:root {
    --bg-main: #030305;
    --bg-offset: #0a0a0f;
    --text-main: #ffffff;
    --text-muted: #8892b0;
    --primary: #326ce5; /* K8s blue */
    --primary-glow: rgba(50, 108, 229, 0.4);
    --accent: #0ea5e9;
    --border: rgba(255, 255, 255, 0.08);
    --success: #27c93f;
    --warning: #ffbd2e;
    --danger: #ff5f56;
}

body.light-mode {
    --bg-main: #ffffff;
    --bg-offset: #f8f9fa;
    --text-main: #0f172a;
    --text-muted: #475569; /* Darkened for better contrast */
    --primary: #326ce5;
    --primary-glow: rgba(50, 108, 229, 0.15);
    --border: rgba(0, 0, 0, 0.1);
    --success: #15803d; /* Safe contrast on white */
    --warning: #b45309; 
    --danger: #b91c1c;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

h1 { font-size: clamp(3.5rem, 6vw, 6rem); }
h2 { font-size: clamp(3rem, 5vw, 5rem); }
h1 span, h2 span { color: var(--primary); text-shadow: 0 0 30px var(--primary-glow); }

.bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Syncopate', sans-serif;
    font-size: clamp(8rem, 20vw, 25rem);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.02);
    z-index: 0;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: all 0.4s ease;
    background: transparent;
    border-bottom: 1px solid transparent;
}
.navbar.scrolled {
    padding: 1rem 5%;
    background: var(--bg-main);
    opacity: 0.95;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Syncopate', sans-serif;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -1px;
}
.logo .dot { color: var(--primary); }
.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}
.nav-links a:hover { color: var(--text-main); }
.nav-btn { font-size: 0.85rem !important; padding: 0.6rem 1.5rem !important; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}
.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 0 20px rgba(50, 108, 229, 0.3);
    border: 1px solid transparent;
}
.btn-primary:hover {
    background: transparent;
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(50, 108, 229, 0.5);
}
.btn-primary::before {
    content: ''; position: absolute; top: 0; left: 0; width: 0; height: 100%;
    background: rgba(255,255,255,0.1); transition: width 0.3s ease; z-index: -1;
}
.btn-primary:hover::before { width: 100%; }

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
}
.btn-outline:hover {
    border-color: var(--text-main);
    background: rgba(150,150,150,0.1); /* Adjusted for both modes */
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}
.theme-toggle-btn:hover {
    background: rgba(150,150,150,0.1);
    transform: rotate(15deg);
}

/* Layout Modules */
.main-wrapper {
    width: 100%;
    position: relative;
}
.kube-module {
    min-height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 6rem 5% 0; /* Nav offset */
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.module-content {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    z-index: 2;
    position: relative;
}

/* Hero Section */
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 2rem 0;
}
.btn-group { display: flex; gap: 1rem; }

/* Terminal */
.terminal-mockup {
    background: var(--bg-offset);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15), 0 0 30px var(--primary-glow);
}
.terminal-header {
    background: rgba(150,150,150,0.05);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    position: relative;
}
.mac-dot { width: 12px; height: 12px; border-radius: 50%; }
.mac-dot.r { background: var(--danger); }
.mac-dot.y { background: var(--warning); }
.mac-dot.g { background: var(--success); }
.terminal-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.terminal-body {
    padding: 2rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    color: var(--text-main); /* Changed to use variable */
    line-height: 1.8;
}
.terminal-body .cmd { color: var(--primary); font-weight: 700; }
.terminal-body .output { color: var(--text-muted); }
.cursor { display: inline-block; width: 8px; height: 18px; background: var(--text-main); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* Split Layouts */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}
.split-layout.reverse .visual-side { order: 2; }
.split-layout.reverse .text-side { order: 1; }

.module-label {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--primary-glow);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    background: rgba(50, 108, 229, 0.05);
}

.spec-list {
    list-style: none;
    margin: 3rem 0;
    border-top: 1px solid var(--border);
}
.spec-list li {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 1.1rem;
}
.spec-label { color: var(--text-muted); }
.spec-value { font-family: 'JetBrains Mono', monospace; color: var(--text-main); font-weight: 500; }
.description { font-size: 1.15rem; color: var(--text-muted); line-height: 1.8; }

/* Visual block animations */
.node-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 3rem;
    background: rgba(150,150,150,0.02);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.node-item {
    aspect-ratio: 1;
    background: rgba(150,150,150,0.05);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1rem 2rem;
    transition: all 0.3s ease;
}

/* Language Selector */
.lang-selector {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.lang-selector:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.lang-selector option {
    background: var(--bg-main);
    color: var(--text-main);
}

/* Animations */
.fade-up { opacity: 0; }
.node-item.active { background: rgba(50, 108, 229, 0.1); border-color: var(--primary); box-shadow: 0 0 20px var(--primary-glow); }

.pipeline-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 4rem;
    background: rgba(150,150,150,0.02);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.pipe-stage {
    padding: 1.5rem 3rem;
    background: var(--bg-offset); /* Changed from hardcoded dark */
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    width: 250px;
    text-align: center;
}
.pipe-line {
    width: 2px;
    height: 40px;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
}
.pipe-stage.deploy { border-color: var(--primary); box-shadow: 0 0 20px var(--primary-glow); color: var(--primary); font-weight: bold;}

