/* CSS Variables */
:root {
    /* Colors - Strictly monochrome */
    --color-black: #000000;
    --color-near-black: #0a0a0a;
    --color-dark: #111111;
    --color-dark-gray: #1a1a1a;
    --color-mid-gray: #2a2a2a;
    --color-gray: #404040;
    --color-light-gray: #888888;
    --color-off-white: #cccccc;
    --color-white: #ffffff;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-off-white);
    background-color: var(--color-black);
    overflow-x: hidden;
}

/* Particles Canvas */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

/* Selection */
::selection {
    background: var(--color-white);
    color: var(--color-black);
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) var(--space-xl);
    background: linear-gradient(to bottom, var(--color-black) 0%, transparent 100%);
    transition: background var(--transition-base);
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-white);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-light-gray);
    letter-spacing: 0.02em;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--color-white);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-3xl) var(--container-padding);
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-greeting {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-light-gray);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-name {
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.typewriter {
    display: inline;
}

.cursor {
    display: inline-block;
    font-weight: 300;
    color: var(--color-light-gray);
    animation: blink 1s step-end infinite;
}

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

.hero-tagline {
    font-size: 1.125rem;
    font-weight: 300;
    color: var(--color-light-gray);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xl);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.5s;
}

.scroll-indicator span {
    display: block;
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-white) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 0.5; }
    50% { transform: scaleY(0.6); opacity: 1; }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-white);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-mid-gray);
}

.btn-secondary:hover {
    border-color: var(--color-white);
}

.btn-large {
    padding: 1.125rem 3rem;
    font-size: 1rem;
}

/* ===================================
   Sections
   =================================== */
.section {
    position: relative;
    padding: var(--space-3xl) 0;
    z-index: 1;
}

.section-alt {
    background: var(--color-near-black);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.section-number {
    font-size: 0.875rem;
    font-weight: 400;
    font-family: var(--font-mono);
    color: var(--color-light-gray);
}

.section-description {
    font-size: 1rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-xl);
}

/* ===================================
   Skills Grid
   =================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.skill-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-card:hover {
    border-color: var(--color-gray);
    transform: translateY(-4px);
}

.skill-icon {
    width: 40px;
    height: 40px;
    color: var(--color-white);
}

.skill-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-off-white);
    letter-spacing: 0.02em;
}

/* ===================================
   Socials Grid
   =================================== */
.socials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.social-link.visible {
    opacity: 1;
    transform: translateY(0);
}

.social-link:hover {
    border-color: var(--color-gray);
    transform: translateY(-2px);
}

.social-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-off-white);
    transition: color var(--transition-fast);
}

.social-link:hover .social-icon {
    color: var(--color-white);
}

.social-link span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-off-white);
    transition: color var(--transition-fast);
}

.social-link:hover span {
    color: var(--color-white);
}

/* ===================================
   Crypto Grid
   =================================== */
.crypto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.crypto-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
}

.crypto-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.crypto-card:hover {
    border-color: var(--color-gray);
}

.crypto-icon {
    width: 28px;
    height: 28px;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.crypto-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.02em;
}

.crypto-address {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-light-gray);
    word-break: break-all;
    background: var(--color-near-black);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    width: 100%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.crypto-address:hover {
    color: var(--color-off-white);
}

.copy-btn {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-mid-gray);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-light-gray);
}

.copy-btn:hover {
    background: var(--color-gray);
    color: var(--color-white);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

.copy-btn.copied {
    background: var(--color-white);
    color: var(--color-black);
}

/* ===================================
   Projects Grid
   =================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    border-color: var(--color-gray);
    transform: translateY(-4px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
}

.project-folder {
    width: 40px;
    height: 40px;
    color: var(--color-white);
}

.project-links {
    display: flex;
    gap: var(--space-md);
}

.project-links svg {
    width: 20px;
    height: 20px;
    color: var(--color-light-gray);
    transition: color var(--transition-fast);
}

.project-card:hover .project-links svg {
    color: var(--color-white);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.project-description {
    font-size: 0.875rem;
    color: var(--color-light-gray);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-light-gray);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-near-black);
    border-radius: var(--radius-sm);
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--color-light-gray);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--space-xl) 0;
    text-align: center;
    border-top: 1px solid var(--color-dark-gray);
    background: var(--color-near-black);
}

.footer-text {
    font-size: 0.875rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-sm);
}

.footer-highlight {
    color: var(--color-white);
    font-weight: 500;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-gray);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    .nav {
        padding: var(--space-md);
    }
    
    .nav-links {
        gap: var(--space-md);
    }
    
    .nav-links a {
        font-size: 0.75rem;
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .hero {
        padding: var(--space-2xl) var(--container-padding);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .socials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .crypto-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-links {
        display: none;
    }
    
    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }
    
    .skill-card {
        padding: var(--space-md);
    }
    
    .socials-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Project Page Specific
   =================================== */
.project-hero {
    padding: calc(var(--space-3xl) + 80px) var(--container-padding) var(--space-2xl);
    background: var(--color-near-black);
}

.project-hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-lg);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-white);
}

.back-link svg {
    width: 16px;
    height: 16px;
}

.project-hero-title {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.project-hero-description {
    font-size: 1.125rem;
    color: var(--color-light-gray);
    max-width: 700px;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.project-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.project-meta-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-light-gray);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.project-meta-value {
    font-size: 0.875rem;
    color: var(--color-white);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* Gallery */
.gallery-section {
    padding: var(--space-2xl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.gallery-item {
    aspect-ratio: 16/10;
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.gallery-item:hover {
    border-color: var(--color-gray);
    transform: scale(1.02);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray);
    font-size: 0.875rem;
}

/* Gallery Caption */
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: var(--color-off-white);
    font-size: 0.875rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item {
    position: relative;
    cursor: pointer;
}

.gallery-item:hover .gallery-caption {
    opacity: 1;
}

.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal-content {
    max-width: 90%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    animation: modalZoom 0.3s ease;
}

@keyframes modalZoom {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-xl);
    color: var(--color-white);
    font-size: 2.5rem;
    font-weight: 300;
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-light-gray);
}

.modal-caption {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-off-white);
    font-size: 0.875rem;
    text-align: center;
    max-width: 80%;
}

@media (max-width: 768px) {
    .modal-close {
        top: var(--space-md);
        right: var(--space-md);
        font-size: 2rem;
    }
    
    .modal-content {
        max-width: 95%;
        max-height: 80vh;
    }
    
    .modal-caption {
        font-size: 0.75rem;
        bottom: var(--space-md);
    }
}

/* Features */
.features-section {
    padding: var(--space-2xl) 0;
    background: var(--color-near-black);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-dark-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-gray);
}

.feature-icon {
    width: 40px;
    height: 40px;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.feature-description {
    font-size: 0.875rem;
    color: var(--color-light-gray);
    line-height: 1.7;
}

/* Technical Details */
.tech-details-section {
    padding: var(--space-2xl) 0;
}

.tech-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.tech-detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.tech-detail-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-light-gray);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.tech-detail-value {
    font-size: 1rem;
    color: var(--color-white);
}

/* CTA Section */
.cta-section {
    padding: var(--space-2xl) 0;
    background: var(--color-near-black);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.cta-description {
    font-size: 1rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-lg);
}

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