text p {
  font-size: 0.8rem;
  color: #cbd5e1;
}

/* ==========================================================================
   عناوين الأقسام العامة (Section Headers)
   ========================================================================== */
.section {
  padding: 5rem 0;
  position: relative;
}
.section-alt {
  background-color: var(--light-blue-bg);
}
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem;
}
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}
.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.3;
  margin-bottom: 0.75rem;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-blue), var(--accent-gold));
  margin: 0.8rem auto 0;
  border-radius: var(--radius-full);
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   قسم المقدمة (Introduction Section) - Mobile-First
   ========================================================================== */
.intro-grid {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  width: 100%;
}
@media (min-width: 992px) {
  .intro-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    align-items: start;
  }
}

.intro-text-box {
  background: var(--card-bg);
  padding: 1.5rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}
@media (min-width: 768px) {
  .intro-text-box {
    padding: 2.25rem;
  }
}
@media (min-width: 992px) {
  .intro-text-box {
    padding: 2.5rem;
  }
}

.intro-text-box::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary-navy), var(--accent-gold));
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.intro-paragraph {
  font-size: 0.98rem;
  line-height: 1.85;
  color: #334155;
  margin-bottom: 1.25rem;
  text-align: right;
  overflow-wrap: break-word;
  word-break: break-word;
}
@media (min-width: 768px) {
  .intro-paragraph {
    font-size: 1.02rem;
    line-height: 1.9;
  }
}
.intro-paragraph:last-child {
  margin-bottom: 0;
}

.intro-highlight {
  background: rgba(46, 110, 187, 0.05);
  border-right: 3px solid var(--secondary-blue);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  margin: 1.25rem 0;
  font-weight: 600;
  color: var(--primary-navy);
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: 1.8;
  font-size: 0.95rem;
}
@media (min-width: 768px) {
  .intro-highlight {
    padding: 1rem 1.25rem;
    font-size: 1rem;
  }
}

/* بطاقات الميزات الجانبية للمقدمة */
.intro-features-column {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  width: 100%;
}
@media (min-width: 600px) and (max-width: 991px) {
  .intro-features-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .intro-features-column > .intro-solar-card {
    grid-column: 1 / -1;
  }
}

.intro-feature-card {
  background: var(--card-bg);
  padding: 1.15rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: var(--transition);
  width: 100%;
  box-sizing: border-box;
}
@media (min-width: 768px) {
  .intro-feature-card {
    padding: 1.35rem;
    gap: 1.25rem;
  }
}
.intro-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-blue);
}

.intro-feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--light-blue-bg) 0%, #d4eafc 100%);
  color: var(--secondary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
@media (min-width: 768px) {
  .intro-feature-icon {
    width: 50px;
    height: 50px;
    font-size: 1.35rem;
  }
}
.intro-feature-card:nth-child(2) .intro-feature-icon {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
}
.intro-feature-card:nth-child(3) .intro-feature-icon {
  background: rgba(16, 185, 129, 0.12);
  color: var(--energy-green);
}

.intro-feature-info h4 {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.35rem;
}
@media (min-width: 768px) {
  .intro-feature-info h4 {
    font-size: 1.05rem;
  }
}
.intro-feature-info p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
}
@media (min-width: 768px) {
  .intro-feature-info p {
    font-size: 0.88rem;
  }
}

