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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(220, 38, 38, 0.04) 0%, transparent 35%),
    radial-gradient(circle at 90% 25%, rgba(0, 0, 0, 0.03) 0%, transparent 40%);
  background-attachment: fixed;
}

[data-theme="dark"] body {
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(239, 68, 68, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 30%, rgba(220, 38, 38, 0.05) 0%, transparent 40%);
}

/* Lightweight Developer Grid Backdrop */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: -1;
}

[data-theme="dark"] body::before {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-red);
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-highlight);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

input {
  font-family: inherit;
  outline: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }
}

/* Lock state on body when modal is open */
body.is-locked {
  overflow: hidden;
}

/* Blur effect applied to main content when locked */
.blur-when-locked {
  transition: filter var(--transition-slow);
}

body.is-locked .blur-when-locked {
  filter: blur(14px) brightness(0.7);
  pointer-events: none;
  user-select: none;
}