/* Osnovni stilovi, promenljive boja i zajednicke klase za celu aplikaciju. */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ===== RESET I OSNOVA ===== */
html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--tekst-primarni);
    background: var(--bg-glavni);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4 {
    line-height: 1.25;
    font-weight: 700;
}

::selection {
    background: var(--primarna-30);
}

/* ===== PROMENLJIVE BOJA ===== */
:root {
    --primarna: #0d9488;
    --primarna-hover: #0b7d73;
    --primarna-tekst: #ffffff;
    --sekundarna: #6b7280;
    --opasna: #ef4444;
    --opasna-hover: #dc2626;
    --uspesna: #22c55e;

    --bg-glavni: #f2f6f5;
    --bg-kartica: #ffffff;
    --bg-zaglavlje: rgba(255, 255, 255, 0.92);
    --bg-muted: #e8efee;

    --tekst-primarni: #17272a;
    --tekst-sekundarni: #5b6f72;
    --tekst-muted: #90a2a5;

    --ivica: #dbe5e4;
    --ivica-svetla: #ecf2f1;


    --primarna-10: #0d94881a;
    --primarna-20: #0d948833;
    --primarna-30: #0d94884d;
    --primarna-40: #0d948866;
    --primarna-50: #0d948880;

    --senka-sm: 0 1px 2px 0 rgb(23 39 42 / 0.05);
    --senka: 0 1px 3px 0 rgb(23 39 42 / 0.08), 0 1px 2px -1px rgb(23 39 42 / 0.06);
    --senka-md: 0 4px 8px -2px rgb(23 39 42 / 0.1), 0 2px 4px -2px rgb(23 39 42 / 0.06);
    --senka-lg: 0 16px 32px -8px rgb(23 39 42 / 0.18), 0 4px 8px -4px rgb(23 39 42 / 0.08);

    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    --tranzicija: all 0.18s ease;
    --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;
}

/* ===== REZIM TEME ===== */
body.tamna {
    color-scheme: dark;
}

body:not(.tamna) {
    color-scheme: light;
}

/* ===== LAYOUT ===== */
.app-koren {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

.glavni {
    flex: 1;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 22px 20px 30px;
}

/* ===== TOOLTIP ===== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 7px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--tekst-primarni);
    color: var(--bg-kartica);
    font-size: 0.65rem;
    font-weight: 650;
    line-height: 1.4;
    padding: 5px 9px;
    border-radius: 6px;
    white-space: nowrap;
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    z-index: 30;
    pointer-events: none;
    box-shadow: var(--senka-md);
}

/* ===== PRISTUPACNOST ===== */
:focus-visible {
    outline: 2px solid var(--primarna);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

button:focus:not(:focus-visible) {
    outline: none;
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--ivica) transparent;
}

/* ===== SKROLBAR ===== */
::-webkit-scrollbar {
    width: 9px;
    height: 9px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--ivica);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--tekst-muted);
    background-clip: content-box;
}

/* ===== POMOCNE KLASE ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}