/* ========== ZÁKLADNÍ STYLY ========== */
html, body {
    margin: 0;
    padding: 0;
    font-family: 'Azeret Mono', monospace;
    background: #fff;
    color: #111;
    /* scroll-behavior: smooth; JS ho bude řídit */
    font-size: 19px;
}

section[id] {
    scroll-margin-top: 100px;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.15s;
}

nav a:hover {
    color: #26b34a;
}

ul { padding-left: 22px; }
b, strong { font-weight: bold; }
.red { color: #e00; }
.green { color: #26b34a; }
.blue { color: #356aff; }

h1, h2, h3 {
    font-family: 'Azeret Mono', monospace;
    margin: 0 0 22px 0;
    font-weight: 700;
}

/* Globální nastavení H1 pro desktop (a jako základ) */
h1 {
    font-size: clamp(30px, 3.5vw, 48px);
    line-height: 1.2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
/* Zabrání zalomení textu uvnitř každého spanu */
h1 span {
    white-space: nowrap;
}

p { margin: 0 0 1.1em 0; }

.section-inner {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 60px 20px;
    box-sizing: border-box;
}

header + .section-inner {
    /* Odstraněn padding-bottom: 0, aby se spoléhalo na padding v .section-inner */
}

.section-divider {
    border: none;
    border-top: 3px solid #222;
    width: 100%;
    max-width: 1140px;
    margin: 20px auto;
    opacity: 0.93;
}

header {
    width: 100%;
    padding: 25px 0;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #eee;
}

.header-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 34px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.4em;
    letter-spacing: 2px;
}

nav ul {
    display: flex;
    gap: 36px;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 1em;
}

.hamburger-icon {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger-icon span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: #111;
    margin: 6px 0;
    transition: transform 0.3s, opacity 0.3s;
}

.hamburger-icon.is-active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}
.hamburger-icon.is-active span:nth-child(2) {
    opacity: 0;
}
.hamburger-icon.is-active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.uvod {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}
.uvod-right img {
    width: 320px;
    max-width: 40vw;
    height: auto;
    display: block;
}

.naucim > h2,
.reference h2,
.lektor > h2 {
    margin-bottom: 40px;
    margin-top: 0;
    text-align: center;
}

/* === NOVÉ STYLY PRO SEKCI NAUCIM (DESKTOP) === */
.naucim-desktop-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    justify-content: center;
    align-items: flex-start;
    padding: 0 20px;
    margin-bottom: 60px;
}
.naucim-desktop-layout:last-of-type {
    margin-bottom: 0;
}
.naucim-column {
    flex: 1 1 0;
    min-width: 210px;
}
.naucim-desktop-layout h3 {
    font-size: 1.2em;
    margin-bottom: 22px;
    text-align: center;
}
.naucim-desktop-layout .naucim-column > ul {
    margin-top: 0;
}
/* === KONEC NOVÝCH STYLŮ PRO SEKCI NAUCIM (DESKTOP) === */

/* Skryje mobilní layout na desktopu */
.naucim-mobile-layout {
    display: none;
}

.accordion-item {
    margin-bottom: 30px;
}
.accordion-item summary {
    list-style: none;
}
.accordion-item summary::-webkit-details-marker {
    display: none;
}
.accordion-item .naucim-grid {
    margin-top: 20px;
}

/* Reference, lektor, kontakt, footer */
.reference-logos {
    display: flex;
    flex-direction: column;
    gap: 60px;
}
.logo-block {
    display: flex;
    align-items: center;
    gap: 60px;
    height: 160px;
}
.logo-block img {
    flex: 0 0 220px;
    width: 220px;
    max-height: 140px;
    object-fit: contain;
}
.logo-text {
    flex-grow: 1;
    font-size: 1.1em;
    line-height: 1.5;
}

.lektor-flex {
    display: flex;
    align-items: flex-start;
    gap: 50px;
    justify-content: center;
}
.lektor-info {
    flex: 2 1 0;
    min-width: 250px;
}
.lektor-img img {
    max-width: 200px;
    width: 100%;
    border: 5px solid #eee;
    border-radius: 9px;
    box-shadow: 0 3px 14px #0002;
}

