:root {
    --bg: #030712;
    --bg-2: #050b1c;
    --bg-main: #030712;
    --bg-panel: rgba(7, 15, 34, 0.78);
    --bg-panel-soft: rgba(10, 21, 48, 0.66);
    --bg-panel-strong: #060d1c;
    --panel: rgba(7, 15, 34, 0.78);
    --panel-2: rgba(10, 21, 48, 0.66);
    --line-color: rgba(96, 165, 250, 0.18);
    --border: rgba(96, 165, 250, 0.18);
    --border-strong: rgba(34, 211, 238, 0.34);
    --text-main: #f8fafc;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --muted: #94a3b8;
    --cyan: #19c6ff;
    --cyan-strong: #2f7dff;
    --cyan-glow: rgba(25, 198, 255, 0.42);
    --blue: #2f7dff;
    --violet: #7a4bff;
    --lime: #25d36b;
    --lime-glow: rgba(37, 211, 107, 0.28);
    --magenta: #ff2aa3;
    --magenta-strong: #c31776;
    --magenta-glow: rgba(255, 42, 163, 0.34);
    --red-accent: #ff4258;
    --red-accent-strong: #c72135;
    --red-accent-glow: rgba(255, 66, 88, 0.34);
    --green: #25d36b;
    --danger: #ff5f7c;
    --red: #ff4258;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-tech: var(--radius-sm);
    --radius-btn: 15px;
    --header-glass: rgba(4, 8, 20, 0.72);
    --shadow-panel: 0 0 0 1px rgba(96, 165, 250, 0.08), 0 22px 58px rgba(0, 0, 0, 0.46), inset 0 1px 0 rgba(255, 255, 255, 0.055);
    --gradient-brand: linear-gradient(125deg, var(--cyan) 0%, var(--blue) 32%, var(--violet) 62%, var(--magenta) 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Segoe UI", system-ui, "Inter", Arial, sans-serif;
    line-height: 1.55;
    color: var(--text-main);
}

/* Veřejný web — cyberpunk city background (admin má vlastní admin.css) */
body:not(.admin-body) {
    position: relative;
    background-color: var(--bg);
    isolation: isolate;
}

body:not(.admin-body)::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;

    background-image: url('../img/bg-cyberpunk-city.png');
    background-repeat: no-repeat;

    /* obrázek zvětšíme */
    background-size: clamp(1600px, 125vw, 2600px) auto;

    /* ukotvení dolů a na střed */
    background-position: center bottom;

    opacity: 0.72;
    transform: translateZ(0);
}

/* Tmavý overlay kvůli čitelnosti */
body:not(.admin-body)::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        linear-gradient(
            90deg,
            rgba(3, 7, 18, 0.88) 0%,
            rgba(3, 7, 18, 0.58) 35%,
            rgba(3, 7, 18, 0.28) 70%,
            rgba(3, 7, 18, 0.52) 100%
        ),
        linear-gradient(
            180deg,
            rgba(3, 7, 18, 0.08) 0%,
            rgba(3, 7, 18, 0.30) 55%,
            rgba(3, 7, 18, 0.92) 100%
        );
}

/* Podstránky — decentnější pozadí, čitelnější obsah */
body.page-inner:not(.home-page):not(.admin-body)::before {
    opacity: 0.58;
}

body.page-inner:not(.home-page):not(.admin-body)::after {
    background:
        linear-gradient(
            90deg,
            rgba(3, 7, 18, 0.92) 0%,
            rgba(3, 7, 18, 0.72) 40%,
            rgba(3, 7, 18, 0.72) 60%,
            rgba(3, 7, 18, 0.92) 100%
        ),
        linear-gradient(
            180deg,
            rgba(3, 7, 18, 0.12) 0%,
            rgba(3, 7, 18, 0.42) 50%,
            rgba(3, 7, 18, 0.94) 100%
        );
}



a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

main {
    overflow-x: clip;
}

.container {
    width: min(1440px, calc(100% - 2rem));
    margin: 0 auto;
}

.section-block {
    padding: clamp(2.25rem, 4vw, 3.5rem) 0;
}

body.page-inner .section-block {
    padding: clamp(2rem, 3.5vw, 3rem) 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    border: 1px solid transparent;
    background: transparent;
    padding: 0.75rem 1.2rem;
    min-height: 44px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #e8f4ff;
    cursor: pointer;
    border-radius: var(--radius-btn);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease,
        background 0.2s ease;
}

