:root {
  /* Color Palette (Deep slate & rich indigo background, glowing gold accents) */
  --color-bg-start: hsl(222, 47%, 12%); /* Deep professional navy */
  --color-bg-end: hsl(224, 45%, 8%); /* Midnight-blue/slate */
  
  --color-surface-translucent: hsla(222, 47%, 16%, 0.45); /* Tinted transparent surface for cards */
  --color-surface-hover: hsla(222, 47%, 22%, 0.65);
  --color-surface-solid: hsl(222, 47%, 14%);
  
  --color-accent: hsl(30, 95%, 53%); /* Luxurious amber orange */
  --color-accent-hover: hsl(28, 95%, 46%);
  --color-accent-rgb: 255, 137, 26; /* RGB version for overlays/shadows */
  
  --color-text-primary: hsl(210, 20%, 96%); /* Off-white */
  --color-text-secondary: hsl(196, 75%, 75%); /* Glowing soft cyan-blue */
  --color-text-muted: hsl(210, 10%, 52%);
  
  --color-border: hsla(196, 75%, 80%, 0.12); /* Subtle divider border with light blue hint */
  --color-border-glow: hsla(30, 95%, 53%, 0.25); /* Accent-border glow */
  
  /* Typography */
  --font-family-headings: 'Outfit', sans-serif;
  --font-family-body: 'Inter', sans-serif;
  
  /* Easing curves from emil-design-eng & impeccable */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --transition-speed: 240ms;
}

html {
  overflow-y: scroll; /* Force consistent scroll behavior */
  -ms-overflow-style: none;  /* IE and Edge */
  scrollbar-width: none;  /* Firefox */
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none; /* Chrome, Safari and Opera */
}

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

body {
  font-family: var(--font-family-body);
  background-color: var(--color-bg-end);
  background-image: 
    radial-gradient(at 0% 0%, hsla(196, 80%, 20%, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 0%, hsla(30, 80%, 20%, 0.12) 0px, transparent 50%),
    linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
  color: var(--color-text-primary);
  min-height: 100vh;
  min-height: calc(var(--vh, 1vh) * 100);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Blueprint grids */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(14, 165, 233, 0.02) 1.5px, transparent 1.5px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.02) 1.5px, transparent 1.5px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(14, 165, 233, 0.006) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 165, 233, 0.006) 1px, transparent 1px);
  background-size: 10px 10px;
  pointer-events: none;
  z-index: -1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.nav-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  animation: slideDown 0.8s var(--ease-out);
}

.nav-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 8px 16px;
  border-radius: 24px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--color-border);
  border: none;
}

.nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: none;
  border-radius: 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: transform var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out), color var(--transition-speed) var(--ease-out);
  opacity: 0.7;
}

.nav-button:hover {
  transform: translateY(-2px) scale(1.05);
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
  opacity: 1;
}

.nav-button:active {
  transform: scale(0.95);
}

.nav-button.active {
  background: var(--color-accent);
  color: var(--color-bg-start) !important;
  transform: scale(1.1);
  opacity: 1;
  box-shadow: 0 8px 20px rgba(255, 171, 25, 0.35);
}

/* Page Container */
.page {
  display: none;
  min-height: 100vh;
  min-height: calc(var(--vh, 1vh) * 100);
  padding-top: 120px;
}

.page.active {
  display: block;
  animation: pageEntrance 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.page.exit {
  display: block !important;
  animation: pageExit 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
  pointer-events: none;
}

/* Home Page Styles */
.section {
  margin-bottom: 80px;
  opacity: 0;
  transform: translateY(40px);
  transition: transform 0.6s var(--ease-out), opacity 0.6s var(--ease-out);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-section {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 28px;
  padding: 60px;
  text-align: center;
  margin-bottom: 80px;
  border: 1px solid var(--color-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}

.profile-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.profile-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--color-accent), var(--color-bg-start));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.profile-text {
  flex: 1;
  max-width: 600px;
  text-align: left;
}

.profile-text h1 {
  font-family: var(--font-family-headings);
  font-weight: 800;
  color: var(--color-text-primary);
  font-size: clamp(2.2rem, 4vw + 1rem, 3.5rem);
  margin-bottom: 15px;
}