.kontakt h2 { font-size: clamp(28px, 3vw, 42px); }
.kontakt div {
    margin-top: 20px;
    font-size: 1.2em;
}
.kontakt b { display: inline-block; margin-top: 8px; }

footer {
    font-size: 1.01em;
    text-align: left;
    padding: 16px 0;
    background: #fff;
    letter-spacing: 1px;
    color: #333;
}
.footer-container {
    padding-top: 20px;
    padding-bottom: 40px;
}

/* ========== MOBILNÍ VERZE ========== */
@media (max-width: 1024px) {

    .header-container {
        padding: 0 5vw;
    }

    .uvod h1 {
        font-size: clamp(18px, 5vw, 30px) !important;
        text-align: left;
        align-items: flex-start;
    }
    .uvod h1 span {
        white-space: nowrap;
    }
    .hamburger-icon {
        display: block;
    }
    nav {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #111;
        overflow: hidden;
        max-height: 0;
        transition: max-height 0.4s ease-in-out;
    }
    nav.is-open {
        max-height: 500px;
    }
    nav ul {
        flex-direction: column;
        padding: 20px 0;
        align-items: center;
        gap: 0;
    }
    nav ul a {
        display: block;
        padding: 15px 0;
        color: #fff;
        font-size: 1.2em;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #333;
    }
    nav ul li:first-child a {
        border-top: 1px solid #333;
    }

    .logo {
        z-index: 2;
    }

    /* Původně skryto */
    .uvod-right {
        display: none;
    }
    .uvod {
        justify-content: flex-start;
        text-align: left;
        min-height: auto;
        padding-bottom: 30px;
        gap: 30px;
    }

    /* Sekce NAUCIM pro mobily */
    .naucim-desktop-layout {
        display: none;
    }
    .naucim-mobile-layout {
        display: block;
    }
    .accordion-item {
        border: 1px solid #e0e0e0;
        border-radius: 9px;
        margin-bottom: 15px;
    }
    .accordion-item summary {
        pointer-events: auto;
        cursor: pointer;
        padding: 20px;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .accordion-item summary::after {
        content: '+';
        font-size: 1.8em;
        flex-shrink: 0;
        margin-left: 20px;
        transition: transform 0.3s;
    }
    .accordion-item[open] > summary::after {
        content: '−';
        transform: rotate(180deg);
    }
    .accordion-item .naucim-grid {
        padding: 0 20px 20px 20px;
        margin-top: 0;
        flex-direction: column;
        gap: 20px;
    }
    .naucim-mobile-layout .naucim-grid > div {
        width: 100%;
        min-width: unset;
        text-align: left;
    }
    .naucim-mobile-layout .naucim-grid > div h3 {
        display: block;
        margin-bottom: 15px;
        text-align: left;
    }

    .reference-logos {
        gap: 10px;
    }
    .logo-block {
        flex-direction: column;
        align-items: center;
        gap: 0;
        border: 1px solid #e0e0e0;
        border-radius: 9px;
        padding: 15px;
        cursor: pointer;
        position: relative;
        height: auto;
    }
    .logo-block::after {
        content: '+';
        position: absolute;
        top: 15px;
        right: 15px;
        font-size: 1.8em;
        transition: transform 0.3s;
    }
    .logo-block.is-open::after {
        content: '−';
        transform: rotate(180deg);
    }
    .logo-block img {
        margin-bottom: 15px;
    }
    .logo-text {
        font-size: 1em;
        text-align: left;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
    }
    .logo-block.is-open .logo-text {
        max-height: 500px;
    }

    .lektor-flex {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    /* --- NOVÝ BLOK: zobrazení obrázku pod nadpisem na mobilu --- */
    .uvod {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .uvod-right {
        display: block;
        margin-top: 20px;
    }
    .uvod-right img {
        width: 60vw;
        max-width: 300px;
        height: auto;
    }
}

/* ========== DROBNÉ TELEFONNÍ DISPLEJE ========== */
@media (max-width: 375px) {
    h1 {
        font-size: 26px;
        line-height: 1.25;
    }
}