.btn:focus-visible {
    outline: 2px solid rgba(0, 212, 255, 0.65);
    outline-offset: 2px;
}

.btn-primary {
    color: #fff;
    background: rgba(12, 25, 54, 0.72);
    border-color: rgba(34, 211, 238, 0.36);
    box-shadow:
        0 0 18px rgba(25, 198, 255, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.btn-primary:hover {
    transform: translateY(-1px);
    border-color: rgba(34, 211, 238, 0.58);
    background: rgba(25, 198, 255, 0.14);
    box-shadow:
        0 0 28px rgba(25, 198, 255, 0.24),
        0 8px 22px rgba(0, 0, 0, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.btn-cta-gradient {
    color: #fff;
    background: var(--gradient-brand);
    border-color: rgba(255, 255, 255, 0.28);
    box-shadow:
        0 0 24px rgba(25, 198, 255, 0.24),
        0 0 34px rgba(255, 42, 163, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.btn-cta-gradient:hover {
    transform: translateY(-1px);
    box-shadow:
        0 0 34px rgba(25, 198, 255, 0.3),
        0 0 44px rgba(255, 42, 163, 0.28),
        0 8px 24px rgba(0, 0, 0, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.btn-cta-large {
    padding: 0.82rem 1.65rem;
    min-height: 50px;
    font-size: 0.86rem;
}

.btn-full {
    width: 100%;
}

.text-gradient {
    background: linear-gradient(96deg, var(--cyan) 0%, var(--blue) 27%, var(--violet) 57%, var(--magenta) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Sdílený glass panel — karty a panely na veřejných stránkách */
.glass-card,
.info-card,
.process-card,
.model-card,
.operator-card,
.contact-aside,
.contact-form-panel,
.cta-inline-panel,
.about-servisak-panel,
.footer-cta,
.tariff-card,
.tariff-filter-block,
.tariff-bottom-cta-panel,
.tariff-how-steps li {
    background:
        linear-gradient(155deg, var(--panel-2), rgba(4, 10, 27, 0.88)),
        var(--panel);
    backdrop-filter: blur(20px) saturate(1.15);
    -webkit-backdrop-filter: blur(20px) saturate(1.15);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-panel);
}

.btn-footer-cta {
    width: 100%;
    justify-content: center;
    margin-top: 0.75rem;
    background: transparent;
    color: var(--cyan);
    border: 1px solid rgba(0, 212, 255, 0.55);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.12);
}

.btn-footer-cta:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 28px var(--cyan-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.32);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-secondary:hover {
    border-color: rgba(0, 212, 255, 0.55);
    background: rgba(0, 212, 255, 0.14);
    transform: translateY(-1px);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    isolation: isolate;
    background:
        linear-gradient(180deg, rgba(4, 8, 20, 0.9), rgba(4, 8, 20, 0.62)),
        var(--header-glass);
    backdrop-filter: blur(22px) saturate(1.25);
    -webkit-backdrop-filter: blur(22px) saturate(1.25);
    border-bottom: 1px solid rgba(96, 165, 250, 0.16);
    box-shadow:
        0 14px 46px rgba(0, 0, 0, 0.42),
        inset 0 1px 0 rgba(255, 255, 255, 0.055);
}

.header-inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    min-height: 66px;
    gap: 0.55rem 1.35rem;
}

.header-actions {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.6rem;
}

@media (max-width: 1200px) {
    .site-nav {
        gap: 0.55rem 0.85rem;
    }

    .btn-header-cta-primary {
        padding: 0.58rem 0.85rem;
        max-width: 12.5rem;
    }
}

/* Header logo */
.site-logo--wordmark {
    display: inline-flex;
    align-items: center;
    gap: 0.54rem;
    text-decoration: none;
    line-height: 1;
    padding: 0.2rem 0;
}

.site-logo:focus-visible {
    outline: 2px solid rgba(0, 212, 255, 0.55);
    outline-offset: 4px;
    border-radius: var(--radius-btn);
}

.site-logo-mark {
    display: inline-flex;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 14px rgba(25, 198, 255, 0.28));
}