/* بطاقة الصورة المصاحبة لقسم المقدمة */
.intro-solar-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}
.intro-solar-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
@media (min-width: 768px) {
  .intro-solar-img {
    height: 200px;
  }
}
.intro-solar-card:hover .intro-solar-img {
  transform: scale(1.05);
}
.intro-solar-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(15, 39, 74, 0.92) 0%, transparent 100%);
  padding: 0.65rem 1rem;
  color: #ffffff;
}
.intro-solar-caption span {
  font-size: 0.82rem;
  color: var(--accent-gold-light);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* ==========================================================================
   قسم محاور الندوة الخمسة (Symposium Tracks)
   ========================================================================== */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.track-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  padding: 2.2rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.track-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(46, 110, 187, 0.4);
}
.track-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-navy), var(--secondary-blue));
}
.track-card.featured::before {
  background: linear-gradient(90deg, var(--accent-gold), #f59e0b);
}
.track-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}
.track-number {
  font-size: 0.85rem;
  font-weight: 800;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  background: var(--light-blue-bg);
  color: var(--secondary-blue);
  border: 1px solid rgba(46, 110, 187, 0.2);
}
.track-icon-wrap {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-navy) 0%, var(--secondary-blue) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 6px 16px rgba(28, 68, 120, 0.25);
}
.track-card.t-gold .track-icon-wrap {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #9a6519 100%);
  box-shadow: var(--shadow-gold);
}
.track-card.t-green .track-icon-wrap {
  background: linear-gradient(135deg, var(--energy-green) 0%, var(--energy-green-dark) 100%);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}
.track-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 1.25rem;
  line-height: 1.4;
  min-height: 3.2rem;
}
.track-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.track-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.92rem;
  color: #475569;
  line-height: 1.6;
}
.track-list-item i {
  color: var(--accent-gold);
  font-size: 0.85rem;
  margin-top: 0.35rem;
  flex-shrink: 0;
}

/* ==========================================================================
   قسم أهداف الندوة (Objectives Section)
   ========================================================================== */
.objectives-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}
.objective-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.5rem;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.objective-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-gold);
}
.obj-number-badge {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--light-blue-bg);
  color: var(--secondary-blue);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 1px solid rgba(46, 110, 187, 0.2);
}
.obj-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #f0f7ff 0%, #e1effe 100%);
  color: var(--secondary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 1.25rem;
  transition: var(--transition);
}
.objective-card:hover .obj-icon {
  background: var(--accent-gold);
  color: #ffffff;
  transform: rotate(5deg) scale(1.05);
}
.obj-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.obj-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   قسم مركز أبحاث الطاقات الجديدة والمتجددة (Center Section)
   ========================================================================== */
.center-overview-box {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.75rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  margin-bottom: 2.5rem;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2.5rem;
  align-items: center;
}
.center-info-content h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 1rem;
}
.center-info-content p {
  font-size: 1rem;
  line-height: 1.85;
  color: #334155;
  margin-bottom: 1rem;
}
.center-info-content p:last-child {
  margin-bottom: 0;
}
.center-logo-showcase {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, #f8fbfe 0%, #edf5fc 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  text-align: center;
}
.center-showcase-img {
  max-width: 170px;
  height: auto;
  object-fit: contain;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.08));
}
.center-showcase-tag {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-navy);
}

/* أعمدة الرؤية والرسالة والأهداف */
.center-pillars-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 1.75rem;
}
.pillar-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.pillar-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-blue);
}
.pillar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--light-blue-bg);
  color: var(--secondary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.pillar-card.gold .pillar-icon {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
}
.pillar-card.green .pillar-icon {
  background: rgba(16, 185, 129, 0.12);
  color: var(--energy-green);
}
.pillar-header h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-navy);
}
.pillar-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-muted);
}
.center-goals-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.center-goals-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: #334155;
  font-weight: 600;
}
.center-goals-list li i {
  color: var(--energy-green);
  font-size: 0.9rem;
}

/* ==========================================================================
   قسم الموعد والمكان (Date & Venue Section)
   ========================================================================== */
.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: stretch;
}
.venue-details-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.75rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.venue-title-row {
  margin-bottom: 2rem;
}
.venue-title-row h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.5rem;
}
.venue-items-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.25rem;
}
.venue-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}
.venue-item-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--light-blue-bg);
  color: var(--secondary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}
.venue-item:nth-child(2) .venue-item-icon {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
}
.venue-item-content h4 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.25rem;
}
.venue-item-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
}
.venue-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* بطاقة المحاكاة البصرية لموقع جامعة سرت ومدرج الإعمار */
.venue-map-card {
  background: linear-gradient(135deg, var(--primary-navy) 0%, #153258 100%);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  color: #ffffff;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.venue-map-card::before {
  content: '';
  position: absolute;
  top: -50px;
  left: -50px;
  width: 200px;
  height: 200px;
  background: rgba(198, 142, 57, 0.15);
  border-radius: var(--radius-full);
  filter: blur(40px);
}
.map-badge-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--accent-gold-light);
  margin-bottom: 1.5rem;
  border: 1px solid rgba(198, 142, 57, 0.3);
}
.map-visual-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  margin: 1.5rem 0;
}
.map-visual-icon {
  font-size: 2.75rem;
  color: var(--accent-gold-light);
  margin-bottom: 1rem;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.map-visual-box h4 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.map-visual-box p {
  font-size: 0.9rem;
  color: #cbd5e1;
}

