/* ============================================================
   Visual system – base
   Element selectors only: resets, typography, forms.
   ============================================================ */

* {
    box-sizing: border-box;
}

/* <search> is a landmark element, but a browser that doesn't know it yet lays
   it out inline, which would collapse the box it wraps. */
search {
    display: block;
}

html {
    scroll-snap-type: y proximity;
    scroll-padding-top: calc(var(--nav-height) + 1rem - 3px);
}

body {
    background-color: var(--paper);
    /* A theme can lay a gradient over its flat colour; the colour stays as the
       thing underneath it, so a theme that sets no image is unaffected. */
    background-image: var(--paper-image, none);
    background-attachment: fixed;
    color: var(--ink);
    line-height: 1.55;
    font-size: 0.9375rem;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-family: var(--display-font);
    font-weight: 640;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.05rem; }

a {
    color: var(--ink);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

p a {
    color: var(--link);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--link) 35%, transparent);
    text-underline-offset: 2px;
}

p a:hover {
    color: var(--accent-strong);
    text-decoration-color: currentColor;
}

/* ---------- Focus & motion ---------- */

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

/* ---------- Raw form elements ---------- */

fieldset {
    border: 1px solid var(--hairline);
    border-radius: var(--radius-ctl);
    padding: 0.5rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

legend {
    font-family: var(--display-font);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--ink);
    padding: 0;
    margin-bottom: 0;
}

label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 550;
    color: var(--muted);
    margin-bottom: 0.3rem;
}

input,
textarea,
select {
    background-color: var(--surface);
    color: var(--ink);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-pill);
    padding: 0.5rem;
    font-size: 0.9375rem;
    width: 100%;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea {
    border-radius: var(--radius-ctl);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

input::placeholder,
textarea::placeholder {
    color: color-mix(in srgb, var(--muted) 75%, transparent);
    opacity: 1;
}

input[type='checkbox'],
input[type='radio'] {
    width: auto;
    accent-color: var(--accent);
}

select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%2368716b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    padding-right: 2.25rem;
}

input[type='file'] {
    min-width: 0;
    padding: 0;
    border-style: none;
    color: var(--muted);
    width: 7rem;
    font-size: 0.8125rem;
}

input[type='file']::file-selector-button {
    background-color: var(--surface-2);
    background-image: var(--button-image, none);
    color: var(--ink);
    border: none;
    border-radius: var(--radius-pill);
    width: 100%;
    padding: 0.5rem 1rem;
    font-weight: 550;
    font-size: 0.875rem;
    line-height: 1.4;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}

input[type='file']:hover::file-selector-button {
    background-color: color-mix(in srgb, var(--surface-2) 80%, var(--ink) 8%);
    background-image: var(--button-image-hover, var(--button-image, none));
}