@media (min-width: 769px) {
  .profile-text {
    max-width: 850px;
  }
  .profile-text h1 {
    white-space: nowrap;
  }
}

.profile-text h2 {
  font-family: var(--font-family-headings);
  font-weight: 600;
  color: var(--color-accent);
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.profile-text p {
  font-family: var(--font-family-body);
  color: var(--color-text-secondary);
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 65ch;
  margin-bottom: 20px;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out), box-shadow var(--transition-speed) var(--ease-out);
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 12px var(--color-border-glow);
}

.service-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 24px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--color-accent);
  transition: color var(--transition-speed) var(--ease-out), transform var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out);
}

.service-card:hover .service-icon {
  color: var(--color-bg-start);
  transform: scale(1.1) rotate(2deg);
  background: var(--color-accent);
}

.service-card h3 {
  font-family: var(--font-family-headings);
  color: var(--color-text-primary);
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.service-card p {
  color: var(--color-text-secondary);
  line-height: 1.6;
  font-size: 1.05rem;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.contact-card {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out);
  cursor: pointer;
}

.contact-card h3 {
  font-family: var(--font-family-headings);
  color: var(--color-text-primary);
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.contact-card p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-top: 5px;
  font-weight: 400;
}

.contact-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.section-title {
  font-family: var(--font-family-headings);
  color: var(--color-text-primary);
  font-size: 2.6rem;
  text-align: center;
  margin-bottom: 60px;
  font-weight: 700;
  letter-spacing: -0.01em;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  margin: 15px auto 0;
  border-radius: 2px;
}

/* Projects Page */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.project-card {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), box-shadow var(--transition-speed) var(--ease-out);
}

.project-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--color-accent);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 12px var(--color-border-glow);
}

.project-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10.5; /* Responsive aspect ratio to prevent cropping of architectural details */
  background: linear-gradient(90deg, 
    var(--color-surface-solid) 25%, 
    hsla(220, 25%, 22%, 0.4) 37%, 
    var(--color-surface-solid) 63%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.project-image.loaded-container {
  animation: none;
  background: var(--color-surface-solid);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0; /* Starts hidden, fades in on complete */
  transition: opacity 0.5s ease-in-out, transform var(--transition-speed) var(--ease-out);
}

.project-image img.loaded {
  opacity: 1;
}

.project-card:hover .project-image img {
  transform: scale(1.04);
}

.project-content {
  padding: 24px;
}

.project-status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.status-completed {
  background: rgba(76, 175, 80, 0.15);
  color: #81c784;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.status-progress {
  background: rgba(255, 193, 7, 0.15);
  color: #ffd54f;
  border: 1px solid rgba(255, 193, 7, 0.3);
}

.status-construction {
  background: rgba(244, 67, 54, 0.15);
  color: #e57373;
  border: 1px solid rgba(244, 67, 54, 0.3);
}

/* Certificates Page */
.certificate-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.certificate-card {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 24px;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), box-shadow var(--transition-speed) var(--ease-out);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.certificate-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.05),
    transparent
  );
  transition: left 0.6s var(--ease-out);
}

.certificate-card:hover::before {
  left: 100%;
}

.certificate-card:hover {
  transform: translateY(-10px) scale(1.02);
  border-color: var(--color-accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 12px var(--color-border-glow);
}

/* صورة الشهادة */
.certificate-image {
  width: 100%;
  height: 450px;
  overflow: hidden;
  border-radius: 16px;
  margin-bottom: 20px;
  position: relative;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
}

.certificate-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.8s var(--ease-in-out);
}
.certificate-image img.active {
  opacity: 1;
}

.certificate-image_1 {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: 16px;
  margin-bottom: 20px;
  position: relative;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
}

.certificate-image_1 img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.8s var(--ease-in-out);
}

.certificate-image_1 img.active {
  opacity: 1;
}

.certificate-image img:only-child,
.certificate-image_1 img:only-child {
  opacity: 1;
}

/* التعريف */
.certificate-info h3 {
  font-family: var(--font-family-headings);
  color: var(--color-text-primary);
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.certificate-info p {
  color: var(--color-accent);
  font-size: 0.95rem;
  margin-bottom: 15px;
  font-weight: 500;
}

