/* ========================================
   CSS VARIABLES & BASE STYLES
   ======================================== */

:root {
  /* Colors - Light Mode (Default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8f7;
  --bg-gradient-start: #ffffff;
  --bg-gradient-end: #f6f8f7;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --emerald: #046A38;
  --emerald-light: #0B8F4D;
  --emerald-glow: #10B981;
  
  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.05);
  
  /* Spacing */
  --section-padding: clamp(4rem, 10vh, 8rem);
  --container-max: 1200px;
  --container-padding: clamp(1rem, 5vw, 2rem);
  
  /* Animation */
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-primary: #0b0f0d;
  --bg-secondary: #141916;
  --bg-gradient-start: #0b0f0d;
  --bg-gradient-end: #141916;
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --emerald: #10B981;
  --emerald-light: #34D399;
  --emerald-glow: #6EE7B7;
  --glass-bg: rgba(20, 25, 22, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: rgba(0, 0, 0, 0.3);
}

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

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

body {
  font-family: var(--font-family);
  background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--duration-normal) var(--transition-smooth),
              color var(--duration-normal) var(--transition-smooth);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ========================================
   BACKGROUND EFFECTS
   ======================================== */

/* Floating Orbs */
.orbs-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  will-change: transform;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--emerald);
  top: -150px;
  right: -100px;
  animation: float-1 20s ease-in-out infinite;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--emerald-glow);
  bottom: 10%;
  left: -150px;
  animation: float-2 25s ease-in-out infinite;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: rgba(255, 255, 255, 0.5);
  top: 40%;
  right: 10%;
  animation: float-3 18s ease-in-out infinite;
}

[data-theme="dark"] .orb-3 {
  background: rgba(16, 185, 129, 0.15);
}

@keyframes float-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, 30px) scale(1.05); }
  50% { transform: translate(20px, 60px) scale(0.95); }
  75% { transform: translate(-30px, 40px) scale(1.02); }
}

@keyframes float-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.03); }
  66% { transform: translate(-20px, 50px) scale(0.98); }
}

@keyframes float-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, -40px) scale(1.05); }
}

/* Noise Texture Overlay */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 2;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  transition: background var(--duration-normal) var(--transition-smooth),
              border-color var(--duration-normal) var(--transition-smooth);
}

/* ========================================
   NAVBAR
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  z-index: 1000;
  transition: background var(--duration-normal) var(--transition-smooth),
              backdrop-filter var(--duration-normal) var(--transition-smooth);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color var(--duration-fast) var(--transition-smooth);
}

.logo:hover {
  color: var(--emerald);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--duration-fast) var(--transition-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--emerald);
  transition: width var(--duration-fast) var(--transition-smooth);
}

.nav-link:hover {
  color: var(--emerald);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mode-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--transition-smooth);
}

.mode-toggle:hover {
  border-color: var(--emerald);
  box-shadow: 0 0 20px rgba(4, 106, 56, 0.2);
}

.mode-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--text-primary);
  position: absolute;
  transition: opacity var(--duration-normal) var(--transition-smooth),
              transform var(--duration-normal) var(--transition-smooth);
}

.icon-sun {
  opacity: 1;
  transform: rotate(0);
}

.icon-moon {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="dark"] .icon-sun {
  opacity: 0;
  transform: rotate(-90deg);
}

[data-theme="dark"] .icon-moon {
  opacity: 1;
  transform: rotate(0);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all var(--duration-fast) var(--transition-smooth);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-fast) var(--transition-smooth);
}

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

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

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

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 72px;
  position: relative;
}

.hero-container {
  text-align: center;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.7s var(--transition-smooth) 0.3s forwards;
}

.hero-subtext {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s var(--transition-smooth) 0.5s forwards;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.5s var(--transition-smooth) 0.7s forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--transition-smooth);
  will-change: transform, box-shadow;
}

.btn-primary {
  background: var(--emerald);
  color: white;
  border: 1px solid var(--emerald);
  box-shadow: 0 4px 14px rgba(4, 106, 56, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(4, 106, 56, 0.4);
  background: var(--emerald-light);
}

.btn-primary:active {
  transform: scale(0.98);
}

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

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--emerald);
  box-shadow: 0 8px 25px rgba(4, 106, 56, 0.15);
}

