/* ============================================
   NIGRUM BİLİŞİM — Design System & Styles
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Primary */
  --color-bg-dark: #0a1628;
  --color-bg-darker: #060f1d;
  --color-bg-section: #0d1b30;
  --color-bg-card: rgba(15, 25, 50, 0.6);
  --color-bg-glass: rgba(255, 255, 255, 0.04);
  --color-bg-glass-hover: rgba(255, 255, 255, 0.08);

  /* Colors — Accent */
  --color-accent: #00b4d8;
  --color-accent-light: #48cae4;
  --color-accent-dark: #0077b6;
  --color-accent-glow: rgba(0, 180, 216, 0.3);

  /* Colors — Text */
  --color-text-primary: #f0f4f8;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-heading: #ffffff;

  /* Colors — Borders */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(0, 180, 216, 0.3);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #0d2847 50%, #0a1628 100%);
  --gradient-accent: linear-gradient(135deg, #0077b6, #00b4d8, #48cae4);
  --gradient-card: linear-gradient(135deg, rgba(0, 180, 216, 0.1) 0%, rgba(0, 119, 182, 0.05) 100%);
  --gradient-text: linear-gradient(135deg, #48cae4, #00b4d8, #0077b6);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --fs-4xl: 2.25rem;
  --fs-5xl: 3rem;
  --fs-6xl: 3.75rem;
  --fs-7xl: 4.5rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Borders */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px var(--color-accent-glow);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index */
  --z-header: 1000;
  --z-overlay: 900;
  --z-modal: 1100;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-light);
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

/* --- Utility Classes --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: var(--fs-4xl);
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

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

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

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Background Decorations --- */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.bg-glow--accent {
  background: var(--color-accent);
}

.bg-glow--blue {
  background: var(--color-accent-dark);
}

.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--space-lg) 0;
  transition: all var(--transition-base);
}

.header.scrolled {
  padding: var(--space-sm) 0;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-text-heading);
  z-index: var(--z-modal);
}

.header-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: var(--fs-lg);
  color: white;
}

.header-logo span {
  letter-spacing: -0.02em;
}

.header-logo .logo-dot {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-links a:hover {
  color: var(--color-text-heading);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: var(--space-xs) var(--space-lg) !important;
  background: var(--gradient-accent) !important;
  color: white !important;
  border-radius: var(--radius-full) !important;
  font-weight: 600 !important;
  font-size: var(--fs-sm) !important;
  transition: all var(--transition-fast) !important;
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.2);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  box-shadow: var(--shadow-glow) !important;
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: var(--z-modal);
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-heading);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 180, 216, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 119, 182, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero .container {
  position: relative;
  z-index: 1;
  padding-top: var(--space-5xl);
}

.hero-content {
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.8s ease-out;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 180, 216, 0.5); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(0, 180, 216, 0); }
}

.hero-title {
  font-size: var(--fs-6xl);
  font-weight: 900;
  line-height: 1.1;
  color: var(--color-text-heading);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title .accent-line {
  display: block;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--fs-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 560px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 14px 28px;
  font-size: var(--fs-sm);
  font-weight: 600;
  font-family: var(--font-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 20px rgba(0, 180, 216, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 180, 216, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--color-bg-glass);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  color: var(--color-text-primary);
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-4xl);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stat {
  position: relative;
}

.hero-stat::before {
  content: '';
  position: absolute;
  left: -var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.hero-stat:first-child::before {
  display: none;
}

.hero-stat-value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 2px;
}

/* Floating decoration */
.hero-float {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
  height: 400px;
  opacity: 0.5;
}

.hero-float .orbit {
  position: absolute;
  border: 1px solid rgba(0, 180, 216, 0.15);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}

.hero-float .orbit:nth-child(1) {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.hero-float .orbit:nth-child(2) {
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
  animation-duration: 15s;
  animation-direction: reverse;
}

.hero-float .orbit:nth-child(3) {
  width: 40%;
  height: 40%;
  top: 30%;
  left: 30%;
  animation-duration: 10s;
}

.hero-float .orbit-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--color-accent-glow);
}

.hero-float .orbit:nth-child(1) .orbit-dot { top: 0; left: 50%; transform: translate(-50%, -50%); }
.hero-float .orbit:nth-child(2) .orbit-dot { bottom: 0; right: 0; transform: translate(50%, 50%); }
.hero-float .orbit:nth-child(3) .orbit-dot { top: 50%; right: 0; transform: translate(50%, -50%); }

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* ============================================
   ABOUT
   ============================================ */
.about {
  background: var(--color-bg-darker);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  margin-top: var(--space-3xl);
}

.about-text p {
  color: var(--color-text-secondary);
  font-size: var(--fs-base);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.about-highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.about-highlight:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateX(4px);
}

.about-highlight-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xl);
  flex-shrink: 0;
  color: var(--color-accent);
}

.about-highlight h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: 2px;
}

.about-highlight p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: 0 !important;
}

/* About visual */
.about-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.about-card-stack {
  position: relative;
  width: 100%;
  max-width: 440px;
}

.about-card {
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

.about-card .card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.about-card .card-dots {
  display: flex;
  gap: 6px;
}

.about-card .card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.about-card .card-dot:nth-child(1) { background: #ff5f56; }
.about-card .card-dot:nth-child(2) { background: #ffbd2e; }
.about-card .card-dot:nth-child(3) { background: #27c93f; }

.about-card .card-title {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-left: var(--space-sm);
}

.about-card .code-line {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 2;
  color: var(--color-text-secondary);
}

