/* Definicija Boja i Fonta */
:root {
    --color-black: #121212; /* Tamno siva za pozadinu */
    --color-white: #FFFFFF;
    --color-purple: #6A0DAD; /* Kraljevsko Ljubičasta - Glavni Akcenat */
    --color-cyan: #00BFFF; /* Električno Plava - Dodatni Kontrast */
    --color-text-light: #E0E0E0;
    --color-border: #2A2A2A;
    --font-primary: 'Poppins', sans-serif;
    --transition-speed: 0.3s;
}

/* Opšte Reseti i Osnove */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-black);
    color: var(--color-text-light);
    line-height: 1.6;
    scroll-behavior: smooth;
    padding-left: 80px; /* Prostor za fiksni sidebar na desktopu */
}

a {
    color: var(--color-cyan);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--color-purple);
}

/* --- GLAVNI ELEMENTI --- */

h1, h2, h3 {
    font-weight: 700;
    color: var(--color-white);
}

h1 { font-size: 3rem; margin-bottom: 0.5rem; }
h2 { font-size: 2.5rem; margin-bottom: 1.5rem; text-align: center; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }

.accent-color {
    color: var(--color-purple);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-cyan);
    margin: 10px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-text-light);
}

.content-section {
    padding: 100px 5% 80px;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- NAVIGACIJA I FIKSNI ELEMENTI --- */

/* Fiksna Bočna Navigacija (Desktop) */
#sidebar-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 80px;
    height: 100%;
    background-color: var(--color-black);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: width var(--transition-speed) ease-in-out;
    overflow: hidden; 
}

#sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 15px 0;
    color: var(--color-text-light);
    font-size: 1.4rem;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    width: 100%;
    justify-content: center;
    position: relative;
}

#sidebar-nav a:hover {
    background-color: var(--color-border);
    color: var(--color-purple);
}

.nav-text {
    position: absolute;
    left: 80px; 
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    background-color: var(--color-black);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed);
    z-index: 1001;
    border: 1px solid var(--color-purple);
}

#sidebar-nav a:hover .nav-text {
    opacity: 1;
}

/* WhatsApp Dugme */
.whatsapp-btn {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background-color: var(--color-cyan);
    color: var(--color-black);
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    box-shadow: 0 0 15px var(--color-cyan);
    z-index: 999;
    transition: transform 0.4s ease-in-out;
    animation: pulse 2s infinite; 
}

.whatsapp-btn:hover {
    transform: scale(1.1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0px rgba(0, 191, 255, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(0, 191, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 191, 255, 0); }
}

/* --- DUGMIĆI --- */

.btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed), transform 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-purple);
    color: var(--color-white);
    box-shadow: 0 0 10px rgba(106, 13, 221, 0.5); 
}

.btn-primary:hover {
    background-color: #7B1FA2; 
    box-shadow: 0 0 20px rgba(106, 13, 221, 0.8);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-cyan);
    border: 2px solid var(--color-cyan);
}

.btn-secondary:hover {
    background-color: var(--color-cyan);
    color: var(--color-black);
    box-shadow: 0 0 15px var(--color-cyan);
    transform: translateY(-2px);
}

/* --- HERO SEKCIJA --- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 5;
    max-width: 800px;
    padding: 20px;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* --- SEKCIJA O MENI --- */

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 3rem;
}

.feature-box {
    background-color: #1F1F1F;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: transform 0.4s, box-shadow 0.4s;
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(106, 13, 221, 0.2);
}

.feature-box i {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

/* --- SEKCIJA PAKETI USLUGA --- */

.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.package-card {
    background-color: #1F1F1F;
    padding: 40px 30px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    text-align: center;
    /* Spojeni i ispravljeni hover stilovi ovde */
    transition: border-color 0.4s, transform 0.4s, box-shadow 0.4s; 
    position: relative;
}

.package-card.featured {
    border: 2px solid var(--color-purple);
    box-shadow: 0 0 30px rgba(106, 13, 221, 0.4);
}

/* ISPRAVLJEN HOVER STIL */
.package-card:hover {
    border-color: var(--color-cyan);
    transform: translateY(-5px);
    box-shadow: 0 0 15px rgba(0, 191, 255, 0.5); 
}

.package-card.selected {
    border: 3px solid var(--color-purple); 
    box-shadow: 0 0 25px rgba(106, 13, 221, 0.7);
    transform: scale(1.02);
}

