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

:root {
    --primary-green: #2d6a4f;
    --light-green: #52b788;
    --accent-green: #40916c;
    --bg-color: #ffffff;
    --surface-color: #ffffff;
    --surface-muted: #f8f9fa;
    --surface-subtle: #f7fbf9;
    --text-dark: #1b263b;
    --text-light: #415a77;
    --border-color: #e0e0e0;
    --pill-bg: #f0f9f4;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --footer-bg: #1b263b;
    --shadow-nav: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-float: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 12px 24px rgba(0, 0, 0, 0.1);
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.05);
    --toggle-indicator: #2d6a4f;
}

html[data-theme="dark"] {
    --bg-color: #0f172a;
    --surface-color: #111827;
    --surface-muted: #0b1220;
    --surface-subtle: #0f1b2d;
    --text-dark: #f8fafc;
    --text-light: #cbd5f5;
    --border-color: #23324a;
    --pill-bg: rgba(82, 183, 136, 0.2);
    --nav-bg: rgba(15, 23, 42, 0.92);
    --footer-bg: #0b1220;
    --shadow-nav: 0 2px 10px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-float: 0 4px 12px rgba(0, 0, 0, 0.55);
    --shadow-strong: 0 12px 24px rgba(0, 0, 0, 0.55);
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.4);
    --toggle-indicator: #7ae3b0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    box-shadow: var(--shadow-nav);
    z-index: 1000;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav .nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-dark);
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
}

.theme-toggle:hover {
    border-color: var(--primary-green);
    box-shadow: var(--shadow-card);
    transform: translateY(-1px);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

/*
.theme-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--toggle-indicator);
    display: inline-block;
}
*/

.theme-indicator {
    font-size: 0.9rem;
    text-align: center;
    justify-content: center;
}

.theme-label {
    font-size: 0.9rem;
}

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

/* Hero Section (Home page) */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 6rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
}

.hero-content .highlight {
    color: var(--primary-green);
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-light);
    max-width: 600px;
    margin-bottom: 2rem;
    text-align: center;
}

.hero-buttons {
    text-align: center;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-green);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
}

.cta-button:hover {
    background: var(--accent-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(45, 106, 79, 0.3);
}

/* Page Header (for other pages) */
.page-header {
    padding-top: 8rem;
    padding-bottom: 3rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* Home Preview Section */
.home-preview {
    padding: 4rem 0;
    background: var(--surface-muted);
}

.home-preview h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-dark);
}

.home-preview h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-green);
    margin: 1rem auto;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.preview-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s;
}

.preview-card:hover {
    transform: translateY(-5px);
}

.preview-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.preview-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.preview-card p {
    color: var(--text-light);
}

/* Projects Section */
.projects-section {
    padding: 3rem 0 6rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-strong);
    border-color: var(--primary-green);
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--light-green), var(--primary-green));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.project-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-badge {
    padding: 0.3rem 0.8rem;
    background: var(--pill-bg);
    color: var(--primary-green);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    justify-content: center;
    align-items:center;
}

.project-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.project-link:hover {
    color: var(--accent-green);
}

/* Travel Section */
.travel-section {
    padding: 3rem 0 6rem 0;
}

.travel-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

#map-container {
    width: 100%;
    height: 500px;
    background: var(--surface-color);
    border-radius: 10px;
    box-shadow: var(--shadow-float);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

#travel-map {
    position: absolute;
    inset: 0;
}

.map-placeholder {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-light);
    background: var(--surface-subtle);
}

.travel-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.travel-item {
    padding: 1.5rem;
    background: var(--surface-color);
    border-left: 4px solid var(--primary-green);
    border-radius: 5px;
    box-shadow: var(--shadow-soft);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.travel-marker {
    font-size: 2rem;
    color: var(--primary-green);
    line-height: 1;
}

.travel-item .flag {
    font-size: 2rem;
}

.travel-city {
    display: block;
    margin-bottom: 0.2rem;
    color: var(--text-dark);
}

.travel-country {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 0.4rem;
}

.travel-description {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
}

.travel-meta {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.4rem;
}

.travel-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.4rem 0 0.4rem;
}

.travel-tag {
    padding: 0.3rem 0.8rem;
    background: var(--pill-bg);
    color: var(--primary-green);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.leaflet-popup-content .travel-tag {
    font-size: 0.75rem;
}

.travel-place {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.2rem;
}

.travel-credit {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

/* About Section */
.about-section {
    padding: 3rem 0 6rem 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-content h2 {
    font-size: 2rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
}

.skill-tag {
    padding: 0.6rem 1.2rem;
    background: var(--primary-green);
    color: white;
    border-radius: 25px;
    font-weight: 500;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.5rem;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.contact-link:hover {
    border-color: var(--primary-green);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(45, 106, 79, 0.2);
}

.contact-link .icon {
    font-size: 1.5rem;
}

/* Footer */
footer {
    background: var(--footer-bg);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
        font-size: 0.9rem;
    }

    nav .nav-links {
        gap: 0.75rem;
    }

    .theme-toggle {
        padding: 0.4rem 0.75rem;
    }

    .hero-content h1,
    .page-header h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .projects-grid,
    .preview-grid {
        grid-template-columns: 1fr;
    }

    .contact-links {
        grid-template-columns: 1fr;
    }
}