/* 
   Aurlanta.com Design System & Stylesheet
   Created for Alexandra (Sasha) Ukrainskaya
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ==========================================
   1. Design Tokens & Root Variables
   ========================================== */
:root {
  /* Color Palette */
  --bg-dark: #0a0b0d;
  --bg-card: #12141c;
  --bg-input: #171a25;
  --border-color: rgba(255, 255, 255, 0.07);
  --border-glow: rgba(255, 184, 0, 0.25);
  
  --primary: #ffb800; /* Warm Gold */
  --primary-glow: rgba(255, 184, 0, 0.15);
  --secondary: #ff7a00; /* Amber Orange */
  --accent-blue: #00e5ff; /* Algorithmic Cyber Blue */
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-medium: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================
   2. Reset & Global Styles
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Gradients & Grid Glows */
.app-container {
  position: relative;
  width: 100%;
  min-height: 100vh;
  overflow: hidden;
}

.ambient-glow-1 {
  position: absolute;
  top: -10%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(255, 184, 0, 0.06) 0%, rgba(255, 122, 0, 0.01) 70%, transparent 100%);
  z-index: 0;
  pointer-events: none;
}

.ambient-glow-2 {
  position: absolute;
  top: 50%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.04) 0%, rgba(255, 184, 0, 0.01) 75%, transparent 100%);
  z-index: 0;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.007) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.007) 1px, transparent 1px);
  background-size: 80px 80px;
  z-index: 0;
  pointer-events: none;
}

/* Typographic Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  border-radius: var(--border-radius-sm);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* Common Section Styles */
section {
  padding: 8rem 0;
  position: relative;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.section-title span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin-bottom: 4rem;
}

/* Button & Link UI Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-medium);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #000;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(255, 184, 0, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 184, 0, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(255, 184, 0, 0.05);
  transform: translateY(-2px);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(255, 184, 0, 0.05);
  transform: translateY(-2px);
}

/* ==========================================
   3. Navigation Header
   ========================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: all var(--transition-medium);
  border-bottom: 1px solid transparent;
}

header.scrolled {
  height: 70px;
  background: rgba(10, 11, 13, 0.8);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--border-color);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
  box-shadow: 0 0 10px var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 110;
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  position: absolute;
  transition: all var(--transition-fast);
}

.mobile-toggle span:nth-child(1) { top: 0; }
.mobile-toggle span:nth-child(2) { top: 11px; }
.mobile-toggle span:nth-child(3) { top: 22px; }

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 11px;
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 11px;
}

/* ==========================================
   4. Hero Section
   ========================================== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-content {
  z-index: 2;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 2rem;
}

.hero-title span {
  display: block;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.socials-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.socials-line {
  height: 1px;
  width: 40px;
  background-color: var(--border-color);
}

.hero-graphics {
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.graphics-card {
  background: radial-gradient(135deg, rgba(23, 26, 37, 0.4) 0%, rgba(18, 20, 28, 0.8) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.graphics-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 184, 0, 0.03) 100%);
  pointer-events: none;
}

.avatar-wrapper {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 3px;
  margin-bottom: 2rem;
  box-shadow: 0 0 20px rgba(255, 184, 0, 0.2);
}

.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
}

.code-stats {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
  border-bottom: none;
}

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

.stat-value {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--primary);
}

/* ==========================================
   5. Consulting Services Section
   ========================================== */
#services {
  background-color: rgba(10, 11, 13, 0.5);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.service-card {
  background: rgba(18, 20, 28, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 3rem 2.5rem;
  transition: all var(--transition-medium);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  background: rgba(18, 20, 28, 0.9);
  box-shadow: 0 15px 40px rgba(255, 184, 0, 0.05);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 184, 0, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  transition: all var(--transition-fast);
}

.service-card:hover .service-icon {
  background: var(--primary);
  color: #000;
  box-shadow: 0 0 20px rgba(255, 184, 0, 0.3);
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================
   6. Portfolio Section (Dynamic)
   ========================================== */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.6rem 1.5rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(255, 184, 0, 0.05);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all var(--transition-medium);
  opacity: 0;
  transform: translateY(20px);
}

/* Applied dynamically via JS once visible */
.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 184, 0, 0.05);
}

.project-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background-color: #171a25;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-featured-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #000;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.project-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-subtitle {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.project-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.project-tag {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.65rem;
  border-radius: var(--border-radius-sm);
}

.project-links {
  display: flex;
  gap: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--primary);
}

.project-link svg {
  width: 16px;
  height: 16px;
}

/* ==========================================
   7. Contact Section & Info
   ========================================== */
#contact {
  background-color: rgba(10, 11, 13, 0.5);
  border-top: 1px solid var(--border-color);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  background: rgba(255, 184, 0, 0.05);
  border: 1px solid var(--border-color);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-details h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.contact-item-details p,
.contact-item-details a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-item-details a:hover {
  color: var(--primary);
}

/* Contact Form Card */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 3rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  position: relative;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px rgba(255, 184, 0, 0.1);
  background-color: rgba(23, 26, 37, 0.8);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* Error/Success elements */
.form-feedback {
  font-size: 0.8rem;
  margin-top: 0.35rem;
  display: none;
}

.form-feedback.error {
  color: #ff4a4a;
  display: block;
}

.form-status-container {
  display: none;
  padding: 1.5rem;
  border-radius: var(--border-radius-sm);
  margin-bottom: 1.5rem;
  text-align: center;
}

.form-status-container.success {
  display: block;
  background-color: rgba(46, 213, 115, 0.1);
  border: 1px solid rgba(46, 213, 115, 0.3);
  color: #2ed573;
}

.form-status-container.error {
  display: block;
  background-color: rgba(255, 74, 74, 0.1);
  border: 1px solid rgba(255, 74, 74, 0.3);
  color: #ff4a4a;
}

/* ==========================================
   8. Footer Section
   ========================================== */
footer {
  border-top: 1px solid var(--border-color);
  padding: 4rem 0;
  background-color: #060709;
}

.footer-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.footer-socials {
  display: flex;
  gap: 1rem;
}

/* ==========================================
   9. Animations
   ========================================== */
@keyframes pulse-glow {
  0% {
    box-shadow: 0 0 5px rgba(0, 229, 255, 0.3);
    opacity: 0.6;
  }
  100% {
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.9), 0 0 25px rgba(0, 229, 255, 0.5);
    opacity: 1;
  }
}

/* ==========================================
   10. Media Queries (Responsive Design)
   ========================================== */
@media (max-width: 1024px) {
  :root {
    --header-height: 70px;
  }
  
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-socials {
    justify-content: center;
  }
  
  .graphics-card {
    max-width: 480px;
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2.2rem;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  /* Navigation mobile menu */
  .mobile-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--bg-card);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    transition: right var(--transition-medium);
    z-index: 100;
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .contact-form-card {
    padding: 2rem;
  }
  
  .footer-wrapper {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
}