/* RESET */

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: #E1E5F2;
    color: #022B3A;
    line-height: 1.6;
    overflow-x: hidden;
}

/* NAVIGACIJA */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 68px;
    background-color: #022B3A;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 56px;
    border-bottom: 2px solid #1F7A8C;
    z-index: 200;
}

.logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 22px;
    font-weight: 600;
    color: #FFFFFF;
}

.logo span {
    color: #1F7A8C;
}

.veze {
    list-style: none;
    display: flex;
    gap: 36px;
}

.veze a {
    font-size: 14px;
    font-weight: 600;
    color: #BFDBF7;
    text-decoration: none;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.2s;
}

.veze a:hover {
    color: #1F7A8C;
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.burger span {
    display: block;
    width: 26px;
    height: 2px;
    background-color: #BFDBF7;
    border-radius: 2px;
    transition: background-color 0.2s;
}

.burger:hover span {
    background-color: #1F7A8C;
}

/* HERO */

.uvod {
    background-color: #022B3A;
    background-image: radial-gradient(ellipse at 80% 20%, rgba(31, 200, 210, 0.22) 0%, transparent 55%),
        radial-gradient(ellipse at 10% 80%, rgba(31, 122, 140, 0.25) 0%, transparent 50%),
        linear-gradient(160deg, #033d52 0%, #022B3A 45%, #011820 100%);
    min-height: 100vh;
    padding-top: 68px;
    display: flex;
    align-items: center;
}

.uvod-sadrzaj {
    max-width: 760px;
    margin: 0 auto;
    padding: 96px 56px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    width: 100%;
}

.uvod-sadrzaj h1 {
    font-size: 84px;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1;
    letter-spacing: -3px;
}

.istak {
    color: #1F7A8C;
}

.podnaslov {
    font-size: 18px;
    color: #BFDBF7;
    line-height: 1.8;
    max-width: 600px;
}

.slogan {
    border-left: 3px solid #1F7A8C;
    padding-left: 18px;
}

.slogan span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    color: #1F7A8C;
    font-style: italic;
}

.bedz {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 600;
    color: #1F7A8C;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 5px 14px;
    border: 1px solid #1F7A8C;
    border-radius: 4px;
    width: fit-content;
}

/* GUMBI */

.gumb {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.2s, transform 0.15s;
}

.gumb:hover {
    opacity: 0.82;
    transform: translateY(-2px);
}

.gumb:active {
    transform: translateY(0);
}

.g-glav {
    background-color: #1F7A8C;
    color: #FFFFFF;
}

.g-rub {
    background-color: transparent;
    color: #1F7A8C;
    border: 2px solid #1F7A8C;
}

.g-tam {
    background-color: #022B3A;
    color: #BFDBF7;
}

.g-mali {
    font-size: 11px;
    padding: 7px 14px;
    background-color: rgba(31, 122, 140, 0.15);
    color: #BFDBF7;
    border: 1px solid rgba(31, 122, 140, 0.35);
}

/* OKVIR */

.okvir {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 56px;
}

/* ZAJEDNIČKI ELEMENTI */

.oznaka {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 600;
    color: #1F7A8C;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 4px 12px;
    border: 1px solid #1F7A8C;
    border-radius: 4px;
    margin-bottom: 14px;
}

.o-sv {
    color: #BFDBF7;
    border-color: #BFDBF7;
}

.bijelo {
    color: #FFFFFF;
}

.sivi {
    color: #BFDBF7;
}

.sec-zaglavlje {
    text-align: center;
    margin-bottom: 64px;
}

.sec-zaglavlje h2 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 14px;
}

.sec-opis {
    font-size: 19px;
    color: #1F7A8C;
    max-width: 440px;
    margin: 0 auto;
    line-height: 1.7;
}

/* SEKCIJE */

.bijela {
    background-color: #FFFFFF;
    padding: 96px 0;
}

.tamna {
    background-color: #022B3A;
    padding: 96px 0;
}

.mrak {
    background-color: #011822;
    padding: 96px 0;
}

/* DEFINICIJA */

.def-mreza {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
    margin-bottom: 88px;
}

.def-tekst h2 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 24px;
    margin-top: 8px;
}

.def-tekst p {
    font-size: 18px;
    color: #444;
    margin-bottom: 14px;
    line-height: 1.8;
    text-align: justify;
    text-justify: inter-word;
}