/* التفاصيل */
.certificate-details {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 1rem;
}

/* البادجات */
.certificate-badge {
  display: inline-block;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
  margin: 5px;
  transition: background var(--transition-speed) var(--ease-out), color var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out);
}

.certificate-card:hover .certificate-badge {
  background: var(--color-accent);
  color: var(--color-bg-start);
  border-color: var(--color-accent);
}

/* Skills Section */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.skill-category {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 30px;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out), box-shadow var(--transition-speed) var(--ease-out);
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.skill-category h3 {
  font-family: var(--font-family-headings);
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
  font-weight: 600;
}

.skill-bar {
  margin-bottom: 20px;
}

.skill-name {
  color: var(--color-text-secondary);
  font-family: var(--font-family-body);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
}

.skill-progress {
  height: 8px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, hsl(30, 95%, 50%), var(--color-accent));
  border-radius: 10px;
  transition: width 1.8s cubic-bezier(0.16, 1, 0.3, 1);
  width: 0;
}

.skill-fill.animated,
.section.visible .skill-fill {
  width: var(--skill-width);
}

.feature-card {
  background: var(--color-surface-translucent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 30px;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-speed) var(--ease-out), border-color var(--transition-speed) var(--ease-out), background var(--transition-speed) var(--ease-out), box-shadow var(--transition-speed) var(--ease-out);
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 12px var(--color-border-glow);
}

/* Animations */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translate(-50%, -40px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pageEntrance {
  0% {
    opacity: 0;
    transform: translateY(12px) scale(0.99);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes pageExit {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-12px) scale(0.99);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section {
    padding: 40px 30px;
  }

  .profile-container {
    flex-direction: column;
    text-align: center;
  }

  .profile-text {
    text-align: center;
  }

  .profile-text h1 {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .nav-bar {
    padding: 6px;
  }

  .nav-button {
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero-section {
    padding: 30px 20px;
  }

  .profile-text h1 {
    font-size: 2rem;
  }

  .profile-text p {
    font-size: 1.1rem;
  }
}

/* Scroll Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background: var(--color-accent);
  z-index: 1001;
  transition: width 0.1s var(--ease-out);
}

/* يجعل اللودر في منتصف الشاشة */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
  z-index: 9998;
}

/* الحاوية الداخلية للحروف */
.loader {
  display: flex;
  gap: clamp(0.3em, 1vw, 0.8em);
}

/* أيقونات الحروف (Responsive) */
.loader-icon {
  width: clamp(40px, 10vw, 64px);
  height: auto;
}

.inline-block {
  display: inline-block;
}

/* حركة الخط */
.dash {
  animation: dashArray 2s ease-in-out infinite, dashOffset 2s linear infinite;
}
@keyframes dashArray {
  0% {
    stroke-dasharray: 0 1 359 0;
  }
  50% {
    stroke-dasharray: 0 359 1 0;
  }
  100% {
    stroke-dasharray: 359 1 0 0;
  }
}
@keyframes dashOffset {
  0% {
    stroke-dashoffset: 365;
  }
  100% {
    stroke-dashoffset: 5;
  }
}

/* للهواتف - شاشة أصغر من 768px */
@media (max-width: 768px) {
  .loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #introLogo {
    position: static; /* ما يحتاج fixed على الهاتف */
    transform: none; /* نشيل translate اللي يخرب التمركز */
    width: 60vw; /* حجم مناسب للشاشات الصغيرة */
    max-width: 200px; /* حد أقصى */
    height: auto;
  }
}

/* تكيف أكثر على الشاشات الصغيرة */
@media (max-width: 480px) {
  .loader-icon {
    width: clamp(36px, 12vw, 50px);
  }
}

@keyframes text_713 {
  0% {
    letter-spacing: 1px;
    transform: translateX(0px);
  }
  40% {
    letter-spacing: 2px;
    transform: translateX(26px);
  }
  80% {
    letter-spacing: 1px;
    transform: translateX(32px);
  }
  90% {
    letter-spacing: 2px;
    transform: translateX(0px);
  }
  100% {
    letter-spacing: 1px;
    transform: translateX(0px);
  }
}

