/* ==========================================================================
   Alex Romanika — DevOps & Infrastructure Engineer Design System
   ========================================================================== */

:root {
    --bg-main: #06080e;
    --bg-card: rgba(13, 17, 26, 0.85);
    --bg-card-hover: rgba(20, 27, 42, 0.95);
    --bg-glass: rgba(10, 13, 20, 0.8);
    --bg-terminal: rgba(5, 7, 12, 0.92);
    
    --border-color: rgba(0, 243, 255, 0.15);
    --border-hover: rgba(0, 243, 255, 0.45);
    --border-glow: rgba(0, 255, 136, 0.3);
    
    --text-primary: #f0f4f8;
    --text-secondary: #8fa0b5;
    --text-muted: #4e6178;
    
    --neon-cyan: #00f3ff;
    --neon-green: #00ff88;
    --neon-purple: #9d4edd;
    --neon-orange: #ff6b00;
    
    --gradient-devops: linear-gradient(135deg, #00f3ff 0%, #00ff88 100%);
    --gradient-terminal: linear-gradient(180deg, rgba(0, 243, 255, 0.08) 0%, rgba(0,0,0,0) 100%);
    --shadow-neon: 0 0 25px rgba(0, 243, 255, 0.25);
    --shadow-card: 0 15px 40px rgba(0, 0, 0, 0.6);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    --font-heading: 'Oswald', 'Montserrat', sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-main: #f0f4f8;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: #ffffff;
    --bg-glass: rgba(240, 244, 248, 0.9);
    --bg-terminal: #0d111a;
    
    --border-color: rgba(0, 150, 200, 0.2);
    --border-hover: rgba(0, 180, 216, 0.5);
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Scanline Effect Overlay */
body::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 243, 255, 0.015) 2px,
        rgba(0, 243, 255, 0.015) 4px
    );
    pointer-events: none;
    z-index: 999;
}

/* Canvas Background */
#cyber-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Typography & Utility */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    letter-spacing: 0.03em;
    line-height: 1.2;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-devops);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.font-mono {
    font-family: var(--font-mono);
}

/* Header Navigation */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-terminal-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--gradient-devops);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #05070c;
    font-family: var(--font-mono);
    font-weight: 900;
    font-size: 1.25rem;
    box-shadow: var(--shadow-neon);
}

.brand-info {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.brand-tag {
    font-size: 0.75rem;
    color: var(--neon-green);
    font-family: var(--font-mono);
    font-weight: 600;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0%;
    height: 2px;
    background: var(--gradient-devops);
    transition: var(--transition);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-badge-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--neon-green);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    animation: blinkGlow 2s infinite;
}

@keyframes blinkGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(0.85); }
}

.theme-toggle-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px; height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    border-color: var(--neon-cyan);
    box-shadow: var(--shadow-neon);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    padding-top: 140px;
    padding-bottom: 90px;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
}

.hero-badge-devops {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: rgba(0, 243, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--neon-cyan);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.6rem;
    text-transform: uppercase;
    margin-bottom: 20px;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 44px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-mono);
}

.btn-devops {
    background: var(--gradient-devops);
    color: #05070c;
    box-shadow: var(--shadow-neon);
}

.btn-devops:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 35px rgba(0, 243, 255, 0.45);
}

.btn-outline-devops {
    background: var(--bg-card);
    color: var(--neon-cyan);
    border: 1px solid var(--border-color);
}

.btn-outline-devops:hover {
    border-color: var(--neon-cyan);
    background: rgba(0, 243, 255, 0.1);
    transform: translateY(-3px);
}

/* Server Metrics Bar */
.server-metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding-top: 28px;
    border-top: 1px solid var(--border-color);
}

.metric-item {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--neon-green);
}

.metric-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

/* Live Terminal Component */
.terminal-window {
    background: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    backdrop-filter: blur(12px);
}

.terminal-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.terminal-dots {
    display: flex;
    gap: 8px;
}

.t-dot { width: 12px; height: 12px; border-radius: 50%; }
.t-dot.r { background: #ff5f56; }
.t-dot.y { background: #ffbd2e; }
.t-dot.g { background: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text-primary);
    min-height: 380px;
    max-height: 480px;
    overflow-y: auto;
}

.term-line {
    margin-bottom: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.term-prompt {
    color: var(--neon-cyan);
    font-weight: 700;
}

.term-cmd {
    color: #ffffff;
}

.term-output {
    color: var(--text-secondary);
    padding-left: 14px;
    border-left: 2px solid rgba(0, 243, 255, 0.2);
    width: 100%;
    margin-top: 4px;
    white-space: pre-wrap;
}

.term-caret {
    display: inline-block;
    width: 8px;
    height: 1.1em;
    background: var(--neon-green);
    vertical-align: middle;
    animation: caretPulse 1s infinite;
}

@keyframes caretPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.term-quick-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.term-btn {
    background: rgba(0, 243, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--neon-cyan);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.term-btn:hover {
    background: var(--neon-cyan);
    color: #05070c;
}

/* Sections Shared */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 60px;
}

.section-tag {
    font-family: var(--font-mono);
    color: var(--neon-cyan);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 2.8rem;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* DevOps Skills & Tech Stack Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-devops);
    opacity: 0;
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 243, 255, 0.15);
}

.skill-card:hover::before {
    opacity: 1;
}

.skill-icon {
    font-size: 2.2rem;
    margin-bottom: 20px;
    display: inline-block;
}

.skill-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.skill-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--neon-cyan);
}

/* Interactive CI/CD Pipeline Visualizer */
.pipeline-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-card);
}

.pipeline-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.pipeline-step {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 18px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.pipeline-step:hover {
    border-color: var(--neon-green);
    background: rgba(0, 255, 136, 0.05);
    transform: translateY(-5px);
}

.pipeline-step-num {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--neon-green);
    font-weight: 700;
    margin-bottom: 8px;
}

.pipeline-step-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.pipeline-step-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* Subsites Showcase Section */
.subsites-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.subsite-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-card);
}

.subsite-card:hover {
    border-color: var(--neon-cyan);
    transform: translateY(-8px);
    box-shadow: 0 20px 45px rgba(0, 243, 255, 0.2);
}

.subsite-badge {
    align-self: flex-start;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 20px;
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-cyan);
    border: 1px solid var(--border-color);
}

.subsite-title {
    font-size: 1.8rem;
    margin-bottom: 14px;
    text-transform: uppercase;
}

.subsite-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 28px;
}

.subsite-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 30px;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-card);
}

.contact-link-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    margin-bottom: 14px;
}

.contact-link-item:hover {
    border-color: var(--neon-cyan);
    background: rgba(0, 243, 255, 0.06);
    transform: translateX(6px);
}

.contact-icon {
    font-size: 1.5rem;
    width: 44px; height: 44px;
    border-radius: var(--radius-md);
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Footer */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-grid, .contact-grid, .subsites-grid {
        grid-template-columns: 1fr;
    }
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pipeline-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 80px; left: 0; right: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
    }
    .nav-menu.active { display: flex; }
    .mobile-menu-btn { display: block; }
    .skills-grid, .pipeline-steps { grid-template-columns: 1fr; }
    .hero-title { font-size: 2.2rem; }
    .footer-grid { grid-template-columns: 1fr; }
}