.def-tekst strong {
    color: #1F7A8C;
}

.def-citat {
    background-color: #F4F7FC;
    border-radius: 16px;
    padding: 40px 36px;
    border-left: 4px solid #1F7A8C;
}

.citat-tekst {
    font-size: 19px;
    line-height: 1.75;
    color: #022B3A;
    font-style: italic;
    margin-bottom: 20px;
    text-align: justify;
    text-justify: inter-word;
}

.citat-izvor {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: #1F7A8C;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* RAZLOZI */

.razl-zaglavlje {
    text-align: center;
    margin-bottom: 40px;
}

.razl-zaglavlje h2 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1px;
    margin-top: 8px;
}

.razl-mreza {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.kartica-r {
    background-color: #F4F7FC;
    border-radius: 16px;
    padding: 40px 32px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.kartica-r:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(2, 43, 58, 0.1);
}

.r-br {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 600;
    color: #1F7A8C;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 16px;
}

.kartica-r h3 {
    font-size: 22px;
    font-weight: 700;
    color: #022B3A;
    margin-bottom: 12px;
}

.kartica-r p {
    font-size: 17px;
    color: #555;
    line-height: 1.7;
    text-align: justify;
    text-justify: inter-word;
}

/* ANATOMIJA */

.anat-mreza {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 88px;
    align-items: center;
}

.anat-tekst h2 {
    font-size: 52px;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 16px;
    margin-top: 8px;
}

.anat-tekst p {
    font-size: 18px;
    color: #BFDBF7;
    margin-bottom: 36px;
    line-height: 1.7;
    text-align: justify;
    text-justify: inter-word;
}

.dijelovi {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.dio {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background-color: rgba(31, 122, 140, 0.1);
    border-radius: 10px;
    padding: 18px;
    border-left: 3px solid #1F7A8C;
}

.d-kod {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: #1F7A8C;
    background-color: rgba(31, 122, 140, 0.18);
    padding: 6px 12px;
    border-radius: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

.dio p {
    font-size: 16px;
    color: #BFDBF7;
    margin: 0;
    line-height: 1.65;
    text-align: justify;
    text-justify: inter-word;
}

.dio strong {
    color: #FFFFFF;
}

.anat-viz {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 26px;
    background-color: rgba(31, 122, 140, 0.1);
    border: 2px solid #1F7A8C;
    border-radius: 16px;
    padding: 36px 32px;
    text-align: center;
}

.f-dolar {
    color: #1F7A8C;
    font-weight: 700;
}

.f-zagr {
    color: #E1E5F2;
}

.f-sel {
    color: #4ecdc4;
}

.f-toc {
    color: #E1E5F2;
}

.f-akc {
    color: #FFFFFF;
    font-weight: 600;
}

.stat {
    display: flex;
    align-items: center;
    gap: 24px;
    background-color: rgba(31, 122, 140, 0.1);
    border-radius: 14px;
    padding: 28px 32px;
    border-left: 4px solid #1F7A8C;
}

.posto {
    font-family: 'JetBrains Mono', monospace;
    font-size: 52px;
    font-weight: 800;
    color: #1F7A8C;
    line-height: 1;
    flex-shrink: 0;
}

.posto-zn {
    font-size: 36px;
}

.stat p {
    font-size: 15px;
    color: #BFDBF7;
    line-height: 1.6;
    margin: 0;
    opacity: 0.85;
}

/* SELEKTORI */

.sel-mreza {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.kartica-s {
    background-color: #FFFFFF;
    border-radius: 14px;
    padding: 24px 28px;
    cursor: pointer;
    border-top: 3px solid #BFDBF7;
    box-shadow: 0 2px 16px rgba(2, 43, 58, 0.06);
    transition: transform 0.2s, box-shadow 0.2s, border-top-color 0.2s;
    display: grid;
    grid-template-columns: 170px 1fr;
    grid-template-rows: auto 1fr;
    column-gap: 24px;
    align-items: start;
}

.kartica-s:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(2, 43, 58, 0.12);
    border-top-color: #1F7A8C;
}

.s-br {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: #1F7A8C;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
    opacity: 0.6;
    grid-column: 1;
    grid-row: 1;
}