@keyframes loading_713 {
  0% {
    width: 16px;
    transform: translateX(0px);
  }
  40% {
    width: 100%;
    transform: translateX(0px);
  }
  80% {
    width: 16px;
    transform: translateX(64px);
  }
  90% {
    width: 100%;
    transform: translateX(0px);
  }
  100% {
    width: 16px;
    transform: translateX(0px);
  }
}

@keyframes loading2_713 {
  0% {
    transform: translateX(0px);
    width: 16px;
  }
  40% {
    transform: translateX(0%);
    width: 80%;
  }
  80% {
    width: 100%;
    transform: translateX(0px);
  }
  90% {
    width: 80%;
    transform: translateX(15px);
  }
  100% {
    transform: translateX(0px);
    width: 16px;
  }
}
footer {
  font-family: var(--font-family-body);
  background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
  position: relative;
  color: var(--color-text-secondary);
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer-content .social-links {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.footer-content .social-links a {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* --- Loading overlay (يغطي الصفحة بالكامل، نفس تدرج الخلفية) --- */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--color-bg-start) 0%,
    var(--color-bg-end) 100%
  ); /* نفس خلفية الصفحة */
  z-index: 9998;
  will-change: transform, opacity;
  overflow: hidden;
}

/* loader (استخدمت نفس عناصر الـ loader الموجود) */
.loader {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 9999;
}

/* إخفاء سلس للـ loader */
.loader.hide {
  opacity: 0;
  transform: translateY(-10px);
  transition: all 320ms var(--ease-out);
}

/* شعار الانطلاقة (متمركز، مناسب لجميع الشاشات) */
#introLogo {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(1);
  width: clamp(140px, 30vw, 260px); /* responsive */
  max-height: 40vh;
  z-index: 10000; /* أعلى من الـ overlay حتى يظهر فوقها أثناء الحركة */
  pointer-events: none;
  opacity: 0;
  transition: opacity 260ms linear;
  will-change: transform, opacity;
}

/* نسخة الشعار الصغيرة في الـ navbar (الهدف النهائي) */
.nav-logo {
  position: absolute;
  left: -58px; /* على يسار شريط التنقل */
  top: 50%;
  transform: translateY(-50%);
  width: clamp(28px, 6vw, 40px);
  height: auto;
  opacity: 0; /* تظهر بعد الانتهاء */
  transition: opacity 260ms var(--ease-out), transform 260ms var(--ease-out);
}

/* responsive tweaks */
@media (max-width: 768px) {
  .nav-logo {
    left: -48px;
  }
}

@media (max-width: 480px) {
  #introLogo {
    width: clamp(120px, 40vw, 200px);
  }
  .nav-logo {
    width: 28px;
    left: -35px; /* تقليل المسافة على الشاشات الصغيرة */
  }
}

.nav-button.active svg {
  fill: var(--color-bg-start); /* لون SVG ليتكامل مع زر الأكتيف الذهبي */
}

.projects-slider-container {
  position: relative;
  margin: 40px auto 120px auto; /* Centered, 120px bottom margin for plenty of footer spacing */
  width: 100%;
  max-width: 1000px;
  height: 480px; /* Reduced from 600px to be more compact */
  background: var(--color-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  border-radius: 24px;
}

.prev,
.next {
  z-index: 20;
}

.projects-slider-container .slide .item {
  width: 150px; /* Smaller card items */
  height: 230px;
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  border-radius: 18px;
  background-position: center;
  background-size: cover;
  transition: 0.45s cubic-bezier(0.25, 1, 0.5, 1);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
  display: flex;
}

.slide .item:nth-child(1),
.slide .item:nth-child(2) {
  top: 0;
  left: 0;
  transform: translate(0, 0);
  border-radius: 0;
  width: 100%;
  height: 100%;
  box-shadow: none;
}

.slide .item:nth-child(3) {
  left: 55%;
}
.slide .item:nth-child(4) {
  left: calc(55% + 170px);
}
.slide .item:nth-child(5) {
  left: calc(55% + 340px);
}
.slide .item:nth-child(n + 6) {
  left: calc(55% + 510px);
  opacity: 0;
}

