@font-face {
    font-family: 'Exo2S';
    src: url('../fonts/Exo2-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
}
@font-face {
    font-family: 'Exo2E';
    src: url('../fonts/Exo2-ExtraBold.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
}

:root {
    --cyan:   #00cce8;
    --orange: #e87a00;
    --white:  #f0f6ff;
    --text:   #daeaf8;
    --lbl:    #f0f8ff;
    --glow:   #0900ff;
    --line:   rgba(0, 204, 232, 0.55);
}

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

html, body {
    width: 100%;
    min-height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4vh 4vw;
    font-family: 'Exo2S', sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 50% 0%, rgba(9, 0, 255, 0.18), transparent 60%),
        #020716;
}

/* ===== PANEL ===== */
.page {
    position: relative;
    /* margin:auto centruje krátké stránky a zároveň nechá dlouhé stránky
       normálně scrollovat (auto margin se u přetékajícího obsahu chová líp než
       align-items: center, které by ořízlo horní část). */
    margin: auto;
    width: min(1680px, 100%);
    padding: clamp(28px, 5vw, 64px);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 204, 232, 0.35);
    box-shadow:
        0 0 60px rgba(9, 0, 255, 0.35),
        inset 0 0 40px rgba(9, 0, 255, 0.08);
}

/* Glowing rohové závorky jako na hlavní stránce */
.page::before,
.page::after {
    content: '';
    position: absolute;
    width: 38px;
    height: 38px;
    pointer-events: none;
    filter: drop-shadow(0 0 10px var(--glow));
}

.page::before {
    top: -1px;
    left: -1px;
    border-top: 3px solid var(--glow);
    border-left: 3px solid var(--glow);
}

.page::after {
    bottom: -1px;
    right: -1px;
    border-bottom: 3px solid var(--glow);
    border-right: 3px solid var(--glow);
}

/* ===== HLAVIČKA ===== */
.page-head {
    display: flex;
    align-items: center;
    gap: clamp(16px, 3vw, 28px);
    padding-bottom: clamp(18px, 3vw, 28px);
    margin-bottom: clamp(22px, 3.5vw, 34px);
    border-bottom: 1px solid rgba(0, 204, 232, 0.25);
}

.page-icon {
    width: clamp(56px, 9vw, 92px);
    height: auto;
    flex-shrink: 0;
    object-fit: contain;
    filter: brightness(1.8) saturate(1.55) drop-shadow(0 0 18px var(--glow));
    user-select: none;
    -webkit-user-drag: none;
}

.page-title {
    font-family: 'Exo2E', sans-serif;
    font-size: clamp(1.6rem, 4.4vw, 2.9rem);
    line-height: 1;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--white);
    text-shadow: 0 0 12px rgba(9, 0, 255, 0.55);
}

/* ===== OBSAH ===== */
/* Dva sloupce vedle sebe (popis | ukázka), aby se využila šířka monitoru.
   Souhrn (.lead) a full-width sekce jdou přes obě kolony. Na úzkém okně se
   layout složí do jednoho sloupce (viz media query níže). */
.page-body {
    font-size: clamp(1rem, 1.7vw, 1.18rem);
    line-height: 1.62;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(32px, 4vw, 64px);
    row-gap: clamp(26px, 3.5vw, 48px);
    align-items: start;
}

.page-body > .lead,
.page-body > .section--full {
    grid-column: 1 / -1;
}

.page-body p {
    margin: 0 0 1em;
    color: var(--text);
}

.page-body p:last-child {
    margin-bottom: 0;
}

.page-body ol,
.page-body ul {
    margin: 0 0 1em;
    padding-left: 1.4em;
}

.page-body li {
    margin: 0 0 0.45em;
    color: var(--text);
}

.page-body .strong {
    color: var(--lbl);
    font-family: 'Exo2E', sans-serif;
}

.page-body a {
    color: var(--cyan);
    text-decoration: none;
    border-bottom: 1px solid rgba(0, 204, 232, 0.4);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.page-body a:hover {
    color: var(--white);
    border-color: var(--white);
}

/* ===== ZPĚT ===== */
.back {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    margin-bottom: clamp(20px, 3vw, 30px);
    font-family: 'Exo2E', sans-serif;
    font-size: 0.95rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--cyan);
    text-decoration: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

