:root {
    --bg: #0f0f12;
    --bg-elev: #15151a;
    --text: #f2f3f5;
    --muted: #a0a3ab;
    --accent: #5ac8fa;
    --accent-contrast: #061118;
    --ring: 0 0 0 8px rgb(90 200 250 / 12%);
    --logo-filter: invert(1) brightness(1.15) contrast(1.05);
    --transition: 0.25s ease;
}

.light {
    --bg: #ffffff; 
    --bg-elev: #f6f7f9; 
    --text: #0d0f13; 
    --muted: #5b6270; 
    --accent: #007aff; 
    --accent-contrast: #ffffff; 
    --logo-filter: none;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    gap: 32px;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-img {
    width: clamp(100px, 15vw, 160px);
    filter: var(--logo-filter);
    transition: filter var(--transition);
}

.brand .name { 
    margin: 0; 
    font-size: clamp(22px, 4vw, 32px); 
    line-height: 1.1; 
}
.roles { 
    margin: 4px 0 0; 
    color: var(--muted); 
    font-size: clamp(13px, 2.5vw, 16px); 
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    display: flex;
    background: var(--bg-elev);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid color-mix(in oklab, var(--text) 10%, transparent);
}

.lang-btn {
    border: 0;
    background: transparent;
    color: var(--text);
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
}

.lang-btn[aria-pressed="true"] {
    background: var(--accent);
    color: var(--accent-contrast);
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid color-mix(in oklab, var(--text) 10%, transparent);
    background: var(--bg-elev);
    color: var(--text);
    cursor: pointer;
    display: grid;
    place-items: center;
    font-size: 18px;
}

.hero {
    position: relative;
    border-radius: 20px;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('../../images/hero.jpg') center/cover;
    min-height: 280px;
    display: flex;
    align-items: flex-end;
    padding: 30px;
    border: 1px solid color-mix(in oklab, var(--text) 10%, transparent);
}
.hero-title { margin: 0; font-size: clamp(24px, 5vw, 36px); color: #fff; }
.hero-sub { margin: 8px 0 0; color: rgba(255,255,255,0.8); }

.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 12px;
    background: var(--bg-elev);
    color: var(--text);
    font-weight: 600;
    border: 1px solid color-mix(in oklab, var(--text) 10%, transparent);
    transition: transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn.primary { background: var(--accent); color: var(--accent-contrast); border: 0; }

.footer { color: var(--muted); font-size: 14px; }

@media (max-width: 650px) {
    .header { flex-direction: column; align-items: flex-start; }
    .header-right { width: 100%; justify-content: space-between; }
    .btn { width: 100%; text-align: center; }
}