/* Projects Stack */
.projects-stack {
    position: relative;
    width: 100%;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}
.project-card {
    position: absolute;
    width: 320px;
    height: 200px;
    background: var(--bg-offset);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    transition: all 0.5s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}
.project-card.back {
    transform: translateZ(-100px) translateY(-50px);
    opacity: 0.1; /* further reduced to prevent bleed */
    z-index: 1;
}
.project-card.middle {
    transform: translateZ(-50px) translateY(-25px);
    opacity: 0.2; /* further reduced to prevent bleed */
    z-index: 2;
}
.project-card.front {
    transform: translateZ(0) translateY(0);
    z-index: 3;
    border-color: var(--primary);
    box-shadow: 0 10px 30px var(--primary-glow);
    background: var(--bg-main); /* solid background to prevent text bleed from cards behind */
}
.card-header {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-muted);
}
.card-metrics {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.card-header.highlight-header {
    color: var(--text-main);
    font-size: 1.5rem;
}
.card-metrics.highlight-text {
    color: var(--primary);
    font-weight: bold;
}
.card-action {
    margin-top: auto;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--success);
    font-family: 'JetBrains Mono', monospace;
    animation: fadePulse 2s infinite;
}

@keyframes fadePulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.spec-value.highlight {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

/* Center Layout - Metrics */
.center-layout { text-align: center; width: 100%; display: flex; flex-direction: column; align-items: center;}
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 8rem;
    width: 100%;
}
.metric {
    padding: 4rem 2rem;
    background: rgba(150,150,150,0.02);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: transform 0.3s;
}
.metric:hover { transform: translateY(-10px); background: rgba(150,150,150,0.04); border-color: var(--primary); }
.metric-number {
    font-size: 5rem;
    font-weight: 700;
    font-family: 'Syncopate', sans-serif;
    line-height: 1;
    margin-bottom: 1rem;
    /* Removed linear gradient text for better dark/light compatibility, or adjust it */
    color: var(--text-main);
}
.metric-label { font-size: 1.1rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 2px; }

.cta-box {
    max-width: 800px;
    margin: 0 auto 6rem;
    padding: 5rem;
    border: 1px solid var(--primary-glow);
    background: radial-gradient(circle at center, rgba(50, 108, 229, 0.1) 0%, transparent 70%);
    border-radius: 8px;
}
.cta-box p { font-size: 1.25rem; color: var(--text-muted); margin: 1.5rem 0 3rem; }

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 5%;
    width: 100%;
    margin-top: auto;
}
.footer-content { display: flex; justify-content: space-between; align-items: center; color: var(--text-muted); font-size: 0.9rem; max-width: 1400px; margin: 0 auto;}
.socials { display: flex; gap: 1.5rem; }
.socials a { color: var(--text-muted); font-size: 1.2rem; transition: color 0.3s; }
.socials a:hover { color: var(--text-main); }

/* Scroll Down Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    opacity: 0.6;
}
.scroll-indicator span { font-size: 0.75rem; letter-spacing: 3px; font-weight: 600; font-family: 'JetBrains Mono', monospace;}
.line-down { width: 1px; height: 60px; background: linear-gradient(to bottom, var(--text-main) 0%, transparent 100%); animation: scroll-down 2s infinite ease-in-out;}
@keyframes scroll-down { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* Responsive */
@media (max-width: 1024px) {
    .hero-content, .split-layout { grid-template-columns: 1fr; gap: 4rem; text-align: center; }
    .split-layout.reverse .visual-side { order: 1; }
    .split-layout.reverse .text-side { order: 2; }
    .bg-text { font-size: 15vw; }
    .metrics-grid { grid-template-columns: 1fr; }
    .metric { padding: 3rem; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .cta-box { padding: 3rem 1.5rem; }
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.5rem; }
    .kube-module { padding-top: 8rem; }
}

/* Skills Section */
.skills-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover, .filter-btn.active {
    border-color: var(--primary);
    color: var(--text-main);
    background: rgba(50, 108, 229, 0.05);
    box-shadow: 0 0 15px var(--primary-glow);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.skill-card {
    background: rgba(150, 150, 150, 0.02);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: default;
    backdrop-filter: blur(5px);
}

.skill-card:hover {
    transform: translateY(-10px);
    background: rgba(150, 150, 150, 0.05);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), 0 0 20px var(--primary-glow);
}

.skill-icon {
    font-size: 2.5rem;
    transition: transform 0.3s ease;
}

.skill-icon-svg,
.skill-icon-img {
    width: 2.5rem;
    height: 2.5rem;
    transition: transform 0.3s ease;
}

.skill-card:hover .skill-icon,
.skill-card:hover .skill-icon-svg,
.skill-card:hover .skill-icon-img {
    transform: scale(1.1);
}

.skill-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.skill-card:hover .skill-name {
    color: var(--text-main);
}

.extra-skill {
    display: none; /* Initially hidden */
}

.extra-skill.show {
    display: flex;
    animation: fadeInScale 0.5s ease forwards;
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.9) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Hide cards that don't match filter */
.skill-card.filtered-out {
    display: none;
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 1rem;
    }
    .skill-icon {
        font-size: 2rem;
    }
}