.site-logo-icon {
    display: block;
    width: 100%;
    height: 100%;
}

.site-logo-text {
    color: #fff;
    font-size: clamp(1.24rem, 0.9vw + 0.98rem, 1.52rem);
    font-weight: 850;
    letter-spacing: -0.035em;
    text-shadow: 0 0 18px rgba(255, 255, 255, 0.08);
}

@media (min-width: 981px) {
    .site-nav {
        flex-wrap: nowrap;
        gap: 0.5rem 0.82rem;
        justify-content: center;
        align-items: center;
    }

    .site-nav a {
        white-space: nowrap;
        font-size: clamp(0.9rem, 0.5vw + 0.72rem, 1rem);
    }
}

.btn-header-cta-primary {
    padding: 0.58rem 1.06rem;
    min-height: 40px;
    font-size: 0.76rem;
    color: #fff;
    background: var(--gradient-brand);
    border-color: rgba(255, 255, 255, 0.24);
    border-radius: 15px;
    box-shadow:
        0 0 22px rgba(25, 198, 255, 0.24),
        0 0 26px rgba(255, 42, 163, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn-header-cta-primary.is-current {
    box-shadow:
        0 0 22px rgba(0, 212, 255, 0.35),
        0 0 0 1px rgba(0, 212, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.btn-header-cta-primary:hover,
.btn-header-cta-primary:focus-visible {
    transform: translateY(-1px);
    box-shadow:
        0 0 30px rgba(25, 198, 255, 0.32),
        0 0 36px rgba(255, 42, 163, 0.3),
        0 8px 22px rgba(0, 0, 0, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.btn-header-cta-secondary {
    padding: 0.56rem 0.92rem;
    min-height: 40px;
    font-size: 0.76rem;
    color: rgba(248, 250, 252, 0.9);
    background: rgba(9, 18, 39, 0.68);
    border-color: rgba(148, 163, 184, 0.22);
    border-radius: 15px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-header-cta-secondary:hover,
.btn-header-cta-secondary:focus-visible {
    color: #fff;
    border-color: rgba(25, 198, 255, 0.42);
    background: rgba(25, 198, 255, 0.1);
    box-shadow:
        0 0 22px rgba(25, 198, 255, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.btn-header-admin {
    padding: 0.42rem 0.75rem;
    min-height: 34px;
    font-size: 0.7rem;
    color: rgba(232, 241, 255, 0.88);
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.05);
}

.btn-header-admin:hover {
    color: #fff;
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(0, 212, 255, 0.12);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border: 1px solid rgba(0, 212, 255, 0.65);
    border-radius: var(--radius-tech);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
}

.brand-text {
    font-size: 1.4rem;
}

.site-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.95rem 1.4rem;
}

.site-nav a {
    color: rgba(248, 250, 252, 0.72);
    font-size: 0.98rem;
    font-weight: 600;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: #ffffff;
    text-shadow: 0 0 18px rgba(25, 198, 255, 0.18);
}

.site-nav a.is-active {
    color: var(--cyan);
    text-shadow: 0 0 18px rgba(0, 212, 255, 0.25);
}

/* Mobilní menu (hamburger) */
.site-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    margin: 0;
    border: 1px solid rgba(148, 163, 184, 0.28);
    border-radius: 12px;
    background: rgba(9, 18, 39, 0.72);
    color: #fff;
    cursor: pointer;
    flex-shrink: 0;
    touch-action: manipulation;
}

.site-nav-toggle__bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: rgba(248, 250, 252, 0.92);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.site-nav-toggle:hover,
.site-nav-toggle:focus-visible {
    border-color: rgba(25, 198, 255, 0.45);
    background: rgba(25, 198, 255, 0.1);
    outline: none;
    box-shadow: 0 0 18px rgba(25, 198, 255, 0.12);
}

.site-mobile-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 60;
    border-bottom: 1px solid rgba(96, 165, 250, 0.2);
    background:
        linear-gradient(180deg, rgba(6, 14, 32, 0.98), rgba(4, 10, 24, 0.99)),
        var(--header-glass);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.site-mobile-nav[hidden] {
    display: none !important;
}

.site-mobile-nav__inner {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.85rem clamp(1rem, 4vw, 1.5rem) 1.1rem;
}

.site-mobile-nav__inner a {
    display: block;
    padding: 0.72rem 0.35rem;
    color: rgba(248, 250, 252, 0.88);
    font-size: 1rem;
    font-weight: 600;
    border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.site-mobile-nav__inner a:hover,
.site-mobile-nav__inner a:focus-visible {
    color: #fff;
}