.package-card h3 {
    margin-top: 0;
    color: var(--color-purple);
}

.price, .price-monthly {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 15px 0 25px;
    color: var(--color-cyan);
}

.package-card ul {
    list-style: none;
    padding: 0;
    text-align: left;
    margin-bottom: 30px;
}

.package-card ul li {
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
}

.package-card ul li:last-child {
    border-bottom: none;
}

.package-card ul li i {
    margin-right: 10px;
    color: var(--color-purple);
}

.package-card ul li.faded i {
    color: var(--color-text-light);
    opacity: 0.5;
}

.tag {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--color-cyan);
    color: var(--color-black);
    padding: 5px 15px;
    border-bottom-left-radius: 10px;
    font-size: 0.8rem;
    font-weight: 700;
}

/* --- DINAMIČKI PRIKAZ PAKETA I ODRŽAVANJA --- */

.package-selection-display {
    background-color: var(--color-black);
    padding: 20px;
    border: 2px solid var(--color-border);
    border-left: 5px solid var(--color-cyan);
    border-radius: 8px;
    margin-bottom: 25px;
    transition: all 0.5s ease-in-out;
}
.package-selection-display h4 {
    color: var(--color-cyan);
    margin-bottom: 5px;
}
.package-selection-display .final-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-purple);
    margin-top: 10px;
}
.package-selection-display.card-animate.visible {
    animation: fadeInScale 0.5s ease-out; 
}
@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* Stil za Održavanje Opcije */
.maintenance-box {
    background-color: #1F1F1F;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: 20px;
}

.maintenance-box label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 1.1rem;
    /*user-select: none;*/
}

#maintenance-checkbox {
    opacity: 0; 
    position: absolute;
}
.custom-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-cyan);
    border-radius: 4px;
    margin-right: 10px;
    transition: all 0.3s;
    position: relative;
}
#maintenance-checkbox:checked + .custom-checkbox {
    background-color: var(--color-cyan);
    border-color: var(--color-cyan);
}
#maintenance-checkbox:checked + .custom-checkbox::after {
    content: '\f00c'; 
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--color-black);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 14px;
}

#maintenance-details {
    margin-top: 10px;
    padding-left: 30px;
    border-left: 2px dashed var(--color-purple);
}

#maintenance-period {
    padding: 8px;
    background-color: var(--color-black);
    color: var(--color-text-light);
    border: 1px solid var(--color-cyan);
    border-radius: 4px;
    margin: 5px 0 10px;
}

/* --- PORTFOLIO --- */

.portfolio-item {
    background-color: #1F1F1F;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 5px solid var(--color-purple);
}

.accent-link {
    display: inline-block;
    margin-top: 10px;
    font-weight: 500;
    color: var(--color-cyan);
}

.accent-link i {
    transition: transform 0.3s;
}

.accent-link:hover i {
    transform: translateX(5px);
}

/* --- KONTAKT FORMA --- */

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    padding: 15px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    background-color: var(--color-black);
    color: var(--color-text-light);
    font-family: var(--font-primary);
    transition: border-color 0.3s, box-shadow 0.3s;
}

/* FUTURISTIČKI INPUT GLOW */
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--color-purple);
    box-shadow: 0 0 10px rgba(106, 13, 221, 0.5); /* Ljubičasti glow */
    outline: none;
}

.social-links {
    text-align: center;
    margin-top: 30px;
}

.social-links a {
    font-size: 2rem;
    margin: 0 15px;
    color: var(--color-text-light);
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--color-cyan);
}

/* --- FOOTER --- */
footer {
    text-align: center;
    padding: 30px;
    border-top: 1px solid var(--color-border);
    font-size: 0.9rem;
    color: #666;
}


/* --- ANIMACIJE NA SKROLU (Opacity/Translate) --- */
.section-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.section-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.card-animate {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.card-animate.visible {
    opacity: 1;
    transform: scale(1);
}


/* --- RESPONSIVE DIZAJN (Mobilni Prilagođavanje) --- */

/* Hamburgver Ikonica (Kreirajte ga u HTML-u) */
.menu-toggle {
    display: none; /* Sakrivamo na desktopu */
    position: fixed;
    top: 15px;
    right: 15px;
    width: 30px;
    height: 30px;
    cursor: pointer;
    z-index: 1005; 
}
.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-purple);
    border-radius: 2px;
    position: absolute;
    transition: all 0.3s ease-in-out;
}
.menu-toggle .bar:nth-child(1) { top: 0; }
.menu-toggle .bar:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle .bar:nth-child(3) { bottom: 0; }

