/* ==========================================================================
   Base — Reset, Body, Typography, Scrollbar
   ========================================================================== */

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

body { caret-color: transparent; }
input, textarea, select, [contenteditable="true"] { caret-color: auto; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  background-image: radial-gradient(ellipse at 50% 0%, var(--color-primary-muted) 0%, transparent 60%);
  background-repeat: no-repeat;
  background-size: 100% 800px;
  transition: background-color var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

::selection {
  background: var(--color-primary);
  color: #fff;
}

/* Focus-visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius);
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-surface); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-faint); }

/* Card borders — shared across themes */
.post-card,
.album-card,
.gallery-item {
  border: 1px solid var(--color-border);
}

[data-theme="light"] .input {
  border-color: #b4b4be;
}

[data-theme="light"] .input:focus {
  border-color: var(--color-primary);
}

[data-theme="light"] .btn-ghost {
  background: var(--color-bg-raised);
}

[data-theme="light"] .btn-primary {
  box-shadow: 0 1px 3px rgba(68, 102, 153, 0.3);
}

[data-theme="light"] .btn-primary:hover {
  box-shadow: 0 2px 8px rgba(68, 102, 153, 0.4);
}

[data-theme="light"] .code-copy {
  background: var(--color-bg-raised);
  color: var(--color-text-muted);
}

/* Dark mode — contrast and definition */
[data-theme="dark"] .input {
  background: var(--color-bg-elevated);
}

[data-theme="dark"] .btn-ghost {
  background: var(--color-bg-raised);
}

[data-theme="dark"] .btn-primary {
  box-shadow: 0 1px 4px rgba(119, 119, 170, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 2px 10px rgba(119, 119, 170, 0.4);
}

[data-theme="dark"] .code-copy {
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
}