/* ==========================================================================
   قسم التواصل ونموذج المشاركة (Contact & Registration Section)
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
}
.contact-info-panel {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.contact-info-top h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.75rem;
}
.contact-info-top p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}
.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.contact-channel-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--light-blue-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--primary-navy);
  border: 1px solid rgba(46, 110, 187, 0.15);
  transition: var(--transition);
}
.contact-channel-item:hover {
  background: #dbeafe;
  transform: translateX(-4px);
  border-color: var(--secondary-blue);
}
.contact-channel-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--secondary-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.contact-channel-item:nth-child(2) .contact-channel-icon {
  background: var(--accent-gold);
}
.contact-channel-texts h5 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}
.contact-channel-texts span {
  font-size: 1rem;
  font-weight: 700;
  direction: ltr;
  display: inline-block;
}

/* نموذج إرسال المشاركة والاستفسار */
.contact-form-panel {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}
.form-panel-header {
  margin-bottom: 1.75rem;
}
.form-panel-header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.4rem;
}
.form-panel-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group-full {
  grid-column: span 2;
}
.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 0.4rem;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1.5px solid #d1d5db;
  border-radius: var(--radius-sm);
  background-color: #f9fafb;
  color: var(--text-dark);
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--secondary-blue);
  background-color: #ffffff;
  box-shadow: 0 0 0 4px rgba(46, 110, 187, 0.15);
}
.form-textarea {
  resize: vertical;
  min-height: 100px;
}
.form-status-msg {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-top: 1rem;
  display: none;
}
.form-status-msg.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--energy-green-dark);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   تذييل الصفحة وشعار الختام (Footer & Motto Banner)
   ========================================================================== */
.motto-banner {
  background: linear-gradient(90deg, #132e52 0%, var(--primary-navy) 50%, #132e52 100%);
  color: #ffffff;
  padding: 1.75rem 0;
  text-align: center;
  border-top: 1px solid rgba(198, 142, 57, 0.3);
  border-bottom: 1px solid rgba(198, 142, 57, 0.3);
}
.motto-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--accent-gold-light);
}
.motto-content i {
  color: var(--energy-green);
}
.motto-leaf {
  animation: leafFloat 3s ease-in-out infinite alternate;
}
@keyframes leafFloat {
  0% { transform: rotate(-5deg); }
  100% { transform: rotate(10deg); }
}

.site-footer {
  background: #0d1e36;
  color: #cbd5e1;
  padding: 4rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
}
.footer-logos {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.footer-logo-img {
  height: 52px;
  background: #ffffff;
  padding: 3px;
  border-radius: var(--radius-sm);
}
.footer-desc {
  font-size: 0.92rem;
  line-height: 1.75;
  color: #94a3b8;
  margin-bottom: 1.25rem;
}
.footer-links-col h4 {
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}
.footer-links-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 35px;
  height: 2px;
  background: var(--accent-gold);
}
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-link {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-link:hover {
  color: var(--accent-gold-light);
  transform: translateX(-4px);
}
.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: #64748b;
}
.footer-bottom-bar a {
  color: var(--accent-gold-light);
  text-decoration: none;
}

/* زر الصعود للأعلى (Back to Top) */
.back-to-top {
  position: fixed;
  bottom: 25px;
  left: 25px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--secondary-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary-navy);
  transform: translateY(-4px);
}