/* Animacija X-a */
.menu-toggle.active .bar:nth-child(1) { transform: translateY(13px) rotate(45deg); }
.menu-toggle.active .bar:nth-child(2) { opacity: 0; }
.menu-toggle.active .bar:nth-child(3) { transform: translateY(-13px) rotate(-45deg); }


@media (max-width: 900px) {
    
    body {
        padding-left: 0; 
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .menu-toggle {
        display: block; /* Prikazujemo na mobilnom */
    }

    /* Fiksni Top Navbar/Hamburger Meni na mobilnom */
    #sidebar-nav {
        /* Postavljamo ga za prikaz na celom ekranu */
        width: 100%;
        height: 100vh; /* Celokupna visina ekrana */
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 80px;
        border-right: none;
        border-bottom: none;
        
        /* Skrivamo navigaciju van ekrana */
        transform: translateX(-100%); 
        transition: transform 0.4s ease-in-out;
    }
    
    #sidebar-nav.active {
        transform: translateX(0); /* Prikazujemo navigaciju */
    }
    
    #sidebar-nav a {
        padding: 20px;
        font-size: 1.5rem;
        justify-content: flex-start; /* Poravnanje levo */
        width: 90%;
        margin: 5px auto;
        border-radius: 5px;
    }
    
    .nav-text {
        display: inline; /* Prikazujemo tekst u mobilnom meniju */
        position: static;
        transform: none;
        opacity: 1;
        background-color: transparent;
        border: none;
        margin-left: 15px;
        color: var(--color-text-light);
    }
    
    #sidebar-nav a:hover .nav-text {
        opacity: 1;
    }
    
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        font-size: 1.8rem;
        right: 15px;
        bottom: 75px; 
    }
}

@media (max-width: 600px) {
    
    .content-section {
        padding: 60px 5% 40px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }
}

/* --- MODAL (POPUP) STILOVI --- */

/* Kontejner koji prekriva ceo ekran (Overlay) */
#modal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9); /* Skoro crna, blago providna pozadina */
    display: none; /* Inicijalno sakriveno */
    justify-content: center;
    align-items: center;
    z-index: 2000; 
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    padding: 20px;
}

#modal-container.active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

/* Stil samog Pop-upa (Modal Dialog) */
.modal-dialog {
    background-color: transparent;
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s; /* Brutalna animacija */
}

#modal-container.active .modal-dialog {
    transform: scale(1) translateY(0);
    opacity: 1;
}

/* Sadržaj Modala (Unutrašnja kartica) */
.modal-content {
    background-color: var(--color-black);
    padding: 40px;
    border-radius: 12px;
    border: 3px solid var(--color-purple); /* Debeli akcentovani okvir */
    box-shadow: 0 0 40px rgba(106, 13, 221, 0.5); /* Ljubičasti glow */
}

.modal-content h3 {
    margin-top: 10px;
    font-size: 1.8rem;
    color: var(--color-cyan);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 10px;
}

.modal-content p {
    margin: 15px 0;
    color: var(--color-text-light);
}

.modal-content ul {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.modal-content ul li {
    padding: 8px 0;
    border-bottom: 1px dotted var(--color-border);
    display: flex;
    align-items: flex-start;
    line-height: 1.4;
}

.modal-content ul li::before {
    content: '\f058'; /* Check-circle ikonica */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--color-purple);
    margin-right: 10px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.modal-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 5px;
}

/* Dugme za Zatvaranje (X) */
.modal-close-btn {
    position: absolute;
    top: -15px; /* Postavljamo ga van kutije */
    right: -15px;
    background-color: var(--color-cyan);
    color: var(--color-black);
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: transform 0.3s, background-color 0.3s;
    z-index: 2001;
    box-shadow: 0 0 10px var(--color-cyan);
}

.modal-close-btn:hover {
    background-color: var(--color-purple);
    color: var(--color-white);
    transform: rotate(90deg);
    box-shadow: 0 0 10px var(--color-purple);
}

/* Mobile prilagođavanje */
@media (max-width: 600px) {
    .modal-content {
        padding: 25px;
    }
    .modal-dialog {
        max-width: 95%;
    }
    .modal-close-btn {
        top: 5px;
        right: 5px;
        background-color: var(--color-black);
        color: var(--color-cyan);
        border: 2px solid var(--color-cyan);
    }
    .modal-icon {
        font-size: 2.5rem;
    }
}