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

html {
    color-scheme: light dark;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.25;
    margin: 0 0 0.6em;
    color: var(--text);
}

h1 { font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 1.3rem + 1vw, 2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a {
    color: var(--brand-primary);
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}
a:hover { color: var(--brand-primary-hover); }

:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

ul, ol {
    padding-left: 1.4em;
}

blockquote {
    margin: 1.5em 0;
    padding: 0.25em 1.25em;
    border-left: 4px solid var(--brand-primary);
    color: var(--text-muted);
}

code {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    font-size: 0.9em;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--brand-primary);
    color: var(--text-inverse);
    padding: 0.75em 1.25em;
    z-index: 1000;
    border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
    left: 0;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

.btn {
    display: inline-block;
    padding: 0.65em 1.4em;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1.2;
}
.btn-primary {
    background: var(--brand-primary);
    color: var(--text-inverse);
}
.btn-primary:hover { background: var(--brand-primary-hover); color: var(--text-inverse); }
.btn-accent {
    background: var(--color-white);
    color: var(--brand-primary);
}
.btn-accent:hover { background: var(--color-teal-100); color: var(--brand-primary-hover); }
.btn-outline {
    background: transparent;
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}
.btn-outline:hover { background: var(--color-teal-100); }
.btn-small { padding: 0.4em 0.9em; font-size: 0.9rem; }
.btn-danger { background: #b3261e; color: #fff; }
.btn-danger:hover { background: #8c1d17; }

.badge {
    display: inline-block;
    padding: 0.2em 0.7em;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--color-teal-100);
    color: var(--brand-primary-hover);
}

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

.text-muted { color: var(--text-muted); }

.form-group { margin-bottom: 1.1rem; }
.form-label { display: block; font-weight: 600; margin-bottom: 0.35rem; }
.form-hint { display: block; color: var(--text-muted); font-size: 0.85rem; margin-top: 0.3rem; }
.form-control {
    width: 100%;
    padding: 0.6em 0.75em;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
}
.form-control:focus { border-color: var(--brand-primary); }
textarea.form-control { min-height: 10rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.form-check { display: flex; align-items: center; gap: 0.5em; }
.form-error { color: #b3261e; font-size: 0.85rem; margin-top: 0.3rem; }

.alert {
    padding: 0.9em 1.2em;
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    border: 1px solid transparent;
}
.alert-success { background: #e3f6e8; border-color: #b6e3c2; color: #1c5e34; }
.alert-error { background: #fbe7e6; border-color: #f2b8b5; color: #7a241d; }