/* Глобальні стилі - Палітра: Dark, Blue, Green */
:root {
    --bg-color: #0B132B;
    --card-bg: #1C2541;
    --primary-blue: #48CAE4;
    --accent-green: #06D6A0;
    --text-main: #E0E1DD;
    --text-muted: #95A5A6;
    --nav-bg: rgba(11, 19, 43, 0.9);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px;
    flex: 1;
}

/* Навігація */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background-color: var(--nav-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(72, 202, 228, 0.1);
    backdrop-filter: blur(10px);
}

.navbar .logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-main);
    letter-spacing: 1px;
}

.navbar .logo span {
    color: var(--accent-green);
}

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

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-green);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Hero Секція */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 75vh;
    padding: 0 20px;
    text-align: center;
    background: radial-gradient(circle at 10% 20%, rgba(28, 37, 65, 0.8) 0%, rgba(11, 13, 43, 1) 90%);
}

.hero-content {
    max-width: 800px;
}

.badge {
    background-color: rgba(6, 214, 160, 0.1);
    color: var(--accent-green);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid rgba(6, 214, 160, 0.2);
}

.hero-content h1 {
    font-size: 52px;
    margin-bottom: 20px;
    color: #FFF;
    letter-spacing: -1px;
}

.hero-content .subtitle {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.hero-content .engie-mention {
    font-size: 16px;
    color: var(--primary-blue);
    margin-bottom: 40px;
    background-color: rgba(72, 202, 228, 0.05);
    padding: 12px;
    border-radius: 8px;
    border-left: 3px solid var(--primary-blue);
    display: inline-block;
    text-align: left;
}

.hero-btns .btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--accent-green);
    color: var(--bg-color);
}

.btn-primary:hover {
    background-color: #05bfa0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(6, 214, 160, 0.3);
}

.btn-secondary {
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
}

.btn-secondary:hover {
    background-color: rgba(72, 202, 228, 0.1);
    transform: translateY(-2px);
}

/* Skills Highlight */
.skills-highlight {
    padding: 60px 20px;
    background-color: #0f1934;
    text-align: center;
}

.skills-highlight h2 {
    margin-bottom: 40px;
    font-size: 32px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.skill-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease, border 0.3s ease;
}

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

.skill-card .icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.skill-card h3 {
    margin-bottom: 10px;
    color: #FFF;
}

.skill-card p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Сторінка проєктів */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h1 {
    font-size: 40px;
    color: #FFF;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 18px;
}

.project-detailed-card {
    background-color: var(--card-bg);
    padding: 35px;
    border-radius: 10px;
    margin-bottom: 30px;
    border-left: 4px solid var(--accent-green);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.project-detailed-card:hover {
    transform: scale(1.01);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.project-header h2 {
    font-size: 22px;
    color: #FFF;
}

.project-tech {
    background-color: rgba(72, 202, 228, 0.1);
    color: var(--primary-blue);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
}

.project-detailed-card p {
    margin-bottom: 15px;
    color: var(--text-main);
}

.project-detailed-card ul {
    list-style-type: none;
}

.project-detailed-card ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 15px;
}

.project-detailed-card ul li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: bold;
}

/* Хронологія досвіду (Timeline) */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
    border-left: 2px solid var(--card-bg);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: var(--accent-green);
    border-radius: 50%;
    left: -39px;
    top: 5px;
    box-shadow: 0 0 10px var(--accent-green);
}

.timeline-date {
    font-weight: bold;
    color: var(--primary-blue);
    margin-bottom: 5px;
    font-size: 14px;
    text-transform: uppercase;
}

.timeline-content {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
}

.timeline-content h3 {
    color: #FFF;
    margin-bottom: 5px;
}

.timeline-content .location {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.company-tag {
    display: inline-block;
    background-color: #E63946;
    color: #FFF;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 10px;
}

/* Сітка контактів */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.contact-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s ease;
    display: block;
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-blue);
    box-shadow: 0 10px 20px rgba(72, 202, 228, 0.1);
}

.card-icon {
    font-size: 36px;
    margin-bottom: 15px;
}

.contact-card h3 {
    margin-bottom: 8px;
    color: #FFF;
}

.contact-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 15px;
}

.card-link {
    color: var(--accent-green);
    font-weight: 600;
    font-size: 14px;
}

/* Футер */
footer {
    text-align: center;
    padding: 30px;
    background-color: #060b1a;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: auto;
    font-size: 14px;
    color: var(--text-muted);
}

/* Анімації */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Адаптивність */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 15px;
    }
    .nav-links {
        margin-top: 15px;
    }
    .nav-links li {
        margin: 0 10px;
    }
    .hero-content h1 {
        font-size: 36px;
    }
    .project-header {
        flex-direction: column;
    }
}