@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');

/* --- DESIGN SYSTEM VARIABLES --- */
:root {
  /* Colors */
  --bg-primary: #09090b;
  --bg-secondary: #121215;
  --bg-tertiary: #18181b;
  --bg-glass: rgba(15, 15, 18, 0.7);
  --border-glass: rgba(255, 255, 255, 0.06);
  --border-glass-hover: rgba(255, 255, 255, 0.12);
  
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  
  /* Accents */
  --accent-primary: #6366f1; /* Indigo */
  --accent-secondary: #06b6d4; /* Cyan */
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #0891b2 100%);
  --accent-glow: rgba(99, 102, 241, 0.15);
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* 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);
  
  /* Spacing */
  --container-max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

/* --- GLASS CONTAINER STYLE --- */
.glass-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  transition: var(--transition-medium);
}

.glass-panel:hover {
  border-color: var(--border-glass-hover);
  box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.5);
}

/* --- COMMON COMPONENTS --- */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  border: none;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
  background: var(--accent-gradient-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-glass-hover);
  backdrop-filter: blur(8px);
}

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

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 50px;
}

/* --- HEADER / NAVIGATION --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 100;
  transition: var(--transition-medium);
  border-bottom: 1px solid transparent;
}

header.scrolled {
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glass);
  height: 70px;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.logo img {
  height: 36px;
  width: 36px;
  border-radius: 6px;
  object-fit: cover;
  border: 1px solid var(--border-glass-hover);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 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: 100%;
  height: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-medium);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition-medium);
}

/* --- HERO SECTION --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-grid-bg {
  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;
  background-position: center center;
  mask-image: radial-gradient(circle at center, black, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 80%);
  z-index: 0;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

.hero-content {
  max-width: 650px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 99px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-primary);
  margin-bottom: 24px;
}

.hero-tag .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-secondary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

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

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 550px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-card {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  border-radius: 24px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.hero-card-glow {
  position: absolute;
  width: 150%;
  height: 150%;
  background: conic-gradient(
    from 180deg at 50% 50%,
    var(--accent-primary) 0deg,
    var(--accent-secondary) 120deg,
    transparent 240deg,
    var(--accent-primary) 360deg
  );
  animation: spin 8s linear infinite;
  z-index: 1;
}

.hero-card-inner {
  position: absolute;
  inset: 2px;
  background: var(--bg-secondary);
  border-radius: 22px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px;
  text-align: center;
}

.hero-card-logo {
  width: 90px;
  height: 90px;
  border-radius: 18px;
  margin-bottom: 24px;
  border: 1px solid var(--border-glass-hover);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.hero-card-inner h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.hero-card-inner p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- SERVICES SECTION --- */
.services {
  padding: 100px 0;
  position: relative;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  padding: 40px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.5rem;
  margin-bottom: 28px;
  transition: var(--transition-medium);
}

.service-card:hover .service-icon {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
  transform: scale(1.05);
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 16px;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  border-top: 1px solid var(--border-glass);
  padding-top: 20px;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.service-features li svg {
  color: var(--accent-secondary);
  flex-shrink: 0;
}

/* --- REFERENCES SECTION --- */
.references {
  padding: 100px 0;
}

.portfolio-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  padding: 8px 20px;
  border-radius: 99px;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-medium);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.portfolio-item {
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
}

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

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9, 9, 11, 0.95) 0%, rgba(9, 9, 11, 0.4) 60%, transparent 100%);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  transition: var(--transition-medium);
  z-index: 1;
}

.portfolio-item:hover .portfolio-img {
  transform: scale(1.08);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay .tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-secondary);
  margin-bottom: 8px;
}

.portfolio-overlay h3 {
  font-size: 1.35rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.portfolio-overlay p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Portfolio Details Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-medium);
}

.modal.active {
  opacity: 1;
  pointer-events: all;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 800px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass-hover);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.8);
  transform: translateY(20px);
  transition: var(--transition-medium);
}

.modal.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.modal-img {
  width: 100%;
  height: 350px;
  object-fit: cover;
}

.modal-body {
  padding: 40px;
}

.modal-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 99px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: var(--accent-primary);
  margin-bottom: 16px;
}

.modal-title {
  font-size: 2rem;
  margin-bottom: 16px;
}

.modal-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 0.95rem;
}

.modal-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  border-top: 1px solid var(--border-glass);
  padding-top: 24px;
}

.modal-meta-item span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.modal-meta-item p {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--text-primary);
}

/* --- CONTACT SECTION --- */
.contact {
  padding: 100px 0 140px 0;
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-top: 40px;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.contact-detail-item h4 {
  font-size: 0.95rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-detail-item p,
.contact-detail-item a {
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-detail-item a:hover {
  color: var(--accent-secondary);
}

.contact-form-panel {
  padding: 50px;
}

.form-group {
  position: relative;
  margin-bottom: 30px;
}

.form-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-glass-hover);
  padding: 12px 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  transition: var(--transition-medium);
  outline: none;
}

.form-label {
  position: absolute;
  top: 12px;
  left: 0;
  font-size: 1rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: var(--transition-medium);
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: -16px;
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 500;
}

.form-input:focus {
  border-color: var(--accent-primary);
}

textarea.form-input {
  min-height: 120px;
  resize: none;
}

/* Form Submit Status */
.form-status {
  margin-top: 20px;
  padding: 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
  animation: fadeIn 0.3s ease;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* --- FOOTER --- */
footer {
  border-top: 1px solid var(--border-glass);
  padding: 40px 0;
  background: var(--bg-primary);
}

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

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

.social-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.social-links a {
  color: var(--text-muted);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.social-links a:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* --- SCROLL REVEAL ANIMATIONS --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

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

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3.5rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .contact-info {
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 50px;
    padding-top: 40px;
  }
  
  .hero-content {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .nav-toggle {
    display: block;
    z-index: 110;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-glass);
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    transition: var(--transition-medium);
    z-index: 105;
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  
  .contact-form-panel {
    padding: 30px;
  }
  
  footer .container {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}