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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #888888;
    --border-color: #333333;
    --accent-color: #ffffff;
    --hover-color: #e0e0e0;
    --terminal-bg: #0d1117;
    --terminal-text: #c9d1d9;
    --terminal-green: #ffffff;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styles */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.github-link,
.linkedin-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: color 0.3s ease, transform 0.3s ease;
    line-height: 0;
}

.github-link:hover,
.linkedin-link:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}

.github-icon,
.linkedin-icon {
    display: block;
    width: 28px;
    height: 28px;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: default;
}

.logo-text .char {
    display: inline-block;
    transition: all 0.1s ease;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 3rem 2rem;
}

.content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
}

.main-section {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Name Title with Animation */
.name-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: 3px;
    cursor: default;
    transition: all 0.3s ease;
    line-height: 1.2;
    margin-bottom: 0.6rem;
}

.name-title:hover {
    text-shadow: 0 0 20px var(--accent-color);
}



.subtitle {
    font-size: 1.3rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 1px;
    margin-top: 0.6rem;
}

/* Spacing before WHOAMI and larger WHOAMI title */
.about-whoami {
    margin-top: 1.2rem;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 1.15rem;
}

.about-whoami .section-title {
    font-size: 1.35rem;
}

/* Navigation Boxes */
.nav-boxes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

.nav-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

.about-icon {
    position: absolute;
    top: 0.9rem;
    right: 0.9rem;
    width: 22px;
    height: 22px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    pointer-events: none;
}

.projects-icon {
    position: absolute;
    top: 0.9rem;
    right: 0.9rem;
    width: 22px;
    height: 22px;
    /* Siyah ikonu, metinle benzer gri tona çevir */
    filter: brightness(0) saturate(100%) invert(53%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(95%) contrast(90%);
    pointer-events: none;
}

.blog-icon {
    position: absolute;
    top: 0.9rem;
    right: 0.9rem;
    width: 22px;
    height: 22px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
    pointer-events: none;
}

.nav-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-box:hover::before {
    left: 100%;
}

.nav-box:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

.box-text {
    font-size: 1.1rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* Terminal Styles */
.terminal-container {
    background-color: var(--terminal-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.terminal-header {
    background-color: var(--bg-tertiary);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.terminal-title {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.terminal-btn:nth-child(1) {
    background-color: #ff5f56;
}

.terminal-btn:nth-child(2) {
    background-color: #ffbd2e;
}

.terminal-btn:nth-child(3) {
    background-color: #27c93f;
}

.terminal-body {
    padding: 1.5rem;
    min-height: 300px;
    max-height: 400px;
    overflow-y: auto;
    font-size: 0.9rem;
}

.terminal-output {
    margin-bottom: 1rem;
}

.terminal-line {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.terminal-prompt {
    color: var(--terminal-green);
    font-weight: 600;
}

.terminal-text {
    color: var(--terminal-text);
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--terminal-text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    outline: none;
    caret-color: var(--terminal-green);
}

.terminal-input::placeholder {
    color: var(--text-muted);
}

/* Sidebar Styles */
.sidebar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 2rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sidebar-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-left: 2px solid transparent;
    padding-left: 1rem;
}

.sidebar-link:hover {
    color: var(--accent-color);
    border-left-color: var(--accent-color);
    transform: translateX(5px);
}

/* Footer Styles */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.footer-text {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.footer-separator {
    color: var(--border-color);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .sidebar {
        position: static;
        order: -1;
        margin-bottom: 2rem;
    }

    .nav-boxes {
        grid-template-columns: repeat(2, 1fr);
    }

    .name-title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem 0;
    }

    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem 1.5rem;
        width: 100%;
    }

    .nav-link {
        font-size: 0.95rem;
        padding: 0.5rem;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }

    .name-title {
        font-size: 2.2rem;
        letter-spacing: 1px;
        text-align: center;
        margin-bottom: 0.5rem;
    }

    .subtitle {
        font-size: 1rem;
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .main-section {
        align-items: stretch;
    }

    .nav-boxes {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .footer-text {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-separator {
        display: none;
    }

    .sidebar {
        padding: 1.5rem;
        order: 1;
        /* Move sidebar below content on mobile */
        margin-top: 2rem;
    }

    /* Adjust terminal for mobile */
    .terminal-container {
        margin-top: 1rem;
    }

    .terminal-body {
        max-height: 250px;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.4rem;
    }

    .name-title {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .nav-menu {
        gap: 0.8rem;
    }

    .nav-link {
        font-size: 0.9rem;
    }

    .nav-box {
        min-height: 70px;
        padding: 1rem;
    }

    .box-text {
        font-size: 1rem;
    }

    .github-icon,
    .linkedin-icon {
        width: 24px;
        height: 24px;
    }

    /* Better spacing for project/blog cards on small screens */
    .project-card,
    .list-item {
        padding: 1rem;
    }
}

/* About page specific styles */
.about-layout {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 2.5rem;
    align-items: start;
}

.about-section {
    padding: 0.25rem 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-title .dot {
    color: var(--accent-color);
    font-weight: 900;
}

.education-entry {
    border-left: 3px solid var(--border-color);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    background: transparent;
}

.skill-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-box {
    border: 1px solid var(--border-color);
    padding: 1rem;
    background: var(--bg-secondary);
}

.chip {
    display: inline-block;
    padding: 0.28rem 0.6rem;
    margin: 0.25rem 0.25rem 0 0;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.85rem;
}

.cert-list details {
    border: 1px solid var(--border-color);
    padding: 0.6rem 1rem;
    margin-bottom: 0.6rem;
    background: var(--bg-secondary);
}

.profile-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
}

.profile-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: #0f0f0f;
    border: 1px solid var(--border-color);
}

.profile-meta {
    color: var(--text-muted);
    font-size: 0.95rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
}

.core-focus {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

@media (max-width: 1024px) {
    .about-layout {
        grid-template-columns: 1fr;
    }
}

/* Projects grid and card styles */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.project-card {
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.25rem;
}

@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* Project detail page tweaks */
.project-detail-left {
    color: var(--text-muted);
}

.project-detail-left h1 {
    color: var(--accent-color);
}

.project-meta {
    background: transparent;
}

/* Enhanced project detail page styles */
.project-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.project-container {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.6rem;
}

.project-title {
    font-size: 2rem;
    color: var(--accent-color);
    margin: 0;
}

.project-meta .chip {
    margin: 0.25rem 0.25rem 0 0;
}

.section-heading {
    color: var(--text-primary);
    font-weight: 700;
    margin-top: 1rem;
}

.execution-box {
    border: 1px solid var(--border-color);
    background: var(--terminal-bg);
    padding: 1rem;
    color: var(--terminal-text);
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    margin-top: 0.6rem;
}

@media (max-width: 1024px) {
    .project-container {
        grid-template-columns: 1fr;
    }

    .project-wrapper {
        border: none;
        padding: 0;
    }
}