:root {
    --color-bg: #fff;
    --color-fg: #0b0b0b;
    --color-muted: #666;
    --color-primary: #0a84ff;
    --color-danger: #b00020;
    --color-bg-dark: #1a1a1a;
    --color-fg-dark: #f0f0f0;
    --color-muted-dark: #888;
    --shadow-dark: 0 1px 2px rgba(255,255,255,.08), 0 8px 24px rgba(255,255,255,.08);
    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 40px;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.08);
}

[data-theme="dark"] {
    --color-bg: var(--color-bg-dark);
    --color-fg: var(--color-fg-dark);
    --color-muted: var(--color-muted-dark);
    --shadow: var(--shadow-dark);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { 
    background: var(--color-bg); 
    color: var(--color-fg); 
    font-family: var(--font-body); 
    line-height: 1.5; 
    padding: var(--space-4);
    scroll-behavior: smooth;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: min(100% - 2 * var(--space-4), 1120px);
    margin-inline: auto;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--color-bg);
    box-shadow: var(--shadow);
    margin-bottom: var(--space-4);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header__brand {
    font-weight: bold;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.site-nav__list {
    display: flex;
    list-style: none;
    gap: var(--space-3);
    margin: 0;
    padding: 0;
}

.site-nav__item {
    margin: 0;
}

.site-nav__link {
    color: var(--color-fg);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.site-nav__link:hover {
    background: var(--color-primary);
    color: var(--color-bg);
}

.site-nav__link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.site-nav__link[aria-current="page"] {
    background: var(--color-primary);
    color: var(--color-bg);
}

.breadcrumbs {
    padding: var(--space-3) 0;
    margin-bottom: var(--space-4);
}

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

.breadcrumbs a:hover {
    text-decoration: underline;
}

.breadcrumbs span {
    color: var(--color-muted);
}

.section {
    padding-block: var(--space-5);
}

.section__title {
    margin: 0 0 var(--space-3);
}

.hero {
    background: linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,.15)), url("hero.jpg") center/cover no-repeat;
    color: #fff;
    padding: clamp(2rem, 6vw, 6rem) var(--space-4);
    border-radius: var(--radius);
    margin-bottom: var(--space-4);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero h2 {
    margin: 0;
    font-size: 2.5rem;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.responsive-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin-bottom: var(--space-4);
}

.media {
    aspect-ratio: 16/9;
    width: min(100%, 960px);
    margin-inline: auto;
    margin-bottom: var(--space-4);
}

.media video {
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: var(--radius);
    object-fit: cover;
}

:where(a,button,input,select,textarea):focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:target {
    outline: 2px dashed var(--color-primary);
    outline-offset: 4px;
    scroll-margin-top: var(--space-4);
}

dialog {
    padding: var(--space-4);
    border: none;
    border-radius: var(--radius);
    width: min(92vw, 520px);
    background: var(--color-bg);
    color: var(--color-fg);
    transition: background-color 0.3s ease, color 0.3s ease;
}

dialog::backdrop {
    background: rgba(0,0,0,.5);
}

.form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.form__label {
    display: block;
    margin-bottom: var(--space-1);
    font-weight: 500;
}

.form__input,
.form__select,
.form__textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-muted);
    border-radius: var(--radius);
    background: var(--color-bg);
    color: var(--color-fg);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.form__textarea {
    resize: vertical;
    min-height: 100px;
}

.form__actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.form__button {
    padding: var(--space-4) var(--space-3);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
    width: 100%;
}

.form__button--primary {
    background: var(--color-primary);
    color: var(--color-bg);
}

.form__button--secondary {
    background: var(--color-muted);
    color: var(--color-bg);
}

.form__button:hover {
    filter: brightness(0.95);
}

.form__button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:disabled, [aria-disabled="true"] {
    opacity: .6;
    cursor: not-allowed;
}

[aria-invalid="true"] {
    border-color: var(--color-danger);
}

.form__help {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-top: var(--space-1);
}

footer {
    margin-top: var(--space-5);
    padding: var(--space-4);
    background: var(--color-bg);
    border-top: 1px solid var(--color-muted);
    text-align: center;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.subtitle_bold{
    font-size: 40px;
    color: #b00020;
    text-transform: uppercase;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: rgba(0,0,0,0.1);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255,255,255,0.1);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}