/*
* NexaMark - Professional Agency Website
* Final Production Stylesheet
* Version: 3.0
*/

/* 1. ROOT VARIABLES & GLOBAL RESET */
:root {
    --primary-red: #D60039;
    --primary-dark-gray: #2C2C2C;
    --bg-dark: #121212;
    --bg-light: #1E1E1E;
    --text-light: #F5F5F5;
    --text-medium: #A3A3A3;
    --border-color: rgba(255, 255, 255, 0.1);
    --font-family: 'Poppins', sans-serif;
    --header-height: 5rem;
    --transition-fast: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 0.75rem;
    --shadow-light: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 15px 40px rgba(0, 0, 0, 0.2);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.grid { display: grid; gap: 2rem; }
.section { padding: 6rem 0; overflow-x: hidden; }

/* 2. PRELOADER */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-dark);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}
.loader {
    width: 50px;
    height: 50px;
    border: 5px solid var(--primary-dark-gray);
    border-top-color: var(--primary-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 3. REUSABLE COMPONENTS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.9rem 2.2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
}
.btn-primary {
    background-color: var(--primary-red);
    color: var(--text-light);
    border-color: var(--primary-red);
    box-shadow: 0 4px 20px rgba(214, 0, 57, 0.25);
}
.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(214, 0, 57, 0.35);
    background-color: #E0003C;
}
.btn-secondary {
    border-color: var(--border-color);
    color: var(--text-light);
}
.btn-secondary:hover {
    background-color: var(--primary-red);
    border-color: var(--primary-red);
}

.card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition-slow);
    position: relative;
}
.card:hover {
    transform: translateY(-10px);
    border-color: rgba(214, 0, 57, 0.5);
    box-shadow: var(--shadow-heavy);
}
.card-icon {
    font-size: 2.5rem;
    color: var(--primary-red);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}
.card:hover .card-icon { transform: scale(1.1); }
.card-title { font-size: 1.25rem; margin-bottom: 0.5rem; font-weight: 600; }
.card-description { color: var(--text-medium); font-size: 0.95rem; }

/* 4. HEADER & NAVIGATION */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.header.scrolled {
    background-color: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-light);
}
.navbar { display: flex; justify-content: space-between; align-items: center; height: var(--header-height); }
.nav-brand { display: flex; align-items: center; gap: 0.75rem; font-size: 1.5rem; font-weight: 700; color: var(--text-light); }
.nav-logo { height: 35px; width: auto; }
.nav-menu { transition: var(--transition-fast); }
.nav-list { display: flex; gap: 2.5rem; }
.nav-link {
    font-weight: 500;
    color: var(--text-medium);
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}
.nav-link:hover, .nav-link.active-link { color: var(--text-light); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--primary-red);
    transition: var(--transition-fast);
}
.nav-link:hover::after, .nav-link.active-link::after { width: 100%; }
.nav-toggle { display: none; font-size: 1.5rem; cursor: pointer; background: none; color: var(--text-light); }

@media (max-width: 768px) {
    .nav-toggle { display: block; z-index: 1001; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--bg-light);
        padding: 6rem 2rem 2rem;
        box-shadow: var(--shadow-heavy);
    }
    .nav-menu.open { right: 0; }
    .nav-list { flex-direction: column; align-items: flex-start; gap: 2rem; }
    .nav-link { font-size: 1.2rem; }
}

/* 5. HERO & PAGE HEADERS */
.hero, .page-header {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero-background-overlay, .page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(214, 0, 57, 0.1), transparent 70%);
    z-index: -1;
}
.hero-title, .page-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}
.highlight-text { color: var(--primary-red); }
.hero-description, .page-subtitle {
    font-size: 1.2rem;
    color: var(--text-medium);
    max-width: 650px;
    margin: 0 auto 2.5rem auto;
}
.hero-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.page-header { padding-top: calc(var(--header-height) + 3rem); padding-bottom: 4rem; background-color: var(--bg-light); }

/* 6. SECTION STYLES (Services, Portfolio, About, Contact) */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-title { font-size: clamp(2rem, 5vw, 2.5rem); font-weight: 700; margin-bottom: 0.5rem; }
.section-subtitle { font-size: 1.1rem; color: var(--text-medium); max-width: 600px; margin: 0 auto; }
.section-link { text-align: center; margin-top: 3rem; }

.services-preview-grid, .services-page-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.portfolio-preview { background-color: var(--bg-light); }
.portfolio-preview-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.portfolio-card { padding: 0; }
.portfolio-card .card-image { aspect-ratio: 16 / 10; overflow: hidden; }
.portfolio-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.portfolio-card:hover img { transform: scale(1.05); }
.portfolio-card .card-content { padding: 1.5rem; }
.portfolio-card .card-category { font-size: 0.8rem; color: var(--primary-red); font-weight: 600; text-transform: uppercase; margin-bottom: 0.5rem; }

.cta { background-color: var(--primary-dark-gray); }
.cta-container {
    text-align: center;
    padding: 4rem 2rem;
    border-radius: var(--border-radius);
    background: linear-gradient(45deg, var(--primary-red), #8B0023);
    box-shadow: var(--shadow-heavy);
}
.cta h2 { font-size: 2rem; margin-bottom: 1rem; }
.cta p { color: rgba(255,255,255,0.8); margin-bottom: 2rem; }
.cta .btn-primary { background-color: var(--text-light); color: var(--primary-red); }

