/**
 * Base styles — reset, document defaults, global elements
 */

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

html {
  text-size-adjust: none;
  -webkit-text-size-adjust: none;
  -moz-text-size-adjust: none;
  -ms-text-size-adjust: none;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scrollbar-color: var(--color-scroll-thumb) var(--color-scroll-track);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-scroll-track);
}

::-webkit-scrollbar-thumb {
  background: var(--color-scroll-thumb);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-scroll-thumb-hover);
}

::selection {
  background-color: var(--color-accent-muted);
  color: var(--color-text-primary);
}

:focus-visible {
  outline: var(--border-width-strong) solid var(--color-focus);
  outline-offset: 3px;
}

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

img,
svg,
video {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

picture {
  display: block;
}

hr {
  border: none;
  border-top: var(--border-width) solid var(--color-border);
  margin: var(--space-5) 0;
}

/* ——— Form elements ——— */

input,
textarea,
select {
  font: inherit;
  color: var(--color-text-primary);
  background-color: var(--color-input-bg);
  border: var(--border-width) solid var(--color-input-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  transition: var(--transition-border), var(--transition-color), box-shadow var(--duration-fast) var(--ease-default);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-input-placeholder);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--color-input-border-hover);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-input-border-focus);
  outline: var(--border-width-strong) solid var(--color-focus);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
  min-height: 6rem;
}

button {
  font: inherit;
  cursor: pointer;
}

fieldset {
  border: var(--border-width) solid var(--color-border);
  padding: var(--space-3);
  margin: 0;
}

legend {
  color: var(--color-text-primary);
  padding: 0 var(--space-1);
}