/* ==========================================================================
   قسم محاكاة وتطبيقات الطاقة الشمسية (Solar Energy Showcase)
   ========================================================================== */
.solar-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.solar-photo-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.solar-photo-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--secondary-blue);
}
.solar-photo-wrapper {
  position: relative;
  width: 100%;
  height: 230px;
  overflow: hidden;
}
.solar-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.solar-photo-card:hover .solar-photo-img {
  transform: scale(1.08);
}
.solar-photo-badge {
  position: absolute;
  bottom: 15px;
  right: 15px;
  background: rgba(15, 39, 74, 0.85);
  color: var(--accent-gold-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(198, 142, 57, 0.3);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.solar-photo-body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.solar-photo-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.solar-photo-body p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex: 1;
}
.solar-photo-meta {
  border-top: 1px solid #f1f5f9;
  padding-top: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--secondary-blue);
  font-weight: 700;
}

/* ==========================================================================
   قسم الرعاة الرسميين والشركاء (Official Sponsors)
   ========================================================================== */
.sponsors-section {
  background: linear-gradient(180deg, #f0f7ff 0%, #e2effd 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
}
.sponsor-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.25rem;
  box-shadow: var(--shadow-md);
  border: 1.5px solid rgba(46, 110, 187, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.sponsor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--secondary-blue), var(--accent-gold));
}
.sponsor-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-gold);
}
.sponsor-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}
.sponsor-badge.strategic {
  background: rgba(16, 185, 129, 0.12);
  color: var(--energy-green-dark);
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.sponsor-badge.gov {
  background: var(--accent-gold-soft);
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
}
.sponsor-logo-box {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-full);
  background: #f8fbfe;
  border: 2px dashed rgba(46, 110, 187, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-inner);
  transition: var(--transition);
}
.sponsor-card:hover .sponsor-logo-box {
  border-color: var(--accent-gold);
  transform: scale(1.05);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}
.sponsor-logo-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.sponsor-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 0.4rem;
}
.sponsor-subtitle {
  font-size: 0.92rem;
  color: var(--accent-gold);
  font-weight: 700;
  margin-bottom: 1rem;
}
.sponsor-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.sponsor-highlight-box {
  margin-top: 1.5rem;
  padding: 0.75rem 1.25rem;
  background: #f8fbfe;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-navy);
  border: 1px solid rgba(46, 110, 187, 0.1);
  width: 100%;
}

/* ==========================================================================
   التصميم المتجاوب والشاشات المختلفة (Media Queries)
   ========================================================================== */

/* ─── حماية عامة من التمرير الأفقي لجميع الأجهزة ─── */
html, body {
  overflow-x: hidden;
  max-width: 100%;
  position: relative;
}

/* ─── شاشات الحاسوب المتوسطة (Tablet landscape / small desktop) ─── */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero-countdown-wrap {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }
  .tracks-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .objectives-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .center-overview-box {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .center-logo-showcase {
    max-width: 320px;
    margin: 0 auto;
  }
  .center-pillars-grid {
    grid-template-columns: 1fr 1fr;
  }
  .venue-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .solar-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .section {
    padding: 4rem 0;
  }
}

/* ─── الهواتف والأجهزة اللوحية الصغيرة (Tablet portrait / large phone) ─── */
@media (max-width: 768px) {
  /* شريط الإعلان العلوي */
  .top-notice-bar {
    display: none;
  }

  /* شريط التنقل */
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--light-blue-bg);
  }
  .nav-container {
    padding: 0.65rem 1rem;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(310px, 85vw);
    height: 100dvh;
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 1.5rem 2rem;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
    transition: 0.35s ease-in-out;
    border-left: 1px solid var(--border-light);
    overflow-y: auto;
    z-index: 1500;
    gap: 0.25rem;
  }
  .nav-links.active {
    right: 0;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-link {
    display: block;
    width: 100%;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }
  .nav-link:hover,
  .nav-link.active {
    background: var(--light-blue-bg);
  }
  .nav-links .btn {
    width: 100%;
    justify-content: center;
    margin-top: 0.5rem;
  }

  /* الشعار */
  .brand-text {
    display: none;
  }
  .logo-img {
    height: 44px;
  }

