/* ============================================
   SHVETS VENTURES - Styles
   Clean, minimal, professional
   ============================================ */

/* CSS Variables */
:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-text: #ffffff;
  --color-text-muted: #888888;
  --color-accent: #ffffff;
  --color-border: #222222;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

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

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

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

a:hover {
  opacity: 0.7;
}

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

/* Typography */
h1, h2, h3 {
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--color-text-muted);
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-xl) 0;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

header.scrolled {
  border-bottom-color: var(--color-border);
}

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

.logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

nav {
  display: flex;
  gap: var(--spacing-md);
}

nav a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

nav a:hover,
nav a.active {
  color: var(--color-text);
  opacity: 1;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: var(--spacing-lg);
}

.hero-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 0;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  background: transparent;
  color: var(--color-text);
}

.btn:hover {
  background: var(--color-text);
  color: var(--color-bg);
  opacity: 1;
}

.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
}

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

/* About Section */
.about {
  background: var(--color-bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about-text h2 {
  margin-bottom: var(--spacing-md);
}

.about-text p {
  margin-bottom: var(--spacing-sm);
}

.values {
  display: grid;
  gap: var(--spacing-md);
}

.value-item {
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition);
}

.value-item:hover {
  border-color: var(--color-text-muted);
}

.value-item h3 {
  margin-bottom: var(--spacing-xs);
}

.value-item p {
  font-size: 0.875rem;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-card {
  padding: var(--spacing-lg) var(--spacing-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

.service-card:hover {
  border-color: var(--color-text-muted);
}

.service-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
}

.service-card ul {
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.service-card li {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.service-card li:last-child {
  border-bottom: none;
}

/* Section Header */
.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-header p {
  margin-top: var(--spacing-sm);
  max-width: 600px;
}

/* Contact */
.contact {
  background: var(--color-bg-secondary);
}

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

.contact-info h2 {
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  margin-bottom: var(--spacing-lg);
}

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

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left var(--transition);
}

.contact-link:hover {
  padding-left: var(--spacing-sm);
  opacity: 1;
}

.contact-link span:first-child {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  min-width: 80px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-text-muted);
}

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

/* Footer */
footer {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
}

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

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

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Projects Page */
.page-hero {
  padding-top: 150px;
  padding-bottom: var(--spacing-lg);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.project-card {
  display: block;
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
}

.project-card:hover {
  border-color: var(--color-text-muted);
  transform: translateY(-4px);
  opacity: 1;
}

.project-card .project-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.project-card h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
}

.project-card p {
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-text);
}

.project-link svg {
  transition: transform var(--transition);
}

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

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

.animate {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

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

/* Responsive */
@media (max-width: 968px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 5rem;
  }

  .menu-toggle {
    display: flex;
  }

  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    transition: right var(--transition);
  }

  nav.active {
    right: 0;
  }

  nav a {
    font-size: 1.5rem;
  }

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

  .hero-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

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

/* Selection */
::selection {
  background: var(--color-text);
  color: var(--color-bg);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}