/*
  Lethal Labs - Base Styles
  Apple-inspired Design System (Premium Dark Mode)
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Apple Design System Tokens */
  --bg-color: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-glass: rgba(29, 29, 31, 0.9); /* Darker tint for header */
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --nav-text: #f5f5f7; /* Light text for dark header */
  --accent-color: #0066cc; /* Classic Apple Blue */
  --accent-hover: #004499;
  --accent-soft: rgba(0, 102, 204, 0.05);
  --border-color: #d2d2d7;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);

  /* Typography - Apple SF Pro Fonts */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;

  /* Spacing */
  --nav-height: 48px;
  --section-padding: 80px 22px;
  --border-radius: 12px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.47059; /* Apple standard */
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.022em;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 1s ease-out forwards;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-color);
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.nav-content {
  width: 100%;
  max-width: 1000px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.nav-brand a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--nav-text);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
}

.nav-brand img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  color: var(--nav-text);
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.nav-links a:hover {
  opacity: 1;
}

/* Hero Section */
.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 60px 20px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.07143;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.hero p {
  font-size: 1.7rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin-bottom: 30px;
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: #fff;
  padding: 12px 22px;
  border-radius: 980px; /* Apple pill shape */
  font-size: 17px;
  font-weight: 400;
  text-align: center;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-color);
  border: none;
  font-weight: 400;
}

.btn-secondary:hover {
  background-color: transparent;
  text-decoration: underline;
  color: var(--accent-color);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--section-padding);
}

/* Sections */
.section-title {
  font-size: 2.5rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 50px;
  letter-spacing: -0.02em;
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  padding: 64px 22px;
  text-align: left; /* Apple footer is often left-aligned or column-based */
  border-top: none;
  color: var(--text-secondary);
  font-size: 12px;
}

footer .container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0;
}

footer p {
  margin-bottom: 20px;
  line-height: 1.33337;
}

footer a {
  color: #424245;
  margin: 0 10px 0 0;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Cards (for projects) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background-color: var(--bg-secondary);
  border-radius: 18px;
  padding: 40px;
  transition: all 0.3s ease;
  border: none;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: scale(1.02);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.1rem;
  flex-grow: 1;
}

.card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 20px;
  object-fit: contain;
  max-height: 200px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 18px;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 17px;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
}

/* Address Box */
.address-box {
  background-color: #f5f5f7;
  padding: 14px 18px;
  border-radius: var(--border-radius);
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.address-box code {
  color: var(--text-primary);
  font-family: "SF Mono", "SFMono-Regular", ui-monospace, monospace;
  font-size: 14px;
  word-break: break-all;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--nav-text);
  cursor: pointer;
  padding: 5px;
}

/* Responsiveness */
@media (max-width: 600px) {
  .hero h1 { font-size: 2.5rem; }
  .hero p { font-size: 1.1rem; }
  
  .mobile-menu-btn { display: block; }
  
  .nav-links {
    display: none;
    position: absolute;
    top: calc(var(--nav-height) + 1px);
    left: 0;
    width: 100%;
    background: #1d1d1f; /* Opaque Dark Color */
    flex-direction: column;
    padding: 10px 20px 30px;
    gap: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 999;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  
  .nav-links.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-links a {
    color: var(--nav-text);
    padding: 15px 0;
    font-size: 17px;
    font-weight: 400;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
    opacity: 0.8;
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-links a:hover {
    opacity: 1;
    color: var(--accent-color);
  }
  
  .grid { grid-template-columns: 1fr !important; gap: 30px !important; }
  
  .container { padding: 60px 20px; }
  
  /* Fix sticky sidebar in docs.html for mobile */
  aside {
    position: static !important;
    margin-bottom: 30px;
    width: 100% !important;
    min-width: unset !important;
  }
  
  /* Flex wrap fix for docs.html */
  div[style*="display: flex; gap: 40px;"] {
    flex-direction: column;
    gap: 20px !important;
  }
}