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

:root {
  --bg: #0f0f0f;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222;
  --bg-header: #111;
  --text: #e0e0e0;
  --text-secondary: #888;
  --text-muted: #555;
  --accent: #4a9eff;
  --accent-dim: #2d6bb5;
  --border: #2a2a2a;
  --border-light: #333;
  --sticky-bg: #1c1c0e;
  --prefix-bg: #333;
  --prefix-text: #ccc;
  --danger: #e74c3c;
  --radius: 10px;
  --radius-sm: 6px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);

  /* Touch target sizes (Apple HIG: 44pt minimum) */
  --touch-min: 44px;

  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  text-rendering: optimizeLegibility;
}

html {
  scroll-behavior: smooth;
  overflow-y: scroll;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overscroll-behavior-y: contain;
}

a {
  color: var(--accent);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

a:active {
  opacity: 0.7;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* Smooth touch scrolling */
.main {
  -webkit-overflow-scrolling: touch;
}

/* iOS momentum scrolling for all scrollable areas */
@supports (-webkit-touch-callout: none) {
  /* iOS-specific styles */
  input, textarea {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
}