:root {
    --bg-darker: #0d0e12;      
    --bg-card: #161920;        
    --accent-yellow: #ffcc00;  
    --text-main: #f1f2f6;      
    --text-muted: #9ca3af;     
    --border-color: #262b36;   
    --font-stack: 'Courier New', Courier, monospace, system-ui;
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-stack);
    background-color: var(--bg-darker);
    color: var(--text-main);
}

body {
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 0;
}

.yellow-dot {
    color: var(--accent-yellow);
}

/* NAVIGATION LAYER*/
header {
    background-color: rgba(13, 14, 18, 0.95);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 5%;
}

.logo-text {
    font-weight: bold;
    font-size: 1.5rem;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    text-transform: uppercase;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-yellow);
}

/*HERO / SPLASH SECTION*/
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    background: radial-gradient(circle at 80% 20%, rgba(255, 204, 0, 0.03) 0%, transparent 50%);
}

.hero-subtitle {
    color: var(--accent-yellow);
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.hero-section h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent-yellow);
    text-shadow: 0 0 10px rgba(255, 204, 0, 0.2);
}

.hero-tagline {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 700px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 12px 28px;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: var(--accent-yellow);
    color: #000;
}

.primary-btn:hover {
    background-color: #e6b800;
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.4);
}

.secondary-btn {
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.secondary-btn:hover {
    border-color: var(--accent-yellow);
    color: var(--accent-yellow);
}

/*  ABOUT & INTERACTIVE TAB VIEW */
.section-title {
    font-size: 2.2rem;
    margin-bottom: 40px;
    text-transform: uppercase;
    border-left: 4px solid var(--accent-yellow);
    padding-left: 15px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

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

.tab-box {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    gap: 10px;
    margin-top: 40px;
    margin-bottom: 25px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 12px 24px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--accent-yellow);
    border-bottom: 2px solid var(--accent-yellow);
}

.tab-content {
    display: none;
    background-color: var(--bg-card);
    padding: 30px;
    border: 1px solid var(--border-color);
}

.tab-content.active-content {
    display: block;
}

.skills-list {
    list-style: none;
}

.skills-list li {
    margin-bottom: 15px;
    line-height: 1.6;
}

.skills-list strong {
    color: var(--accent-yellow);
    display: block;
    margin-bottom: 4px;
}

.timeline-item {
    border-left: 2px solid var(--border-color);
    padding-left: 20px;
    position: relative;
    margin-bottom: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--accent-yellow);
    left: -6px;
    top: 5px;
}

.timeline-date {
    color: var(--accent-yellow);
    font-size: 0.85rem;
    font-weight: bold;
}

.company, .institution {
    color: var(--accent-yellow);
}

/* SERVICES GRID*/
.services-section {
    background-color: #11131a;
}

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

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-yellow);
}

.icon-wrapper {
    font-size: 2.5rem;
    color: var(--accent-yellow);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* PROJECTS MATRIX  */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: rgba(255, 204, 0, 0.4);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}


.featured-card {
    border: 1px dashed var(--accent-yellow);
    background: linear-gradient(145deg, #161920 0%, #1a1e26 100%);
}

.project-type {
    color: var(--accent-yellow);
    font-size: 0.75rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.project-card h3 {
    font-size: 1.4rem;
    margin: 10px 0 15px 0;
}

.project-desc {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 25px;
}

.tech-badges span {
    background-color: #202530;
    color: #e1e1e1;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
}

.link-btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 0.85rem;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    text-align: center;
    width: 100%;
    transition: all 0.3s ease;
}

.live-btn {
    background-color: var(--accent-yellow);
    color: #000;
}

.live-btn:hover {
    background-color: #fff;
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
}

.git-btn {
    border: 1px solid var(--accent-yellow);
    color: var(--accent-yellow);
}

.git-btn:hover {
    background-color: var(--accent-yellow);
    color: #000;
}

/* CONTACT TERMINAL CARD*/

.contact-section {
    background-color: #11131a;
}

.contact-wrapper {
    display: flex;
    justify-content: center;
}

.contact-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 600px;
    padding: 40px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--accent-yellow);
    background-color: #202530;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-method label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.contact-method p a {
    color: var(--text-main);
    text-decoration: none;
}

.contact-method p a:hover {
    color: var(--accent-yellow);
}

.social-medias {
    display: flex;
    gap: 15px;
    margin-top: 35px;
    margin-bottom: 25px;
}

.social-medias a {
    color: var(--text-main);
    font-size: 1.3rem;
    transition: color 0.3s ease;
}

.social-medias a:hover {
    color: var(--accent-yellow);
}

.cv-btn {
    display: block;
    background-color: transparent;
    color: var(--accent-yellow);
    border: 1px dashed var(--accent-yellow);
    text-align: center;
    padding: 15px;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.cv-btn:hover {
    background-color: rgba(255, 204, 0, 0.05);
    letter-spacing: 1px;
}
/*FOOTER LAYER */

footer {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

/* Contact Grid Structuring */
.contact-grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
    margin-top: 2.5rem;
}

/* Messaging Form System */
.message-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    text-align: left;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    color: #ffc107; 
    font-weight: 600;
    letter-spacing: 0.05rem;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 0.85rem;
    background-color: #121212;  
    border: 1px solid #2d2d2d;
    border-radius: 4px;
    color: #ffffff;
    font-size: 0.95rem;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}


.form-group input:focus, 
.form-group textarea:focus {
    border-color: #ffc107;
    box-shadow: 0 0 5px rgba(255, 193, 7, 0.2);
    outline: none;
}


.submit-btn {
    align-self: flex-start;
    cursor: pointer;
    margin-top: 0.5rem;
    border: none;
}

@media (max-width: 768px) {
    .contact-grid-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; } 
    .hero-section h1 { font-size: 2.2rem; }
    .container { padding: 40px 0; }
}