/* Light mode - default */
:root {
  --color-primary: #1D1D1F;
  --color-secondary: #0071E3;
  --color-accent: #06C;
  --color-text: #1D1D1F;
  --color-text-light: #6E6E73;
  --color-background: #FFFFFF;
  --color-background-alt: #F5F5F7;
  --color-background-card: #FFFFFF;
  --color-border: #D2D2D7;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --max-width: 1400px;
  --border-radius: 18px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.16);
}

/* Dark mode - respects system preference */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #F5F5F7;
    --color-text: #F5F5F7;
    --color-text-light: #A1A1A6;
    --color-background: #000000;
    --color-background-alt: #1D1D1F;
    --color-background-card: #1D1D1F;
    --color-border: #424245;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.6);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Clean background without garish gradients */

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

nav.scrolled {
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
  nav {
    background: rgba(29, 29, 31, 0.72);
    border-bottom: 1px solid rgba(66, 66, 69, 0.5);
  }

  nav.scrolled {
    background: rgba(29, 29, 31, 0.8);
    box-shadow: 0 1px 0 0 rgba(255, 255, 255, 0.1);
  }
}

nav .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 400;
  transition: opacity 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
  letter-spacing: -0.01em;
  opacity: 0.8;
}

nav a:hover {
  opacity: 1;
}

/* Hero Section */
.hero {
  margin-top: 70px;
  min-height: 70vh;
  padding: clamp(3rem, 8vw, 5rem) 2rem;
  background: var(--color-background);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero .container {
  max-width: 1000px;
  width: 100%;
  text-align: center;
}

.hero h1 {
  font-size: clamp(3.5rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.04em;
  color: var(--color-text);
}

.hero .subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 400;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.hero .platforms {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 0;
  font-weight: 400;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

/* Removed value proposition and journey sections for cleaner hero */

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}

section h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.service-card {
  padding: var(--spacing-lg);
  background: var(--color-background-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 245, 247, 0.15);
}

.service-icon {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  line-height: 1;
  transition: transform 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.service-card h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.service-card p {
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

/* About */
#about {
  background: var(--color-background-alt);
}

.about-content {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--spacing-md);
  max-width: 900px;
  margin: 0 auto;
  align-items: start;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 3px solid rgba(245, 245, 247, 0.1);
  box-shadow: var(--shadow-md);
}

.about-text p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
  line-height: 1.9;
  font-size: 1.05rem;
}

.about-text strong {
  color: var(--color-text);
  font-weight: 600;
}

.credentials {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-background-card);
  border-left: 3px solid var(--color-secondary);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.linkedin-link {
  display: inline-block;
  margin-top: var(--spacing-sm);
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 400;
  transition: opacity 0.3s ease;
}

.linkedin-link:hover {
  opacity: 0.7;
}

/* Portfolio */
#portfolio {
  background: var(--color-background-alt);
  position: relative;
}

.portfolio-item {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-background-card);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.portfolio-item:hover {
  border-color: rgba(245, 245, 247, 0.15);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.portfolio-item:last-child {
  margin-bottom: 0;
}

.portfolio-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--spacing-md);
  align-items: start;
}

.portfolio-images,
.portfolio-text {
  min-width: 0;
}

.portfolio-images {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.portfolio-images img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
  border: 1px solid rgba(66, 66, 69, 0.3);
}

.portfolio-images img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.portfolio-text h3 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.portfolio-text .client-logo {
  width: auto;
  height: 60px;
  margin-bottom: var(--spacing-sm);
}

.portfolio-text p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.highlight {
  background: rgba(0, 113, 227, 0.08);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  margin: var(--spacing-sm) 0 var(--spacing-md) 0;
  border-left: 3px solid var(--color-secondary);
  transition: all 0.3s ease;
}

.portfolio-link {
  display: block;
  margin-top: var(--spacing-sm);
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 400;
  transition: opacity 0.3s ease;
}

.portfolio-link:hover {
  opacity: 0.7;
}

/* Alternating Layout */
.portfolio-item:nth-child(even) .portfolio-content {
  grid-template-columns: 1fr 1fr;
}

.portfolio-item:nth-child(even) .portfolio-images {
  order: 2;
}

.portfolio-item:nth-child(even) .portfolio-text {
  order: 1;
}

/* Background Variations */
.portfolio-item:nth-child(odd) {
  background: var(--color-background-alt);
}

/* Contact */
#contact {
  background: var(--color-background);
}

.contact-intro {
  max-width: 700px;
  margin: 0 auto var(--spacing-md);
  text-align: center;
}

.contact-intro p {
  font-size: 1.15rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.contact-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--color-background-card);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-background);
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.submit-btn {
  width: 100%;
  padding: 1rem;
  background: var(--color-secondary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
  letter-spacing: -0.01em;
}

.submit-btn:hover {
  background: #0077ED;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.submit-btn:disabled {
  background: var(--color-border);
  cursor: not-allowed;
  transform: none;
}

.form-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: 4px;
  text-align: center;
  display: none;
}

.form-message.success {
  background: #D4EDDA;
  color: #155724;
  border: 1px solid #C3E6CB;
}

.form-message.error {
  background: #F8D7DA;
  color: #721C24;
  border: 1px solid #F5C6CB;
}

/* Responsive */
@media (max-width: 768px) {
  nav .container {
    padding: 1rem;
  }

  nav ul {
    gap: 1rem;
  }

  .hero {
    padding: var(--spacing-lg) 1rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .avatar {
    margin: 0 auto var(--spacing-md);
  }

  .portfolio-content {
    grid-template-columns: 1fr !important;
  }

  .portfolio-item:nth-child(even) .portfolio-images {
    order: 1 !important;
  }

  .portfolio-item:nth-child(even) .portfolio-text {
    order: 2 !important;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .journey {
    flex-direction: column;
    gap: 0.5rem;
  }

  .journey-arrow {
    transform: rotate(90deg);
  }

  .contact-form {
    padding: var(--spacing-md);
  }
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 45px;
}

/* Removed scroll-triggered animations per user request */

/* Premium accents */
.accent-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  border-radius: 50%;
  margin: 0 0.5rem;
  animation: pulse 2s ease infinite;
}

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