/* ============================================
   TOTAL FACILITY SERVICES - Main Stylesheet
   Website: www.tfs.rs
   ============================================ */

:root {
    --primary: #7ED321;
    --primary-dark: #6bc218;
    --primary-light: #a8e55e;
    --dark: #1A1A1A;
    --gray: #666666;
    --light-gray: #F5F5F5;
    --white: #FFFFFF;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 45px;
    width: auto;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

nav a:hover {
    color: var(--primary);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

nav a:hover::after {
    width: 100%;
}

.cta-button {
    background: var(--primary);
    color: var(--dark) !important;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 700;
    transition: var(--transition);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(126,211,33,0.3);
}

.cta-button::after {
    display: none !important;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(26,26,26,0.75) 0%, rgba(26,26,26,0.55) 100%), 
                url('https://images.unsplash.com/photo-1713359003488-53609bbd95c7?fm=jpg&q=80&w=1920&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    margin-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, rgba(245,245,245,1) 0%, transparent 100%);
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    padding: 0 30px;
    animation: fadeInUp 1s ease;
    position: relative;
    z-index: 2;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    font-weight: 800;
}

.hero h1 span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 15px;
    opacity: 0.95;
    font-weight: 500;
}

.hero-stats {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--dark);
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
    border: 2px solid var(--primary);
    font-family: 'Montserrat', sans-serif;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(126,211,33,0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-block;
    border: 2px solid var(--white);
    font-family: 'Montserrat', sans-serif;
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--dark);
}

/* Stats Bar */
.stats-bar {
    background: var(--dark);
    padding: 50px 0;
    color: var(--white);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 0 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 800;
}

.stat-item p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Section Styles */
.section {
    padding: 100px 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 30px;
    padding-right: 30px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.section-title p {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.title-accent {
    color: var(--primary);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: var(--transition);
    border: 1px solid #eee;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
    border-color: var(--primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-list {
    list-style: none;
    margin-top: 20px;
    text-align: left;
}

.service-list li {
    padding: 8px 0;
    color: var(--gray);
    font-size: 0.9rem;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-list li::before {
    content: '✓';
    color: var(--primary);
    font-weight: bold;
    flex-shrink: 0;
}

/* Reference Section */
.reference-section {
    background: var(--light-gray);
    padding: 100px 0;
}

.reference-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.reference-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    position: relative;
}

.reference-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.reference-image:hover img {
    transform: scale(1.05);
}

.reference-image::after {
    content: 'Zemunske kapije';
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(26,26,26,0.8);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 10px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
}

.reference-text h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.reference-text .highlight {
    color: var(--primary);
    font-weight: 800;
}

.reference-text p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 1.05rem;
}

.reference-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.ref-stat {
    background: var(--white);
    padding: 25px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.ref-stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.ref-stat h4 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.ref-stat p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--gray);
}

/* For Managers Section */
.managers-section {
    background: var(--dark);
    color: var(--white);
    padding: 100px 0;
}

.managers-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    text-align: center;
}

.managers-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.managers-content > p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto 50px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.benefit-item {
    background: rgba(255,255,255,0.05);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
}

.benefit-item:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-5px);
}

.benefit-item h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.benefit-item p {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.7;
}

/* Process Section */
.process-section {
    padding: 100px 0;
    background: var(--white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step::after {
    content: '→';
    position: absolute;
    right: -25px;
    top: 40px;
    font-size: 2rem;
    color: var(--primary);
    opacity: 0.5;
}

.process-step:last-child::after {
    display: none;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary);
    color: var(--dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 auto 25px;
    font-family: 'Montserrat', sans-serif;
    box-shadow: 0 10px 30px rgba(126,211,33,0.3);
}

.process-step h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.process-step p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-section {
    background: var(--light-gray);
    padding: 100px 0;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-item div h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.contact-item div p {
    color: var(--gray);
    font-size: 0.95rem;
}

.contact-item div a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.contact-item div a:hover {
    color: var(--primary);
}

.contact-form {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #eee;
    border-radius: 12px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    background: var(--primary);
    color: var(--dark);
    padding: 16px;
    border: none;
    border-radius: 12px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(126,211,33,0.3);
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand img {
    height: 45px;
    margin-bottom: 20px;
}

.footer-brand p {
    opacity: 0.7;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-brand .company-info {
    font-size: 0.85rem;
    opacity: 0.6;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 20px 30px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    opacity: 0.6;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid,
    .benefits-grid,
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .reference-content,
    .contact-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 15px 20px;
    }

    nav {
        display: none;
    }

    .mobile-menu {
        display: flex;
    }

    .hero {
        min-height: 90vh;
        margin-top: 70px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-item h3 {
        font-size: 2rem;
    }

    .services-grid,
    .benefits-grid,
    .process-steps {
        grid-template-columns: 1fr;
    }

    .process-step::after {
        display: none;
    }

    .section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .reference-stats {
        grid-template-columns: 1fr;
    }

    .reference-image img {
        height: 300px;
    }

    .contact-form {
        padding: 30px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Animation on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}