/* 📱 تابلت */
@media (max-width: 768px) {
  .slide .item:nth-child(3),
  .slide .item:nth-child(4),
  .slide .item:nth-child(5) {
    width: 38%;
    height: 50%;
  }
  .slide .item:nth-child(3) {
    left: 60%;
  }
  .slide .item:nth-child(4) {
    left: 80%;
  }
  .slide .item:nth-child(5) {
    left: 100%;
  }
}

@media (max-width: 480px) {
  .slide .item:nth-child(3),
  .slide .item:nth-child(4),
  .slide .item:nth-child(5) {
    width: 42%;
    height: 45%;
  }
  .slide .item:nth-child(3) {
    left: 65%;
  }
  .slide .item:nth-child(4) {
    left: 85%;
  }
  .slide .item:nth-child(5) {
    left: 105%;
  }
}

.slide .item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Frosted glass content overlay card (Arabic layout) */
.item .content {
  position: absolute;
  bottom: 40px;
  left: 40px;
  width: calc(100% - 80px);
  max-width: 480px;
  color: #fff;
  background: rgba(10, 12, 18, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 24px 30px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  text-align: right;
  direction: rtl;
  display: none;
  z-index: 10;
}

.slide .item:nth-child(2) .content {
  display: block;
  animation: slideInDefault 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.projects-slider-container.direction-next .slide .item:nth-child(2) .content {
  animation: slideInFromRight 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.projects-slider-container.direction-prev .slide .item:nth-child(2) .content {
  animation: slideInFromLeft 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.content .name {
  font-family: var(--font-family-headings);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  line-height: 1.3;
}

.content .des {
  font-family: var(--font-family-body);
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

@keyframes slideInDefault {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInFromRight {
  0% {
    opacity: 0;
    transform: translateX(45px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromLeft {
  0% {
    opacity: 0;
    transform: translateX(-45px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide Next/Prev Buttons */
.slider-buttons {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 30;
}

.button {
  display: flex;
  gap: 8px;
}

.prev,
.next {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 50px;
  height: 50px;
  margin: 0;
  overflow: hidden;
  outline: none;
  background-color: rgba(10, 12, 18, 0.72);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-accent);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.prev:hover,
.next:hover {
  background-color: var(--color-accent);
  color: var(--color-bg-start);
  border-color: var(--color-accent);
  transform: scale(1.08);
}

.prev:active,
.next:active {
  transform: scale(0.95);
}

.button-box {
  display: flex;
  position: absolute;
  top: 0;
  left: 0;
}

.button-elem {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
}

.button-elem svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.prev:hover .button-box {
  transform: translateX(-50px);
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.next .button-box {
  left: -50px;
}

.next:hover .button-box {
  transform: translateX(50px);
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 📱 موبايل */
@media (max-width: 768px) {
  .projects-slider-container {
    height: 380px;
    margin-bottom: 80px;
  }
  
  /* Thumbnails styling scaled down and shifted up */
  .projects-slider-container .slide .item {
    width: 95px;
    height: 145px;
    border-radius: 12px;
    top: 38%; /* Shifted up to clear the bottom content card */
  }
  
  .slide .item:nth-child(1),
  .slide .item:nth-child(2) {
    width: 100% !important;
    height: 100% !important;
    top: 0 !important;
    left: 0 !important;
    transform: none !important;
  }
  
  /* Display thumbnails with fit spacing */
  .slide .item:nth-child(3) {
    left: 52%;
    display: flex !important;
  }
  .slide .item:nth-child(4) {
    left: calc(52% + 110px);
    display: flex !important;
  }
  .slide .item:nth-child(5) {
    left: calc(52% + 220px);
    display: flex !important;
  }
  .slide .item:nth-child(n + 6) {
    left: calc(52% + 330px);
  }
  
  /* Full-width content card at the bottom */
  .projects-slider-container .item .content {
    left: 16px;
    right: 16px;
    bottom: 16px;
    width: calc(100% - 32px);
    padding: 16px 20px;
    text-align: right;
    direction: rtl;
  }
  