.back:hover {
    color: var(--white);
    transform: translateX(-4px);
}

/* ===== LEAD / SOUHRN (zkratka z hlavní strany) ===== */
.lead {
    margin: 0;
    padding: clamp(12px, 1.8vw, 18px) clamp(14px, 2vw, 22px);
    font-size: clamp(1.04rem, 1.9vw, 1.28rem);
    line-height: 1.5;
    color: var(--white);
    background: rgba(0, 204, 232, 0.05);
    border-left: 3px solid var(--cyan);
}

.lead .strong {
    color: var(--lbl);
    font-family: 'Exo2E', sans-serif;
}

/* ===== SEKCE (Detailní popis / Ukázka) ===== */
/* Bez vlastního marginu — rozestupy řeší grid-gap v .page-body. */
.section {
    margin: 0;
    min-width: 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.7em;
    margin: 0 0 clamp(14px, 2.2vw, 22px);
    font-family: 'Exo2E', sans-serif;
    font-size: clamp(0.95rem, 1.8vw, 1.15rem);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cyan);
    text-shadow: 0 0 10px rgba(0, 204, 232, 0.45);
}

/* Dotahovací linka jako .s-line na hlavní straně */
.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--line) 0%, rgba(0, 204, 232, 0.06) 90%, transparent 100%);
}

/* ===== FAKTA (dt/dd mřížka) ===== */
.facts {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.55em clamp(16px, 2.5vw, 28px);
    margin: 0 0 1em;
}

.facts dt {
    font-family: 'Exo2E', sans-serif;
    color: var(--lbl);
}

.facts dd {
    margin: 0;
    color: var(--text);
}

/* ===== ŠTÍTKY ===== */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em;
    margin: 0.6em 0 0;
    padding: 0;
    list-style: none;
}

.tag {
    display: inline-block;
    padding: 0.32em 0.9em;
    font-size: 0.85em;
    letter-spacing: 0.03em;
    color: var(--cyan);
    background: rgba(0, 204, 232, 0.07);
    border: 1px solid rgba(0, 204, 232, 0.4);
    border-radius: 999px;
}

/* ===== GALERIE UKÁZEK ===== */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
    gap: clamp(12px, 2vw, 18px);
}

.figure {
    margin: 0;
}

.figure img {
    width: 100%;
    display: block;
    object-fit: cover;
    border: 1px solid rgba(0, 204, 232, 0.3);
}

.figure figcaption {
    margin-top: 0.5em;
    font-size: 0.88em;
    color: var(--text);
}

.technika-preview {
    align-self: start;
    padding: clamp(4px, 0.7vw, 8px);
    overflow: hidden;
    background: rgba(9, 0, 255, 0.08);
    border: 1px solid rgba(0, 204, 232, 0.45);
    box-shadow: 0 0 24px rgba(9, 0, 255, 0.28);
}

.technika-preview img {
    aspect-ratio: 1828 / 1218;
    border: 0;
    transition: transform 0.25s ease, filter 0.25s ease;
}

.page-body .technika-preview__link {
    display: block;
    overflow: hidden;
    border: 0;
}

.page-body .technika-preview__link:hover,
.page-body .technika-preview__link:focus-visible {
    border: 0;
}

.technika-preview__link:hover img,
.technika-preview__link:focus-visible img {
    transform: scale(1.025);
    filter: brightness(1.08);
}

.technika-preview__link:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: -2px;
}

/* ===== SLOT — editovatelné místo pro foto / scan / odznak ===== */
.slot {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.45em;
    min-height: 160px;
    margin: 0;
    padding: clamp(16px, 3vw, 26px);
    text-align: center;
    color: var(--cyan);
    background:
        repeating-linear-gradient(45deg, rgba(0, 204, 232, 0.04) 0, rgba(0, 204, 232, 0.04) 10px, transparent 10px, transparent 20px);
    border: 1.5px dashed rgba(0, 204, 232, 0.45);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.slot:hover {
    border-color: var(--cyan);
    background-color: rgba(0, 204, 232, 0.06);
}

.slot::before {
    content: '＋';
    font-size: 1.6em;
    line-height: 1;
    opacity: 0.7;
}

.slot__label {
    font-family: 'Exo2E', sans-serif;
    letter-spacing: 0.04em;
    color: var(--white);
}

.slot__hint {
    font-size: 0.82em;
    color: var(--text);
    opacity: 0.72;
    max-width: 34ch;
}

