:root {
    --color-asphalt: #1a1f26;
    --color-asphalt-light: #252b36;
    --color-road: #2f3640;
    --color-line-yellow: #f5c518;
    --color-line-white: rgba(255, 255, 255, 0.9);
    --color-accent: #e85d04;
    --color-accent-dark: #c44d03;
    --color-eu-blue: #1d4ed8;
    --color-text: #f8fafc;
    --color-muted: #94a3b8;
    --font-display: "Roboto Condensed", "Segoe UI", system-ui, sans-serif;
    --font-sans: "Segoe UI", system-ui, sans-serif;
    --max-width: 1100px;
    --header-height: 76px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-asphalt);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Hlavička – průmyslový pruh jako silniční značení */
.site-header {
    background: linear-gradient(180deg, var(--color-asphalt-light) 0%, var(--color-asphalt) 100%);
    border-bottom: 4px solid var(--color-line-yellow);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.site-header::after {
    content: "";
    display: block;
    height: 3px;
    background: repeating-linear-gradient(
        90deg,
        var(--color-accent) 0,
        var(--color-accent) 12px,
        transparent 12px,
        transparent 20px
    );
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
    gap: 1.5rem;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.logo-icon {
    flex-shrink: 0;
    color: var(--color-line-yellow);
}

.logo span {
    color: var(--color-line-yellow);
}

.main-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.75rem;
}

.main-nav a {
    font-family: var(--font-display);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
    text-decoration: none;
    font-weight: 600;
    padding: 0.4rem 0;
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
    border-bottom-color: var(--color-line-yellow);
}

/* Hero – dálnice / mezinárodní doprava */
.hero {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5rem 0 8rem;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(26, 31, 38, 0.88) 0%, rgba(37, 43, 54, 0.6) 50%, rgba(26, 31, 38, 0.95) 100%),
        linear-gradient(105deg, transparent 48%, rgba(245, 197, 24, 0.04) 49%, transparent 51%),
        linear-gradient(165deg, #14181e 0%, #2a3340 40%, #1e2630 100%);
}

/* Volitelně: vlastní foto kamionu – soubor assets/images/hero.jpg */
.hero.has-photo {
    background:
        linear-gradient(180deg, rgba(26, 31, 38, 0.9) 0%, rgba(26, 31, 38, 0.7) 50%, rgba(26, 31, 38, 0.95) 100%),
        url("../assets/images/hero.jpg") center / cover no-repeat;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 40% at 50% 0%, rgba(245, 197, 24, 0.06), transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-asphalt);
    background: var(--color-line-yellow);
    padding: 0.45rem 1rem;
    margin-bottom: 1.25rem;
    border-radius: 2px;
}

.hero-badge svg {
    width: 1.1rem;
    height: 1.1rem;
}

.hero-label {
    font-family: var(--font-display);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--color-line-yellow);
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 6vw, 3.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero-text {
    color: var(--color-muted);
    max-width: 40ch;
    margin: 0 auto 2rem;
    font-size: 1.05rem;
}

.hero-contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    margin: 0 auto 2.5rem;
    padding: 1.35rem 1.75rem;
    max-width: 26rem;
    background: #2a313c;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--color-line-yellow);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero-contact-label {
    font-size: 0.95rem;
    color: #cbd5e1;
    margin: 0;
}

.hero-contact-link,
.hero-contact-link:link,
.hero-contact-link:visited,
.hero-contact-link:hover,
.hero-contact-link:active,
.hero-contact-link:focus {
    color: #1a1f26 !important;
    text-decoration: none !important;
}

.hero-contact-link {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    background: var(--color-line-yellow);
    padding: 0.75rem 1.75rem;
    border-radius: 3px;
    border: 2px solid #c49a0d;
    box-shadow: 0 3px 0 #9e7b0a;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.2s, transform 0.15s, box-shadow 0.15s;
}

.hero-contact-link:hover {
    background: #ffe04d;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(245, 197, 24, 0.45);
}

.hero-contact-link:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 4px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
    list-style: none;
    font-family: var(--font-display);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
}

.hero-features li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.hero-features li::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    transform: rotate(45deg);
}

/* Silniční pruh v patě hero */
.road-strip {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: var(--color-road);
    border-top: 2px solid #3d4654;
}

.road-strip::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 4px;
    transform: translateY(-50%);
    background: repeating-linear-gradient(
        90deg,
        var(--color-line-yellow) 0,
        var(--color-line-yellow) 40px,
        transparent 40px,
        transparent 72px
    );
}

.road-strip::after {
    content: "";
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--color-line-white);
    opacity: 0.35;
}

.site-footer {
    padding: 1.25rem 0;
    background: var(--color-asphalt-light);
    border-top: 3px solid var(--color-road);
    color: var(--color-muted);
    font-size: 0.875rem;
    text-align: center;
}

.footer-tagline {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-line-yellow);
    margin-bottom: 0.35rem;
}

/* Hamburger tlačítko – skryté na desktopu */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition: border-color 0.2s;
}

.nav-toggle:hover {
    border-color: var(--color-line-yellow);
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
    transform-origin: center;
}

/* Animace do X při otevření */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Tablet (max 900px) */
@media (max-width: 900px) {
    .main-nav a {
        font-size: 0.875rem;
        letter-spacing: 0.04em;
    }

    .main-nav ul {
        gap: 0.25rem 1.25rem;
    }
}

/* Mobil (max 680px) – hamburger */
@media (max-width: 680px) {
    .nav-toggle {
        display: flex;
    }

    .header-inner {
        flex-wrap: nowrap;
        align-items: center;
        min-height: var(--header-height);
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-asphalt-light);
        border-top: 2px solid var(--color-line-yellow);
        border-bottom: 3px solid var(--color-road);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        z-index: 200;
        padding: 0.5rem 0;
    }

    .main-nav.is-open {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .main-nav li:last-child {
        border-bottom: none;
    }

    .main-nav a {
        display: block;
        padding: 0.9rem 1.5rem;
        font-size: 1rem;
        border-bottom: none;
    }

    .main-nav a:hover,
    .main-nav a.active {
        background: rgba(245, 197, 24, 0.08);
        color: var(--color-line-yellow);
        border-bottom: none;
    }

    .hero {
        padding: 3rem 0 6rem;
    }

    .hero-contact {
        width: 100%;
        max-width: 100%;
        padding: 1.1rem 1.25rem;
    }

    .hero-contact-link {
        font-size: 0.95rem;
        padding: 0.7rem 1.1rem;
        word-break: break-all;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
}