  /* قسم البطل */
  .hero-section {
    padding: 3rem 0 2.5rem;
  }
  .hero-title-main {
    font-size: 1.75rem;
    line-height: 1.3;
  }
  .hero-slogan {
    font-size: 1rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }
  .hero-lead {
    font-size: 0.97rem;
  }
  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .hero-countdown-wrap {
    max-width: 100%;
  }
  .countdown-grid {
    gap: 0.5rem;
  }
  .countdown-val {
    font-size: 1.6rem;
  }
  .countdown-label {
    font-size: 0.75rem;
  }
  .hero-countdown-card {
    padding: 1.5rem 1.25rem;
  }
  .substrip-items {
    gap: 1rem;
    justify-content: flex-start;
  }
  .substrip-item {
    gap: 0.5rem;
  }
  .substrip-icon {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }

  /* عناوين الأقسام */
  .section {
    padding: 3.5rem 0;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .section-header {
    margin-bottom: 2.5rem;
  }

  /* محاور الندوة */
  .tracks-grid {
    grid-template-columns: 1fr;
  }
  .track-card {
    padding: 1.75rem 1.5rem;
  }
  .track-title {
    min-height: unset;
  }

  /* الأهداف */
  .objectives-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
  .objective-card {
    padding: 1.75rem 1.25rem;
  }

  /* معرض الطاقة الشمسية */
  .solar-gallery-grid {
    grid-template-columns: 1fr;
  }

  /* الرعاة */
  .sponsors-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* المركز */
  .center-overview-box {
    padding: 1.75rem;
    gap: 1.5rem;
  }
  .center-pillars-grid {
    grid-template-columns: 1fr;
  }

  /* الموعد والمكان */
  .venue-details-card {
    padding: 1.75rem;
  }
  .venue-actions {
    flex-direction: column;
  }
  .venue-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* التواصل */
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .contact-info-panel,
  .contact-form-panel {
    padding: 1.75rem;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group-full {
    grid-column: span 1;
  }

  /* التذييل */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .motto-content {
    font-size: 1.1rem;
    flex-wrap: wrap;
    text-align: center;
    gap: 0.5rem;
  }

  /* زر الصعود */
  .back-to-top {
    bottom: 16px;
    left: 16px;
    width: 44px;
    height: 44px;
  }
}

/* ─── الهواتف الصغيرة جداً (Small phones ≤ 480px) ─── */
@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  /* شريط التنقل */
  .logo-img {
    height: 38px;
  }
  .brand-divider {
    display: none;
  }

  /* قسم البطل */
  .hero-section {
    padding: 2.5rem 0 2rem;
  }
  .hero-title-main {
    font-size: 1.5rem;
  }
  .hero-slogan {
    font-size: 0.93rem;
    padding: 0.4rem 1rem;
  }
  .hero-badge-wrap {
    font-size: 0.82rem;
    padding: 0.35rem 0.85rem;
  }
  .hero-lead {
    font-size: 0.93rem;
  }
  .countdown-val {
    font-size: 1.4rem;
    letter-spacing: -0.5px;
  }
  .countdown-box {
    padding: 0.75rem 0.35rem;
  }
  .countdown-label {
    font-size: 0.7rem;
  }
  .countdown-footer-meta {
    font-size: 0.78rem;
    flex-direction: column;
    gap: 0.4rem;
  }
  .substrip-items {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  /* الأقسام */
  .section {
    padding: 2.75rem 0;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .section-subtitle {
    font-size: 0.95rem;
  }
  .section-header {
    margin-bottom: 2rem;
  }

  /* المحاور */
  .track-card {
    padding: 1.5rem 1.25rem;
  }

  /* الأهداف */
  .objectives-grid {
    grid-template-columns: 1fr;
  }
  .objective-card {
    padding: 1.5rem 1rem;
  }

  /* المركز */
  .center-overview-box {
    padding: 1.35rem;
  }
  .pillar-card {
    padding: 1.5rem 1.25rem;
  }

  /* الموعد */
  .venue-details-card {
    padding: 1.35rem;
  }
  .venue-map-card {
    padding: 1.5rem 1.25rem;
  }

  /* التواصل */
  .contact-info-panel,
  .contact-form-panel {
    padding: 1.35rem;
  }

  /* الرعاة */
  .sponsor-card {
    padding: 2rem 1.5rem;
  }
  .sponsor-logo-box {
    width: 120px;
    height: 120px;
  }

  /* التذييل */
  .site-footer {
    padding: 3rem 0 1.25rem;
  }
  .motto-content {
    font-size: 1rem;
  }
}