.site-mobile-nav__cta {
    margin-top: 0.35rem;
    padding: 0.85rem 1rem !important;
    text-align: center;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    background: var(--gradient-brand);
    color: #fff !important;
    box-shadow: 0 0 22px rgba(25, 198, 255, 0.2);
}

body.site-nav-open {
    overflow: hidden;
}

/* Dropdown u CTA „Tarify pro jednotlivce“ — desktop hover / focus-within; panel vpravo */
.header-actions .nav-item--has-dropdown {
    position: relative;
}

.header-actions .nav-item--has-dropdown > a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.header-actions .nav-item--has-dropdown .nav-dropdown-panel {
    position: absolute;
    left: auto;
    right: 0;
    top: 100%;
    min-width: 15.5rem;
    padding: 0.45rem 0;
    margin-top: 0;
    border-radius: var(--radius-tech);
    border: 1px solid rgba(0, 180, 255, 0.22);
    background: linear-gradient(180deg, rgba(10, 28, 58, 0.98), rgba(4, 14, 36, 0.99)),
        var(--header-bg-logo, #03102a);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(0, 212, 255, 0.06);
    z-index: 80;
    display: grid;
    gap: 0.1rem;
}

@media (min-width: 981px) {
    .header-actions .nav-item--has-dropdown::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        height: 0.65rem;
        z-index: 79;
    }

    .header-actions .nav-item--has-dropdown .nav-dropdown-panel {
        padding-top: 0.45rem;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-4px);
        transition:
            opacity 0.15s ease,
            visibility 0.15s ease,
            transform 0.15s ease;
    }

    .header-actions .nav-item--has-dropdown:hover .nav-dropdown-panel,
    .header-actions .nav-item--has-dropdown:focus-within .nav-dropdown-panel {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }
}

.header-actions .nav-item--has-dropdown .nav-dropdown-panel a {
    display: block;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.88);
    border-radius: 4px;
    margin: 0 0.35rem;
}

.header-actions .nav-item--has-dropdown .nav-dropdown-panel a:hover,
.header-actions .nav-item--has-dropdown .nav-dropdown-panel a:focus-visible {
    color: #fff;
    background: rgba(0, 212, 255, 0.1);
    outline: none;
}

.header-actions .nav-item--has-dropdown .nav-dropdown-panel a.is-active {
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.08);
}

.site-footer {
    margin-top: 2.75rem;
    border-top: 1px solid rgba(96, 165, 250, 0.2);
    background:
        linear-gradient(180deg, rgba(4, 10, 24, 0.94), rgba(2, 6, 14, 0.98));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.footer-top {
    padding: 2.75rem 0 2rem;
    display: grid;
    grid-template-columns: 1.35fr 0.95fr 0.95fr 1fr 1.15fr;
    gap: 1.75rem;
    align-items: start;
}

.footer-brand p,
.footer-claim {
    margin-top: 0.85rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

.footer-cta {
    padding: 1.25rem 1.35rem;
    border-color: var(--border-strong);
}

.footer-cta-title {
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    margin-bottom: 0.35rem;
}

.footer-cta-text {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.45;
}

.footer-links h3,
.footer-contact h3 {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    color: var(--cyan);
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    display: grid;
    gap: 0.45rem;
}

.footer-links a,
.footer-contact a {
    color: var(--text-muted);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--cyan);
}

.brand-footer.site-logo--wordmark .site-logo-text {
    font-size: 1.22rem;
}

.brand-footer.site-logo--wordmark .site-logo-mark {
    width: 28px;
    height: 28px;
}

.footer-bottom {
    border-top: 1px solid rgba(0, 198, 255, 0.12);
    padding: 1rem 0 1.6rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: var(--text-muted);
}

.footer-legal {
    display: flex;
    gap: 1rem;
}

.footer-bottom-right {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.footer-admin-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: rgba(224, 242, 255, 0.55);
    background: rgba(0, 212, 255, 0.04);
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.footer-admin-link:hover,
.footer-admin-link:focus-visible {
    color: rgba(224, 242, 255, 0.88);
    border-color: rgba(0, 212, 255, 0.45);
    background: rgba(0, 212, 255, 0.1);
    outline: none;
}

.footer-admin-link-icon {
    width: 13px;
    height: 13px;
    fill: currentColor;
}