/* ===== Variables ===== */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222222;
  --accent: #00a8ff;
  --accent-glow: rgba(0, 168, 255, 0.3);
  --accent-dark: #0088cc;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border: #2a2a2a;
  --border-accent: rgba(0, 168, 255, 0.3);
  --gradient: linear-gradient(135deg, #00a8ff 0%, #0066cc 100%);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 4px 24px rgba(0, 168, 255, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Cairo', sans-serif;
  --nav-height: 72px;
}

/* ===== Reset ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul { list-style: none; }

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  box-shadow: var(--shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo .logo-img {
  height: 44px;
  width: auto;
}

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

.nav-links a {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
  background: rgba(0, 168, 255, 0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 40px) 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0, 168, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(0, 102, 204, 0.06) 0%, transparent 50%),
    var(--bg-primary);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 168, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 168, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  background: rgba(0, 168, 255, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: 50px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.meta-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 168, 255, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
}

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

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--bg-secondary);
}

.section-header {
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
}

.section-desc {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 1.05rem;
}

/* ===== Introduction ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.lead strong {
  color: var(--text-primary);
}

.intro-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 24px;
  padding: 16px 20px;
  background: rgba(0, 168, 255, 0.06);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.intro-note svg {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 2px;
}

.intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

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

.stat-card.accent {
  background: rgba(0, 168, 255, 0.08);
  border-color: var(--border-accent);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== Goals ===== */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.goal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}

.goal-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.goal-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.goal-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.goal-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Scope Tabs ===== */
.scope-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.scope-tab {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.scope-tab:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.scope-tab.active {
  background: var(--gradient);
  border-color: transparent;
  color: white;
  box-shadow: var(--shadow-accent);
}

.scope-panels {
  position: relative;
}

.scope-panel {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  animation: fadeIn 0.4s ease;
}

.scope-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.scope-panel h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--accent);
}

.scope-panel h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.scope-panel > p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.feature-item {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding-right: 32px;
}

.feature-item::before {
  content: '✓';
  position: absolute;
  right: 12px;
  color: var(--accent);
  font-weight: 700;
}

.feature-item:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.workflow {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.workflow-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.workflow-step span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--gradient);
  border-radius: 50%;
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.admin-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.admin-block h4 {
  color: var(--accent);
  margin-bottom: 12px;
}

.admin-block ul li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.admin-block ul li:last-child {
  border-bottom: none;
}

/* ===== Technologies ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 60px;
}

.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}

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

.tech-card.highlight-tech {
  border-color: var(--border-accent);
  background: rgba(0, 168, 255, 0.05);
}

.tech-category {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tech-name {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.architecture {
  text-align: center;
}

.architecture h3 {
  font-size: 1.3rem;
  margin-bottom: 32px;
  color: var(--accent);
}

.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.arch-item {
  padding: 16px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
}

.arch-connector {
  color: var(--accent);
  font-size: 1.2rem;
}

.arch-services {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.arch-service {
  padding: 10px 20px;
  background: rgba(0, 168, 255, 0.08);
  border: 1px dashed var(--border-accent);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  right: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-right: 56px;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  right: 12px;
  top: 6px;
  width: 18px;
  height: 18px;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  border-radius: 50%;
  z-index: 1;
}

.timeline-item.highlight-phase .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: var(--transition);
}

.timeline-item:hover .timeline-content {
  border-color: var(--border-accent);
}

.timeline-duration {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 168, 255, 0.1);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 600;
}

.timeline-item.highlight-phase .timeline-content {
  border-color: var(--border-accent);
  background: rgba(0, 168, 255, 0.05);
}

/* ===== Financial ===== */
.financial-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.fin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
}

.fin-card.accent-fin {
  background: rgba(0, 168, 255, 0.08);
  border-color: var(--border-accent);
}

.fin-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.fin-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.table-wrapper {
  margin-bottom: 48px;
}

.table-wrapper h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.data-table thead {
  background: rgba(0, 168, 255, 0.08);
}

.data-table th {
  padding: 14px 20px;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.data-table tbody tr:hover {
  background: rgba(0, 168, 255, 0.03);
}

.data-table .total-row {
  background: rgba(0, 168, 255, 0.06);
}

.data-table .total-row td {
  color: var(--text-primary);
  font-weight: 600;
  border-bottom: none;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-logo {
  height: 48px;
  margin-bottom: 12px;
}

.footer-brand h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-info {
  text-align: left;
}

.footer-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-company {
  font-size: 1.1rem !important;
  font-weight: 700 !important;
  color: var(--accent) !important;
  margin-top: 8px;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; }
  .goals-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(3, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    left: 0;
    background: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .hero-meta { gap: 20px; }
  .goals-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .financial-summary { grid-template-columns: 1fr; }
  .workflow-steps { grid-template-columns: 1fr; }
  .scope-panel { padding: 24px; }
  .footer-content { flex-direction: column; text-align: center; }
  .footer-info { text-align: center; }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .tech-grid { grid-template-columns: 1fr; }
  .intro-stats { grid-template-columns: 1fr; }
  .scope-tabs { gap: 6px; }
  .scope-tab { font-size: 0.8rem; padding: 8px 14px; }
}

/* ===== Scroll Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}