/*
 * kthread.dev - Personal website styles
 * Copyright (c) 2025 kthread
 * Licensed under the MIT License - see LICENSE file for details
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Consolas', monospace;

  --font-size-xs: clamp(0.75rem, 1.5vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 2vw, 1rem);
  --font-size-base: clamp(1rem, 2.5vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 3vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 3.5vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 4vw, 2rem);
  --font-size-3xl: clamp(2rem, 5vw, 2.5rem);

  --line-height-tight: 1.2;
  --line-height-base: 1.5;
  --line-height-relaxed: 1.7;

  --color-bg: #0a0a0a;
  --color-bg-secondary: #1a1a1a;
  --color-text: #ffffff;
  --color-text-secondary: #888888;
  --color-text-muted: #555555;
  --color-accent: #00ff41;
  --color-accent-dim: #008f23;
  --color-border: #333333;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --transition: 200ms ease;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  font-weight: 400;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

#noise-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.03;
  mix-blend-mode: screen;
}

.container {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.main {
  position: relative;
  z-index: 1;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.nav-brand {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition);
  position: relative;
}

.nav-link::before {
  content: '> ';
  opacity: 0;
  transition: opacity var(--transition);
}

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

.nav-link:hover::before {
  opacity: 1;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-3xl) 0;
}

.hero-content {
  max-width: 100%;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 400;
  line-height: var(--line-height-tight);
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--color-text);
}

.hero-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-2xl) 0;
  line-height: var(--line-height-relaxed);
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  text-decoration: none;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  transition: all var(--transition);
  cursor: pointer;
}

.btn::before {
  content: '[ ';
}

.btn::after {
  content: ' ]';
}

.btn-primary {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.btn-secondary:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.section {
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 500;
  margin: 0 0 var(--spacing-2xl) 0;
  color: var(--color-accent);
}

.section-title::before {
  content: '// ';
  color: var(--color-text-muted);
}

.about-content {
  display: grid;
  gap: var(--spacing-2xl);
}

.about-text p {
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--color-text-secondary);
  max-width: 65ch;
}

.skills h3 {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin: 0 0 var(--spacing-md) 0;
}

.skills h3::before {
  content: '$ ';
  color: var(--color-accent);
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-secondary);
}

.skill::before {
  content: '- ';
  color: var(--color-accent);
}

.projects-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.project-card {
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  background: var(--color-bg-secondary);
  transition: border-color var(--transition);
}

.project-card:hover {
  border-color: var(--color-accent);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.project-title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  margin: 0;
  color: var(--color-text);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: color var(--transition);
}

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

.project-description {
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-md) 0;
  line-height: var(--line-height-relaxed);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tech-tag {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  background: rgba(0, 255, 65, 0.1);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-accent-dim);
}

.contact-content {
  max-width: 100%;
}

.contact-description {
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-xl) 0;
  line-height: var(--line-height-relaxed);
  max-width: 60ch;
}

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

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-label {
  color: var(--color-text-muted);
  min-width: 80px;
}

.contact-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-link:hover {
  color: var(--color-accent);
}

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

*:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  #noise-canvas {
    opacity: 0.01;
  }
}

@media (prefers-contrast: high) {
  :root {
    --color-text: #ffffff;
    --color-bg: #000000;
    --color-border: #ffffff;
  }

  #noise-canvas {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }

  .nav-menu {
    gap: var(--spacing-md);
  }

  .hero {
    padding: var(--spacing-2xl) 0;
    min-height: 80vh;
  }

  .project-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: fit-content;
  }

  #noise-canvas {
    opacity: 0.01;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .nav {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}