  .content .name {
    font-size: 22px;
  }
  
  .content .des {
    font-size: 13px;
  }
  
  /* Position buttons to float above the text card on the left */
  .projects-slider-container .slider-buttons {
    bottom: 125px; 
    left: 16px;
    right: auto;
  }
  
  .prev,
  .next {
    width: 44px;
    height: 44px;
  }
  
  .button-elem {
    width: 44px;
    height: 44px;
  }
  
  .next .button-box {
    left: -44px;
  }
  
  .prev:hover .button-box {
    transform: translateX(-44px);
  }
  
  .next:hover .button-box {
    transform: translateX(44px);
  }
}

/* 📱 أصغر من 480px */
@media (max-width: 480px) {
  .projects-slider-container {
    height: 340px;
    margin-bottom: 60px;
  }
  
  .projects-slider-container .slide .item {
    width: 70px;
    height: 110px;
    border-radius: 10px;
    top: 36%;
  }
  
  /* Two thumbnails on small mobile screen to prevent overflow */
  .slide .item:nth-child(3) {
    left: 52%;
    display: flex !important;
  }
  .slide .item:nth-child(4) {
    left: calc(52% + 80px);
    display: flex !important;
  }
  .slide .item:nth-child(5) {
    display: none !important; /* Hide 3rd thumbnail on tiny screens */
  }
  
  .projects-slider-container .item .content {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: calc(100% - 24px);
    padding: 12px 16px;
  }
  
  .projects-slider-container .slider-buttons {
    bottom: 115px; 
    left: 12px;
  }
  
  .content .name {
    font-size: 18px;
  }
  
  .content .des {
    font-size: 11px;
  }
}

:root {
  --card-width: 300px;
  --card-height: 400px;
}

/* الكرت الأساسي */
.card {
  width: var(--card-width);
  height: var(--card-height);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding: 0 36px;
  perspective: 2500px;
  margin: 0 50px;
  border-radius: 5px;
  opacity: 0; /* للانبثاق */
  transform: translateY(50px); /* للانبثاق */
  transition: all 0.6s ease-out;
  z-index: 10;
  -webkit-font-smoothing: antialiased;
  image-rendering: -webkit-optimize-contrast;
}

/* عند الظهور */
.card.show {
  opacity: 1;
  transform: translateY(0);
}

/* صورة الخلفية */
.cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 5px;
}

/* الحاوية للصورة */
.wrapper {
  transition: all 0.5s;
  position: absolute;
  width: 100%;
  z-index: -1;
  border-radius: 5px;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
}

.card:hover .wrapper {
  transform: perspective(900px) translateY(-5%) rotateX(25deg) translateZ(0);
  box-shadow: 2px 35px 32px -8px rgba(0, 0, 0, 0.75);
}

/* تأثير الإضاءة */
.wrapper::before,
.wrapper::after {
  content: "";
  opacity: 0;
  width: 100%;
  height: 80px;
  transition: all 0.5s;
  position: absolute;
  left: 0;
  border-radius: 5px;
}

.wrapper::before {
  top: 0;
  height: 100%;
  background-image: linear-gradient(
    to top,
    transparent 46%,
    rgba(12, 13, 19, 0.5) 68%,
    rgba(12, 13, 19, 0.92) 100%
  );
  border-radius: 5px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.wrapper::after {
  bottom: 0;
  opacity: 1;
  background-image: linear-gradient(
    to bottom,
    transparent 46%,
    rgba(12, 13, 19, 0.5) 68%,
    rgba(12, 13, 19, 0.92) 100%
  );
  border-radius: 5px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.card:hover .wrapper::before,
.card:hover .wrapper::after {
  opacity: 1;
}

.card:hover .wrapper::after {
  height: 120px;
}

/* العنوان */
.title {
  width: 100%;
  transition: transform 0.5s;
}

.card:hover .title {
  transform: translate3d(0%, -50px, 100px);
}

/* الشخصية */
.character {
  width: 100%;
  opacity: 0;
  transition: all 0.5s;
  position: absolute;
  z-index: -1;
}

.card:hover .character {
  opacity: 1;
  transform: translate3d(0%, -30%, 100px);
}