.about-card .code-line .keyword { color: #c792ea; }
.about-card .code-line .function { color: #82aaff; }
.about-card .code-line .string { color: #c3e88d; }
.about-card .code-line .comment { color: var(--color-text-muted); font-style: italic; }
.about-card .code-line .number { color: #f78c6c; }

/* ============================================
   SERVICES
   ============================================ */
.services {
  background: var(--color-bg-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 180, 216, 0.08);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius-md);
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-xl);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon {
  background: rgba(0, 180, 216, 0.2);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.15);
}

.service-card h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: var(--space-md);
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

.service-features {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.service-features li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.service-features li::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================
   PORTAL
   ============================================ */
.portal {
  background: var(--color-bg-darker);
  overflow: hidden;
}

.portal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  margin-top: var(--space-3xl);
}

.portal-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.portal-feature {
  padding: var(--space-lg);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.portal-feature:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.portal-feature-icon {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-sm);
}

.portal-feature h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: 4px;
}

.portal-feature p {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* Portal visual — mock UI */
.portal-visual {
  position: relative;
}

.portal-mockup {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.portal-mockup-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-md) var(--space-lg);
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--color-border);
}

.portal-mockup-header .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.portal-mockup-header .dot:nth-child(1) { background: #ff5f56; }
.portal-mockup-header .dot:nth-child(2) { background: #ffbd2e; }
.portal-mockup-header .dot:nth-child(3) { background: #27c93f; }

.portal-mockup-header .url-bar {
  flex: 1;
  margin-left: var(--space-md);
  padding: 4px var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.portal-mockup-body {
  padding: var(--space-xl);
}

.portal-mockup-sidebar {
  display: flex;
  gap: var(--space-xl);
}

.portal-mock-nav {
  width: 160px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.portal-mock-nav-item {
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.portal-mock-nav-item.active {
  background: rgba(0, 180, 216, 0.15);
  color: var(--color-accent);
}

.portal-mock-content {
  flex: 1;
}

.portal-mock-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.portal-mock-stat {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.portal-mock-stat .stat-value {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-accent);
}

.portal-mock-stat .stat-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.portal-mock-table {
  width: 100%;
  border-collapse: collapse;
}

.portal-mock-table th,
.portal-mock-table td {
  padding: var(--space-xs) var(--space-md);
  text-align: left;
  font-size: var(--fs-xs);
  border-bottom: 1px solid var(--color-border);
}

.portal-mock-table th {
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.portal-mock-table td {
  color: var(--color-text-secondary);
}

.portal-mock-table .status {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 600;
}

.portal-mock-table .status.active { background: rgba(39, 201, 63, 0.15); color: #27c93f; }
.portal-mock-table .status.pending { background: rgba(255, 189, 46, 0.15); color: #ffbd2e; }
.portal-mock-table .status.maintenance { background: rgba(0, 180, 216, 0.15); color: var(--color-accent); }

/* ============================================
   PROJECTS
   ============================================ */
.projects {
  background: var(--color-bg-dark);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.project-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
}

.project-card:hover::after {
  opacity: 1;
}

.project-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-xl);
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
}

.project-card h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 1;
}

.project-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
  flex: 1;
  position: relative;
  z-index: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  position: relative;
  z-index: 1;
}

.project-tag {
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.15);
  border-radius: var(--radius-full);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  background: var(--color-bg-darker);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  margin-top: var(--space-3xl);
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.contact-card:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateX(4px);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 180, 216, 0.1);
  border-radius: var(--radius-md);
  font-size: var(--fs-xl);
  flex-shrink: 0;
}

.contact-card h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.contact-card a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.contact-card a:hover {
  color: var(--color-accent);
}

/* Contact form */
.contact-form {
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px var(--space-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
  background: rgba(255, 255, 255, 0.06);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.btn-submit {
  width: 100%;
  padding: 14px 28px;
  background: var(--gradient-accent);
  color: white;
  font-size: var(--fs-base);
  font-weight: 600;
  font-family: var(--font-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 180, 216, 0.3);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 180, 216, 0.4);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
}

.footer-brand p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
  max-width: 300px;
  line-height: 1.7;
}

.footer-heading {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2xl);
  margin-top: var(--space-3xl);
  border-top: 1px solid var(--color-border);
}

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

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .hero-title {
    font-size: var(--fs-5xl);
  }

  .hero-float {
    width: 280px;
    height: 280px;
    right: 2%;
  }

  .services-grid,
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portal-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .about-visual {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

/* Mobile */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .section {
    padding: var(--space-4xl) 0;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .section-title {
    font-size: var(--fs-3xl);
  }

  /* Header mobile */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-2xl);
    transition: right var(--transition-base);
    z-index: var(--z-overlay);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: var(--fs-xl);
  }

  .mobile-toggle {
    display: flex;
  }

  /* Hero mobile */
  .hero {
    min-height: 100svh;
  }

  .hero-title {
    font-size: var(--fs-4xl);
  }

  .hero-float {
    display: none;
  }

  .hero-stats {
    gap: var(--space-xl);
  }

  .hero-stat-value {
    font-size: var(--fs-2xl);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }

  /* Grids mobile */
  .services-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .portal-features {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* Footer mobile */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .portal-mockup-sidebar {
    flex-direction: column;
  }

  .portal-mock-nav {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .portal-mock-stats {
    grid-template-columns: 1fr;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero-title {
    font-size: var(--fs-3xl);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-md);
  }

  .hero-stat::before {
    display: none;
  }
}