.s-kod {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    color: #1F7A8C;
    background-color: #EEF6FF;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 0;
    line-height: 1.4;
    word-break: break-all;
    grid-column: 1;
    grid-row: 2;
}

.s-info {
    grid-column: 2;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.s-info h3 {
    font-size: 17px;
    font-weight: 700;
    color: #022B3A;
    margin-bottom: 8px;
}

.s-info p {
    font-size: 15px;
    color: #555;
    line-height: 1.65;
    text-align: justify;
    text-justify: inter-word;
}

/* DEMO  */

.demo-mreza {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}

.kartica-sira {
    grid-column: 1 / -1;
}

.kartica-d {
    background-color: #011218;
    border-radius: 16px;
    padding: 36px;
    border: 1px solid rgba(31, 122, 140, 0.25);
}

.d-zaglavlje {
    margin-bottom: 24px;
}

.metoda {
    font-family: 'JetBrains Mono', monospace;
    font-size: 20px;
    font-weight: 600;
    color: #1F7A8C;
    display: block;
    margin-bottom: 6px;
}

.d-zaglavlje p {
    font-size: 15px;
    color: #BFDBF7;
    opacity: 0.6;
}

.prikaz {
    background-color: #FFFFFF;
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
    min-height: 110px;
}

.kutija {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stavak {
    font-size: 16px;
    color: #022B3A;
    padding: 12px 16px;
    background-color: #E1E5F2;
    border-radius: 7px;
    border-left: 3px solid #1F7A8C;
    text-align: justify;
    text-justify: inter-word;
}

.kut-css {
    background-color: #E1E5F2;
    border-radius: 8px;
    padding: 36px;
    text-align: center;
    transition: background-color 0.3s;
}

.kut-css p {
    font-size: 19px;
    font-weight: 600;
    color: #022B3A;
    transition: color 0.3s;
}

.d-gumbi {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.lista {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stavka {
    font-size: 16px;
    color: #022B3A;
    padding: 10px 18px;
    background-color: #E1E5F2;
    border-radius: 6px;
    border-left: 3px solid #BFDBF7;
    transition: background-color 0.25s, border-color 0.25s, color 0.25s;
}

/* MOGUĆNOSTI */

.zn-mreza {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 44px;
}

.kartica-z {
    background-color: #F4F7FC;
    border-radius: 16px;
    padding: 40px 36px;
    border-left: 4px solid #1F7A8C;
    transition: transform 0.2s, box-shadow 0.2s;
}

.kartica-z:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 44px rgba(2, 43, 58, 0.1);
}

.kartica-z h3 {
    font-size: 21px;
    font-weight: 700;
    color: #022B3A;
    margin-bottom: 14px;
}

.kartica-z p {
    font-size: 17px;
    color: #555;
    line-height: 1.75;
    text-align: justify;
    text-justify: inter-word;
}

.zn-gumbi {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* PODNOŽJE */

.podnozje {
    background-color: #022B3A;
    padding: 64px 0 40px;
    border-top: 1px solid rgba(31, 122, 140, 0.3);
}

.pod-gornji {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(191, 219, 247, 0.1);
    margin-bottom: 32px;
}

.pod-brand {
    max-width: 320px;
}

.pod-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 28px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 14px;
}

.pod-logo span {
    color: #1F7A8C;
}

.pod-opis {
    font-size: 14px;
    color: #BFDBF7;
    line-height: 1.7;
    opacity: 0.6;
}

.pod-nav h4 {
    font-size: 11px;
    font-weight: 600;
    color: #1F7A8C;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.pod-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pod-nav a {
    font-size: 14px;
    color: #BFDBF7;
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.2s, color 0.2s;
}

.pod-nav a:hover {
    opacity: 1;
    color: #1F7A8C;
}

.pod-donji {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.pod-slogan {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: #1F7A8C;
    font-style: italic;
}

.pod-copy {
    font-size: 12px;
    color: #BFDBF7;
    opacity: 0.35;
    letter-spacing: 0.5px;
}

