/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
    /* Basin OS Color Palette - Cyber / Terminal Theme */
    --color-bg-primary: #050505;
    --color-bg-secondary: #0A0F0D;
    --color-bg-tertiary: #111413;

    --color-text-primary: #E0E0E0;
    --color-text-secondary: #889290;
    --color-text-dim: #445550;

    --color-accent-green: #00FF9D;
    /* Cyber Green */
    --color-accent-green-dim: rgba(0, 255, 157, 0.1);
    --color-accent-blue: #00A3FF;
    /* Electric Blue */
    --color-error: #FF3366;

    --color-border: #1F2926;
    --color-border-glow: #00FF9D;

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    /* Effects */
    --glow-text: 0 0 10px rgba(0, 255, 157, 0.5);
    --glow-border: 0 0 15px rgba(0, 255, 157, 0.2);
    --scanline: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));

    --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Pulse Animation for Status Indicators */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        box-shadow: 0 0 0 0 currentColor;
    }

    50% {
        opacity: 0.5;
        box-shadow: 0 0 0 4px transparent;
    }
}

::selection {
    background: var(--color-accent-green);
    color: #000;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* CRT Scanline Effect */
    background-image: var(--scanline);
    background-size: 100% 4px;
}

/* ========================================
   Layout Utilities
   ======================================== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
    border-top: 1px solid var(--color-border);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl) 0;
}

.terminal-window {
    background: rgba(10, 15, 13, 0.95) !important;
    /* Override inline styles */
    border: 1px solid var(--color-border) !important;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5), var(--glow-border) !important;
    backdrop-filter: blur(10px);
    transition: box-shadow var(--transition);
}

.terminal-window:hover {
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.8), var(--glow-border) !important;
    border-color: var(--color-accent-green) !important;
}

.hero-content {
    max-width: 900px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
    max-width: 800px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    color: var(--color-accent-green);
    text-decoration: none;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.938rem;
    border: 1px solid var(--color-accent-green);
    transition: all var(--transition);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 0 10px rgba(0, 255, 157, 0.1);
}

.btn:hover {
    background: var(--color-accent-green-dim);
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.3);
    text-shadow: 0 0 8px rgba(0, 255, 157, 0.8);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
    margin-left: var(--spacing-md);
    box-shadow: none;
}

.btn-secondary:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: none;
}

/* ========================================
   About Section
   ======================================== */
.about-content {
    max-width: 800px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
}

.section-body {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   Experience Section
   ======================================== */
.section-experience {
    background: var(--color-bg-secondary);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
}

.experience-item {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.company {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.role {
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ========================================
   Career Timeline
   ======================================== */
.timeline {
    max-width: 800px;
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-xl));
    top: 0.25rem;
    width: 12px;
    height: 12px;
    background: var(--color-text-primary);
    border-radius: 50%;
    transform: translateX(-5px);
}

.timeline-content {
    padding-left: var(--spacing-md);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.timeline-year {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.timeline-role {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.timeline-achievements {
    list-style: none;
    padding: 0;
}

.timeline-achievements li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.timeline-achievements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-text-primary);
    margin-right: var(--spacing-sm);
}

/* ========================================
   Case Studies / Impact & Results
   ======================================== */
.case-studies-section {
    background: var(--color-bg-secondary);
}

.case-studies-section .section-title,
.section-content .section-title {
    position: sticky;
    top: 0;
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-secondary) 80%, transparent 100%);
    padding: var(--spacing-lg) 0;
    z-index: 10;
    margin-bottom: var(--spacing-lg);
}

.case-studies-section .section-title::before {
    content: '📈';
    margin-right: var(--spacing-sm);
}

.section-content .section-title::before {
    content: '💡';
    margin-right: var(--spacing-sm);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

.case-study {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-xl);
    border-left: 2px solid var(--color-border);
    transition: border-color var(--transition);
}

.case-study:hover {
    border-left-color: var(--color-text-primary);
}

.case-study-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.case-study-company {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.case-study-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.case-study-block h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.case-study-block p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 0.938rem;
}

/* ========================================
   Skills & Technical Stack
   ======================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-left: 2px solid var(--color-border);
}

