/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-lime: #d8ff3e;
    --accent-coral: #ff775f;
    --accent-cyan: #63ddff;
    --border-color: #3a3a3a;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --nav-height: 70px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.95);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: var(--nav-height);
    max-width: 1400px;
    margin: 0 auto;
}

.brand-label {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.brand-prefix {
    color: var(--accent-lime);
    font-weight: 700;
    font-size: 1.2rem;
}

.brand-name {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.nav-sequence {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-entry {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
    letter-spacing: 0.02em;
}

.nav-entry:hover {
    color: var(--accent-lime);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.toggle-line {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: background-color 0.3s ease;
}

.menu-toggle:hover .toggle-line {
    background-color: var(--accent-lime);
}

/* Hero Banner */
.hero-banner {
    margin-top: var(--nav-height);
    padding: 8rem 2rem 6rem;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-heading {
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-intro {
    display: block;
    color: var(--text-secondary);
    font-size: clamp(1rem, 3vw, 1.5rem);
    font-weight: 400;
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.hero-name {
    color: var(--accent-lime);
    display: block;
    background: linear-gradient(90deg, var(--accent-lime), var(--accent-coral), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-note {
    color: var(--text-secondary);
    font-size: clamp(1rem, 3vw, 1.3rem);
    max-width: 600px;
    margin: 0 auto;
}

/* Sections */
section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    text-align: center;
}

.section-label {
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.section-id {
    color: var(--accent-lime);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.section-head::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
    margin-top: 1.5rem;
}

/* About Section */
.about-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.about-text {
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Now / Next Section */
.focus-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.focus-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.focus-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-lime);
}

.focus-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.focus-badge.now {
    color: var(--accent-lime);
    background-color: rgba(216, 255, 62, 0.1);
    border: 1px solid var(--accent-lime);
}

.focus-badge.next {
    color: var(--accent-coral);
    background-color: rgba(255, 119, 95, 0.1);
    border: 1px solid var(--accent-coral);
}

.focus-title {
    color: var(--text-primary);
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.focus-body {
    color: var(--text-secondary);
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    line-height: 1.8;
}

/* Project Lab Section */
.entries-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.entry-list {
    display: grid;
    gap: 2rem;
}

.project-entry {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: border-color 0.3s ease;
}

.project-entry:hover {
    border-color: var(--accent-cyan);
}

.project-title {
    color: var(--text-primary);
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.project-icon {
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

.project-body {
    color: var(--text-secondary);
    font-size: clamp(0.9rem, 2vw, 1.05rem);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-coral);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.project-link-note {
    display: inline-block;
    margin-left: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.project-badge-experimental {
    color: var(--accent-coral);
    background-color: rgba(255, 119, 95, 0.1);
    border: 1px solid var(--accent-coral);
    border-radius: 20px;
    padding: 0.25rem 0.75rem;
    font-weight: 700;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
}

/* Interests Section */
.interests-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.interests-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.interest-item {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.interest-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-lime);
}

.interest-title {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.interest-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Contact Section */
.contact-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.contact-text {
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.8;
    margin-bottom: 2rem;
    text-align: center;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-method {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: clamp(1rem, 2vw, 1.15rem);
    font-weight: 600;
    padding: 1rem 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-method:hover {
    border-color: var(--accent-coral);
    color: var(--accent-coral);
    transform: translateY(-2px);
}

/* Footer */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.footer-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: clamp(0.9rem, 2vw, 1rem);
}

.footer-label {
    color: var(--accent-cyan);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.footer-status {
    color: var(--accent-lime);
    font-weight: 600;
}

.footer-build {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
}

.footer-year {
    color: var(--accent-coral);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --nav-height: 65px;
    }

    .nav-bar {
        padding: 0 1.5rem;
    }

    .nav-sequence {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-banner {
        padding: 6rem 1.5rem 4rem;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .about-content,
    .entries-container,
    .interests-container,
    .contact-content {
        padding: 2rem 1.5rem;
    }

    .footer-content {
        gap: 0.75rem;
    }

    .contact-methods {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .focus-grid,
    .interests-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .brand-label {
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
    }

    .hero-heading {
        letter-spacing: -0.01em;
    }

    .section-id {
        font-size: 0.65rem;
    }

    .footer-line {
        flex-direction: column;
        gap: 0.25rem;
    }

    .footer-content {
        text-align: center;
    }
}