.btn-secondary:active {
  transform: scale(0.98);
}

/* ========================================
   SERVICES SECTION
   ======================================== */

.services {
  padding: var(--section-padding) 0;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  transition: all var(--duration-normal) var(--transition-smooth);
  will-change: transform, box-shadow;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--emerald);
  box-shadow: 0 20px 40px rgba(4, 106, 56, 0.15);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--emerald), var(--emerald-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.service-icon svg {
  width: 28px;
  height: 28px;
  color: white;
}

.service-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.service-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   TECH STACK SECTION
   ======================================== */

.tech-stack {
  padding: 3rem 0;
  text-align: center;
}

.tech-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.tech-pills-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.5rem 0;
}

.tech-pills-container::-webkit-scrollbar {
  display: none;
}

.tech-pills {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.tech-pill {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  transition: all var(--duration-fast) var(--transition-smooth);
  cursor: default;
}

.tech-pill:hover {
  border-color: var(--emerald);
  box-shadow: 0 0 20px rgba(4, 106, 56, 0.2);
  transform: scale(1.05);
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== */

.portfolio {
  padding: var(--section-padding) 0;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1023px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

.portfolio-card {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--duration-normal) var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  border-color: var(--emerald);
  box-shadow: 0 20px 40px rgba(4, 106, 56, 0.15);
  transform: translateY(-4px);
}

.portfolio-link-wrapper {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  width: 100%;
}

.portfolio-preview {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-secondary), var(--glass-bg));
}

.portfolio-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--duration-normal) var(--transition-smooth);
  display: block;
}

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

.portfolio-preview iframe {
  width: 100%;
  height: 100%;
  border: none;
  transform-origin: top left;
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--transition-smooth);
}

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

.view-site-btn {
  padding: 0.75rem 1.5rem;
  background: var(--emerald);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transform: translateY(10px);
  transition: all var(--duration-fast) var(--transition-smooth);
}

.portfolio-card:hover .view-site-btn {
  transform: translateY(0);
}

.portfolio-info {
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.portfolio-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--emerald);
  text-decoration: none;
  padding: 0.5rem 1rem;
  background: rgba(4, 106, 56, 0.1);
  border-radius: 8px;
  transition: all var(--duration-fast) var(--transition-smooth);
  white-space: nowrap;
}

.portfolio-link:hover {
  background: var(--emerald);
  color: white;
}

.portfolio-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) var(--transition-smooth);
}

.portfolio-link:hover svg {
  transform: translateX(4px);
}

/* ========================================
   PROCESS SECTION
   ======================================== */

.process {
  padding: var(--section-padding) 0;
}

.process-steps {
  display: flex;
  justify-content: center;
  gap: 2rem;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.process-connector {
  position: absolute;
  top: 60px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: var(--glass-border);
  z-index: 0;
}

.process-connector::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--emerald), var(--emerald-glow));
  transition: width 0.5s var(--transition-smooth);
}

.process-step {
  flex: 1;
  max-width: 240px;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 1.5rem;
  transition: all var(--duration-normal) var(--transition-smooth);
}

.process-step.active {
  border-color: var(--emerald);
  box-shadow: 0 0 30px rgba(4, 106, 56, 0.2);
}

.step-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--emerald);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all var(--duration-normal) var(--transition-smooth);
}

.process-step.active .step-icon {
  border-color: var(--emerald);
  background: linear-gradient(135deg, var(--emerald), var(--emerald-light));
}

.process-step.active .step-icon svg {
  color: white;
}

.step-icon svg {
  width: 28px;
  height: 28px;
  color: var(--emerald);
  transition: color var(--duration-normal) var(--transition-smooth);
}

.step-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.step-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.footer-nav {
  display: flex;
  gap: 2rem;
}

.footer-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--transition-smooth);
}

.footer-link:hover {
  color: var(--emerald);
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--transition-smooth),
              transform 0.6s var(--transition-smooth);
}

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

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

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

/* Tablet */
@media (max-width: 1023px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }
  
  .process-connector {
    display: none;
  }
  
  .process-step {
    max-width: 100%;
    width: 100%;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .navbar {
    height: 64px;
  }
  
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--duration-normal) var(--transition-smooth);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    padding: 0 1rem;
  }
  
  .btn {
    width: 100%;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .portfolio-preview {
    height: 240px;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-nav {
    order: -1;
  }
  
  .orb-1 {
    width: 300px;
    height: 300px;
  }
  
  .orb-2 {
    width: 250px;
    height: 250px;
  }
  
  .orb-3 {
    width: 200px;
    height: 200px;
  }
}

/* Small Mobile */
@media (max-width: 375px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .service-card {
    padding: 1.5rem;
  }
}