/* رفع الكرت فوق البقية عند المرور */
.card:hover {
  z-index: 50;
}

.card {
  margin: 30px 20px; /* فوق وتحت 30px، يمين ويسار 20px */
}

.cards-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px; /* مسافة بين الكروت */
  padding: 40px 0; /* مسافة فوق وتحت */
}

/* استجابة الشاشات */
@media (max-width: 992px) {
  :root {
    --card-width: 250px;
    --card-height: 350px;
  }
}

@media (max-width: 768px) {
  :root {
    --card-width: 200px;
    --card-height: 300px;
  }
}

@media (max-width: 480px) {
  :root {
    --card-width: 160px;
    --card-height: 240px;
  }
}

.profile-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--color-accent), var(--color-bg-start));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  overflow: hidden; /* مهم حتى تقص الصورة */
}

.profile-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* Staggered Scroll Animations & Reveals */
.service-card,
.feature-card,
.certificate-card {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color var(--transition-speed) var(--ease-out), 
              background var(--transition-speed) var(--ease-out), 
              box-shadow var(--transition-speed) var(--ease-out);
}

/* Premium 3D Reveal for Project Cards */
.project-card {
  opacity: 0;
  transform: perspective(1000px) translateY(30px) translateZ(-20px) rotateX(6deg);
  transform-origin: bottom center;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color var(--transition-speed) var(--ease-out), 
              background var(--transition-speed) var(--ease-out), 
              box-shadow var(--transition-speed) var(--ease-out);
}

/* Fallback visibility for JS observer */
.service-card.slide-in-visible,
.project-card.slide-in-visible,
.feature-card.slide-in-visible,
.certificate-card.slide-in-visible {
  opacity: 1;
  transform: translateY(0) scale(1) rotateX(0);
}

/* Reveal when parent section is visible (triggered on scroll and page load) */
.section.visible .service-card,
.section.visible .feature-card,
.section.visible .certificate-card {
  opacity: 1;
  transform: translateY(0);
}

.section.visible .project-card {
  opacity: 1;
  transform: perspective(1000px) translateY(0) translateZ(0) rotateX(0);
}

/* Stagger delays in CSS */
.section.visible .service-card:nth-child(1),
.section.visible .project-card:nth-child(1),
.section.visible .feature-card:nth-child(1),
.section.visible .certificate-card:nth-child(1) { transition-delay: 0.04s; }
.section.visible .service-card:nth-child(2),
.section.visible .project-card:nth-child(2),
.section.visible .feature-card:nth-child(2),
.section.visible .certificate-card:nth-child(2) { transition-delay: 0.1s; }
.section.visible .service-card:nth-child(3),
.section.visible .project-card:nth-child(3),
.section.visible .feature-card:nth-child(3),
.section.visible .certificate-card:nth-child(3) { transition-delay: 0.16s; }
.section.visible .service-card:nth-child(4),
.section.visible .project-card:nth-child(4),
.section.visible .feature-card:nth-child(4),
.section.visible .certificate-card:nth-child(4) { transition-delay: 0.22s; }
.section.visible .service-card:nth-child(5),
.section.visible .project-card:nth-child(5),
.section.visible .feature-card:nth-child(5),
.section.visible .certificate-card:nth-child(5) { transition-delay: 0.28s; }
.section.visible .service-card:nth-child(6),
.section.visible .project-card:nth-child(6),
.section.visible .feature-card:nth-child(6),
.section.visible .certificate-card:nth-child(6) { transition-delay: 0.34s; }

/* Shimmer Skeleton Animation */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* --- Lightbox Modal Styles --- */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 99999;
  inset: 0;
  background-color: rgba(6, 8, 12, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox-modal.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  max-width: 90%;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 171, 25, 0.15);
  transform: scale(0.96);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: var(--color-text-secondary);
  font-size: 44px;
  font-weight: 300;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s ease, transform 0.2s ease;
}

.lightbox-close:hover {
  color: var(--color-accent);
  transform: scale(1.1);
}

.lightbox-caption {
  position: absolute;
  bottom: 40px;
  color: var(--color-text-primary);
  font-family: var(--font-family-headings);
  font-size: 1.4rem;
  font-weight: 600;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.8);
  letter-spacing: -0.01em;
}