/* RESPONZIVNI STILOVI */

@media (max-width: 1200px) {
    .nav {
        padding: 0 40px;
    }

    .okvir {
        padding: 0 40px;
    }

    .uvod-sadrzaj {
        padding: 88px 40px;
    }
}

/* 900px — Tablet */

@media (max-width: 900px) {
    .nav {
        padding: 0 28px;
    }

    .okvir {
        padding: 0 28px;
    }

    .uvod-sadrzaj {
        padding: 72px 28px;
    }

    .uvod-sadrzaj h1 {
        font-size: 62px;
    }

    .sec-zaglavlje h2 {
        font-size: 38px;
    }

    .def-tekst h2,
    .razl-zaglavlje h2 {
        font-size: 40px;
    }

    .anat-tekst h2 {
        font-size: 42px;
    }

    .def-mreza {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .razl-mreza {
        grid-template-columns: 1fr 1fr;
    }

    .anat-mreza {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .kartica-s {
        grid-template-columns: 148px 1fr;
    }

    .pod-gornji {
        gap: 32px;
    }
}

/* 768px — Mobilni izbornik */

@media (max-width: 768px) {
    .nav {
        padding: 0 20px;
    }

    .okvir {
        padding: 0 20px;
    }

    .uvod-sadrzaj h1 {
        font-size: 52px;
    }

    .bijela,
    .tamna,
    .mrak {
        padding: 72px 0;
    }

    .sec-zaglavlje {
        margin-bottom: 48px;
    }

    .veze {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background-color: #022B3A;
        flex-direction: column;
        gap: 0;
        border-bottom: 2px solid #1F7A8C;
        padding: 8px 0;
    }

    .veze.otvoreno {
        display: flex;
    }

    .veze li a {
        display: block;
        padding: 14px 28px;
        font-size: 14px;
        border-bottom: 1px solid rgba(31, 122, 140, 0.15);
    }

    .burger {
        display: flex;
    }

    .sel-mreza {
        grid-template-columns: 1fr;
    }

    .demo-mreza {
        grid-template-columns: 1fr;
    }

    .kartica-sira {
        grid-column: 1;
    }
}

/* 600px — Uski tablet */

@media (max-width: 600px) {
    .uvod-sadrzaj h1 {
        font-size: 46px;
        letter-spacing: -2px;
    }

    .podnaslov {
        font-size: 15px;
    }

    .sec-zaglavlje h2 {
        font-size: 28px;
    }

    .def-tekst h2,
    .razl-zaglavlje h2 {
        font-size: 30px;
    }

    .anat-tekst h2 {
        font-size: 32px;
    }

    .razl-mreza {
        grid-template-columns: 1fr;
    }

    .zn-mreza {
        grid-template-columns: 1fr;
    }

    .bijela,
    .tamna,
    .mrak {
        padding: 60px 0;
    }

    .formula {
        font-size: 20px;
        padding: 28px 20px;
    }
}

/* 480px — Mali mobitel */

@media (max-width: 480px) {
    .nav {
        padding: 0 16px;
    }

    .okvir {
        padding: 0 16px;
    }

    .uvod-sadrzaj {
        padding: 56px 16px;
    }

    .uvod-sadrzaj h1 {
        font-size: 38px;
        letter-spacing: -1.5px;
    }

    .bijela,
    .tamna,
    .mrak {
        padding: 52px 0;
    }

    .sec-zaglavlje {
        margin-bottom: 40px;
    }

    .kartica-s {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .s-br {
        grid-column: 1;
        grid-row: 1;
    }

    .s-kod {
        grid-column: 1;
        grid-row: 2;
        margin-bottom: 14px;
    }

    .s-info {
        grid-column: 1;
        grid-row: 3;
    }

    .kartica-d {
        padding: 22px;
    }

    .formula {
        font-size: 18px;
        padding: 24px 16px;
    }

    .posto {
        font-size: 60px;
    }

    .pod-gornji {
        flex-direction: column;
        gap: 40px;
    }

    .pod-donji {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

/* 320px — Micro ekrani */

@media (max-width: 320px) {
    .nav {
        padding: 0 12px;
    }

    .okvir {
        padding: 0 12px;
    }

    .uvod-sadrzaj {
        padding: 48px 12px;
    }

    .uvod-sadrzaj h1 {
        font-size: 30px;
        letter-spacing: -1px;
    }

    .gumb {
        font-size: 12px;
        padding: 10px 16px;
    }

    .metoda {
        font-size: 16px;
    }

    .formula {
        font-size: 15px;
        padding: 18px 12px;
    }
}