@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');




:root {
    /* Light Mode (Engineering Clean) */
    --bg-color: #ffffff;
    /* Pure white or very light gray */
    --card-bg: #f8f9fa;
    --text-color: #2d3436;
    --text-muted: #636e72;
    --accent-color: #0984e3;
    /* Professional Blue */
    --border-color: #dfe6e9;
    --maker-color: #00b894;
    /* Green */
    --nav-bg: rgba(255, 255, 255, 0.95);

    --font-heading: 'Space Mono', monospace;
    --font-body: 'Inter', sans-serif;

    --border-radius: 6px;
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    /* Dark Mode (Cyberdeck Refined) */
    --bg-color: #111827;
    /* Deep Slate */
    --card-bg: #1f2937;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    /* Sky Blue */
    --border-color: #334155;
    --maker-color: #34d399;
    --nav-bg: rgba(17, 24, 39, 0.95);

    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --hover-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;

    /* Maker Grid Pattern */
    background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.brand img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.1));
}

[data-theme="dark"] .brand img {
    filter: invert(1) brightness(2) drop-shadow(0 0 5px rgba(255, 255, 255, 0.1));
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.nav-controls {
    display: flex;
    gap: 0.75rem;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    font-family: var(--font-heading);
}

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

/* Container */
.main-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Hero */
.hero {
    margin-bottom: 4rem;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 2rem;
}

.hero-content {
    flex: 2;
    min-width: 300px;
}

.hero-stats {
    flex: 1;
    min-width: 250px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.stat-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Sections */
section {
    margin-bottom: 5rem;
}

.section-header {
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: var(--font-heading);
}

/* Project Cards (Featured) */
.project-list {
    display: grid;
    gap: 2rem;
}

.feat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 200px;
    /* Content | Tech Stack */
    gap: 2rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
    border-color: var(--accent-color);
}

.feat-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.feat-role {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--accent-color);
    background: rgba(9, 132, 227, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.feat-desc {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.feat-links a {
    color: var(--text-color);
    margin-right: 1rem;
    font-size: 1.1rem;
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.feat-links a:hover {
    border-bottom-color: var(--accent-color);
}

.feat-tech {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    border-left: 1px solid var(--border-color);
    padding-left: 1.5rem;
}

.tech-tag {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Lab / Interests (Grid) */
.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.lab-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border-top: 3px solid var(--maker-color);
}

.lab-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lab-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Footer */
footer {
    text-align: center;
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.socials {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.socials a {
    color: var(--text-muted);
    margin: 0 0.75rem;
    transition: color 0.2s;
}

.socials a:hover {
    color: var(--accent-color);
}

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

    .feat-tech {
        flex-direction: row;
        flex-wrap: wrap;
        border-left: none;
        padding-left: 0;
        border-top: 1px solid var(--border-color);
        padding-top: 1rem;
    }

    .hero {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }



    /* Could add mobile menu later if needed */
}


.lang-dropdown {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
}

.lang-menu {
    position: absolute;
    top: 110%;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    list-style: none;
    padding: 6px 0;
    min-width: 120px;
    display: none;
    z-index: 1000;
}

.lang-menu li {
    padding: 8px 14px;
    cursor: pointer;
    white-space: nowrap;
}

.lang-menu li:hover {
    background: var(--hover-bg);
}

/* Açık hali */
.lang-dropdown.open .lang-menu {
    display: block;
}

/* Global Interactive Elements */
.interactive-input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    outline: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.interactive-input:hover,
.interactive-input:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(9, 132, 227, 0.15);
    border-color: var(--accent-color);
}

.interactive-btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.interactive-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(9, 132, 227, 0.25);
    background: var(--accent-color);
    color: #ffffff;
}

.interactive-btn:hover i {
    color: #ffffff;
}

#process-btn {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

#process-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(9, 132, 227, 0.3);
    opacity: 0.95;
}