.skill-category-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    color: var(--color-text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.skill-tag:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
}

/* ========================================
   Speaking & Content Section
   ======================================== */
.section-content {
    background: var(--color-bg-secondary);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.content-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-tertiary);
    border-left: 2px solid var(--color-border);
    transition: border-color var(--transition);
}

.content-card:hover {
    border-left-color: var(--color-text-primary);
}

.content-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.content-type {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.content-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.content-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.938rem;
    display: inline-block;
    transition: transform var(--transition);
}

.content-link:hover {
    transform: translateX(4px);
}

/* ========================================
   Social Share
   ======================================== */
.social-share {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.social-share-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.938rem;
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.938rem;
    transition: all var(--transition);
}

.social-btn:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-text-primary);
}

.social-icon {
    font-size: 1.125rem;
    font-weight: 700;
}

.social-btn.linkedin .social-icon {
    font-family: serif;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-link:hover {
    color: var(--color-text-primary);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .hero {
        min-height: 80vh;
        padding: var(--spacing-2xl) 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-body {
        font-size: 1.125rem;
    }

    .experience-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .timeline {
        padding-left: var(--spacing-lg);
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .social-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .social-btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* ========================================
   Status Badges for Live Demos
   ======================================== */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.status-badge.status-live {
    background: rgba(0, 255, 157, 0.1);
    color: var(--color-accent-green);
    border: 1px solid rgba(0, 255, 157, 0.3);
    box-shadow: 0 0 10px rgba(0, 255, 157, 0.2);
}

.status-badge.status-offline {
    background: rgba(255, 51, 102, 0.1);
    color: var(--color-error);
    border: 1px solid rgba(255, 51, 102, 0.3);
}

.status-badge.status-checking {
    background: rgba(0, 163, 255, 0.1);
    color: var(--color-accent-blue);
    border: 1px solid rgba(0, 163, 255, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

.status-badge.status-unknown {
    background: rgba(136, 146, 144, 0.1);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

/* Project Metrics */
.project-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.metric {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.metric:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-accent-green);
    color: var(--color-text-primary);
}

/* Loading skeleton for metrics */
.metric.loading {
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.03) 0%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.03) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}
/* ========================================
   Unit Economics Billboard
   ======================================== */
.billboard-section {
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.billboard-container {
    background: rgba(10, 15, 13, 0.6);
    border: 1px solid var(--color-accent-blue);
    border-radius: 8px;
    padding: var(--spacing-lg);
    box-shadow: 0 0 30px rgba(0, 163, 255, 0.1);
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.billboard-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-blue), transparent);
    animation: scan-horizontal 3s linear infinite;
}

@keyframes scan-horizontal {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.billboard-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.billboard-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--color-accent-blue);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 10px rgba(0, 163, 255, 0.5);
}

.billboard-subtitle {
    font-family: var(--font-mono);
    color: #445550;
    font-size: 0.9rem;
    background: rgba(0, 163, 255, 0.1);
    display: inline-block;
    padding: 2px 10px;
    border-radius: 4px;
}

.economics-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}

.economics-table th {
    text-align: left;
    font-family: 'Orbitron', sans-serif;
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    padding: var(--spacing-sm);
    text-transform: uppercase;
}

.economics-table td {
    background: rgba(255, 255, 255, 0.02);
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-primary);
    border: 1px solid transparent;
}

.economics-table tr td:first-child {
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
    font-weight: 600;
    color: var(--color-accent-blue);
}

.economics-table tr td:last-child {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

/* Highlight Columns */
.col-nexus {
    color: var(--color-accent-green) !important;
    background: rgba(0, 255, 157, 0.05) !important;
    border: 1px solid rgba(0, 255, 157, 0.2) !important;
}

.col-delta {
    font-weight: 700;
    color: #FFD700 !important;
    text-align: right;
}

.billboard-quote {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    border-top: 1px dashed var(--color-border);
    padding-top: var(--spacing-md);
}

.billboard-quote span {
    color: var(--color-text-primary);
    font-style: italic;
    display: block;
    margin-bottom: 8px;
}

@media (max-width: 768px) {
    .economics-table {
        display: block;
        overflow-x: auto;
    }
}