.slot--wide {
    grid-column: 1 / -1;
}

.slot--tall {
    min-height: 240px;
}

/* ===== KÓDOVÝ BLOK (ukázka kódu / CLI) ===== */
.codeblock {
    margin: 0 0 1em;
    padding: clamp(14px, 2vw, 20px);
    overflow-x: auto;
    font-family: 'Consolas', 'SFMono-Regular', ui-monospace, 'Courier New', monospace;
    font-size: 0.86em;
    line-height: 1.6;
    color: var(--text);
    background: rgba(2, 7, 22, 0.72);
    border: 1px solid rgba(0, 204, 232, 0.25);
    border-left: 3px solid var(--cyan);
    white-space: pre;
    tab-size: 4;
}

.codeblock .c-cmt { color: rgba(0, 204, 232, 0.65); }
.codeblock .c-kw  { color: var(--orange); }
.codeblock .c-str { color: #9be8a0; }

/* ===== KARTA CERTIFIKACE ===== */
.cert-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: clamp(14px, 2.5vw, 24px);
    align-items: center;
    margin: 0 0 clamp(14px, 2vw, 18px);
    padding: clamp(14px, 2.5vw, 22px);
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(0, 204, 232, 0.28);
}

.cert-card:last-child {
    margin-bottom: 0;
}

.cert-card .slot {
    width: clamp(84px, 14vw, 116px);
    min-height: clamp(84px, 14vw, 116px);
    padding: 8px;
}

.cert-card .slot__hint {
    display: none;
}

.cert-card h3 {
    margin: 0 0 0.3em;
    font-family: 'Exo2E', sans-serif;
    font-size: clamp(1rem, 2vw, 1.18rem);
    color: var(--white);
}

.cert-card p {
    margin: 0 0 0.6em;
}

/* ===== TLAČÍTKO (odkaz) ===== */
.page-body .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    margin: 0.5em 0.5em 0 0;
    padding: 0.62em 1.25em;
    font-family: 'Exo2E', sans-serif;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--cyan);
    background: rgba(0, 204, 232, 0.06);
    border: 1px solid var(--cyan);
    transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.page-body .btn:hover {
    color: var(--white);
    background-color: rgba(0, 204, 232, 0.16);
    border-color: var(--white);
    box-shadow: 0 0 18px rgba(0, 204, 232, 0.4);
}

/* ===== NÁPOVĚDA ===== */
.hint {
    margin: 0 0 1em;
    font-size: 0.86em;
    color: var(--text);
    opacity: 0.7;
}

/* ===== ÚZKÉ OBRAZOVKY ===== */
@media (max-width: 760px) {
    body {
        min-height: 100vh;
        display: block;
        padding: 0;
        overflow-x: hidden;
    }

    .page {
        width: 100%;
        min-height: 100vh;
        margin: 0;
        padding: 22px 18px 38px;
        background: rgba(255, 255, 255, 0.02);
        border: 0;
        box-shadow: none;
    }

    .page::before,
    .page::after {
        display: none;
    }

    .back {
        margin-bottom: 20px;
        font-size: 0.82rem;
    }

    .page-head {
        min-height: 58px;
        padding: 0 0 16px;
        margin: 0;
        border-bottom: 0;
    }

    .page-icon {
        display: none;
    }

    .page-title {
        font-size: clamp(1.55rem, 8vw, 2.5rem);
        line-height: 1.06;
        overflow-wrap: anywhere;
    }

    .page > .mobile-nav-shell {
        width: calc(100% + 36px);
        margin-right: -18px;
        margin-left: -18px;
    }

    .page-body {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        row-gap: 28px;
        font-size: clamp(0.96rem, 4vw, 1.08rem);
    }

    .page-body > .lead,
    .page-body > .section--full {
        grid-column: auto;
    }

    .lead {
        padding: 12px 14px;
    }

    .section-title {
        font-size: 0.96rem;
        line-height: 1.25;
    }

    .facts {
        grid-template-columns: 1fr;
        gap: 0.2em;
    }

    .facts dd {
        margin: 0 0 0.7em;
    }

    .cert-card {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .cert-grid {
        grid-template-columns: minmax(0, 1fr) !important;
        gap: 16px !important;
    }

    .demo-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .download-links {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
    }

    .download-link {
        min-width: 0;
        overflow-wrap: anywhere;
    }

    .page-body .btn {
        width: 100%;
        justify-content: center;
        margin-right: 0;
        text-align: center;
    }
}

@media (max-width: 360px) {
    .page {
        padding-right: 14px;
        padding-left: 14px;
    }

    .page > .mobile-nav-shell {
        width: calc(100% + 28px);
        margin-right: -14px;
        margin-left: -14px;
    }
}