/* 7. PORTFOLIO PAGE */
.portfolio-filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-bottom: 3rem; }
.filter-btn {
    background-color: var(--bg-light);
    color: var(--text-medium);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
    border: 1px solid var(--border-color);
}
.filter-btn:hover { color: var(--text-light); background-color: var(--primary-dark-gray); }
.filter-btn.active { background-color: var(--primary-red); color: var(--text-light); border-color: var(--primary-red); }
.portfolio-page-grid { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 2rem; }
.portfolio-full-card {
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-slow);
}
.portfolio-full-card .card-image { aspect-ratio: 16 / 10; overflow: hidden; }
.portfolio-full-card .card-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.portfolio-full-card .tag { background-color: var(--primary-dark-gray); color: var(--text-medium); padding: 0.25rem 0.75rem; border-radius: 50px; font-size: 0.75rem; font-weight: 500; }
.portfolio-full-card .card-content { padding: 1.5rem; }
.portfolio-full-card .card-description { font-size: 0.9rem; color: var(--text-medium); margin-bottom: 1.5rem; }
.portfolio-full-card .card-links { display: flex; gap: 1.5rem; }
.portfolio-full-card .card-links a { display: flex; align-items: center; gap: 0.5rem; font-weight: 600; color: var(--text-medium); transition: var(--transition-fast); }
.portfolio-full-card .card-links a:hover { color: var(--primary-red); }

/* 8. ABOUT PAGE */
.about-page-container { align-items: center; grid-template-columns: 1fr; }
@media (min-width: 992px) { .about-page-container { grid-template-columns: 1fr 1fr; gap: 4rem; } }
.about-page-image { border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow-heavy); }
.about-page-image img { width: 100%; height: 100%; object-fit: cover; }
.about-page-title { font-size: 2rem; margin-bottom: 1.5rem; }
.about-page-content p { color: var(--text-medium); margin-bottom: 1.5rem; }
.about-page-quote { padding-left: 1.5rem; border-left: 3px solid var(--primary-red); color: var(--text-light); font-style: italic; font-size: 1.1rem; margin-top: 2rem; }
.qualifications { background-color: var(--bg-light); }
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::after { content: ''; position: absolute; width: 3px; background-color: var(--border-color); top: 0; bottom: 0; left: 50%; margin-left: -1.5px; }
.timeline-item { padding: 1rem 2.5rem; position: relative; width: 50%; }
.timeline-item:nth-child(odd) { left: 0; }
.timeline-item:nth-child(even) { left: 50%; }
.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--bg-light);
    border: 4px solid var(--primary-red);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
}
.timeline-item:nth-child(even)::after { left: -10px; }
.timeline-content {
    padding: 1.5rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    position: relative;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}
.timeline-content:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-light);
}
.timeline-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-red);
    margin-bottom: 0.5rem;
}
.timeline-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}
.timeline-subtitle {
    color: var(--text-medium);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.timeline-status {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
}
.timeline-status.completed {
    background-color: rgba(8, 148, 118, 0.15);
    color: #089476;
}
.timeline-status.ongoing {
    background-color: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

@media screen and (max-width: 768px) {
    .timeline::after { left: 10px; }
    .timeline-item { width: 100%; padding-left: 2.5rem; padding-right: 0.5rem; }
    .timeline-item:nth-child(odd), .timeline-item:nth-child(even) { left: 0; }
    .timeline-item::after { left: 0; }
}

/* 9. CONTACT PAGE */
.contact-page { background-color: var(--bg-light); }
.contact-page-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
}
@media (min-width: 992px) {
    .contact-page-grid { grid-template-columns: 1fr 1.2fr; }
}
.contact-page-info h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}
.contact-page-info p {
    color: var(--text-medium);
    margin-bottom: 2rem;
}
.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.contact-info-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.contact-info-list i {
    font-size: 1.5rem;
    color: var(--primary-red);
    margin-top: 5px;
}
.contact-info-list strong {
    display: block;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}
.contact-info-list a {
    color: var(--text-medium);
    transition: var(--transition-fast);
}
.contact-info-list a:hover { color: var(--primary-red); }
.contact-form {
    background-color: var(--bg-dark);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}
.contact-form h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-light);
    font-size: 1rem;
    transition: var(--transition-fast);
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(214, 0, 57, 0.2);
}
.form-submit-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
}
.hidden-field { display: none; }

/* 10. FOOTER */
.footer {
    background-color: var(--bg-light);
    padding-top: 4rem;
    border-top: 1px solid var(--border-color);
}
.footer-container {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    padding-bottom: 4rem;
}
.footer-brand p {
    color: var(--text-medium);
    margin-top: 1rem;
}
.footer-links h4, .footer-socials h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}
.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.footer-links a {
    color: var(--text-medium);
    transition: var(--transition-fast);
}
.footer-links a:hover {
    color: var(--primary-red);
    padding-left: 5px;
}
.social-links {
    display: flex;
        gap: 1.5rem;
}
.social-links a {
    font-size: 1.5rem;
    color: var(--text-medium);
    transition: var(--transition-fast);
}
.social-links a:hover {
    color: var(--primary-red);
    transform: translateY(-3px);
}
.footer-bottom {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-medium);
    font-size: 0.9rem;
}

/* 11. PROFESSIONAL ANIMATIONS */
[data-reveal] {
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1), transform 0.8s cubic-bezier(0.5, 0, 0, 1);
}

[data-reveal="up"] {
    transform: translateY(60px);
}

[data-reveal="up"].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation for grid items */
.grid > * {
    transition-delay: var(--reveal-delay, 0s);
}
/* 12. ABOUT PAGE - CORE COMPETENCIES */
.core-competencies {
    background-color: var(--bg-light);
}
.competencies-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.competency-item {
    background-color: var(--bg-dark);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-slow);
}
.competency-item:hover {
    transform: translateY(-10px);
    border-color: rgba(214, 0, 57, 0.5);
    box-shadow: var(--shadow-heavy);
}