/* ==================== CSS VARIABLES ==================== */
:root {
    /* Colors */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --bg-card: #0d0d0d;
    
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;
    
    --accent-primary: #00ff00;
    --accent-secondary: #00cc00;
    --accent-glow: rgba(0, 255, 0, 0.15);
    --accent-highlight: rgba(0, 255, 0, 0.08);
    
    --border-color: #222222;
    --border-accent: #333333;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
    
    --fs-xs: 0.65rem;
    --fs-sm: 0.75rem;
    --fs-base: 0.875rem;
    --fs-md: 1rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 2rem;
    --fs-3xl: 2.5rem;
    --fs-4xl: 3.5rem;
    --fs-hero: clamp(2.5rem, 8vw, 5rem);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.1s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.4s ease;
    
    /* Layout */
    --max-width: 900px;
    --container-padding: clamp(1rem, 5vw, 3rem);
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--bg-secondary);
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
}

body {
    font-family: var(--font-mono);
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ==================== LOADER ==================== */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader__text {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}

.loader__line {
    opacity: 0;
    animation: loaderFade 0.5s ease forwards;
}

.loader__line:nth-child(1) { animation-delay: 0.1s; }
.loader__line:nth-child(2) { animation-delay: 0.4s; }
.loader__line:nth-child(3) { animation-delay: 0.7s; }
.loader__line:nth-child(4) { animation-delay: 1s; }

.loader__line--success {
    color: var(--accent-primary);
    font-weight: 700;
}

@keyframes loaderFade {
    to { opacity: 1; }
}

/* ==================== CONTAINER ==================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--container-padding);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.container.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== HEADER ==================== */
.header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-3xl);
    min-height: 60px;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-lg);
    font-weight: 700;
}

.header__prompt {
    color: var(--accent-primary);
}

.header__name {
    letter-spacing: -0.02em;
}

.accent {
    color: var(--accent-primary);
}

.cursor {
    color: var(--accent-primary);
    animation: blink 1s step-end infinite;
}

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

/* ==================== NAVIGATION ==================== */
.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm) var(--space-md);
}

.nav__label {
    color: var(--text-muted);
    font-size: var(--fs-xs);
    display: none;
}

@media (min-width: 768px) {
    .nav__label {
        display: inline;
    }
}

.nav__link {
    position: relative;
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    transition: var(--transition-fast);
    min-width: 80px;
    text-align: center;
}

.nav__link::before {
    content: '$_' attr(data-cmd) ' ';
    color: var(--text-muted);
    opacity: 0;
    transition: var(--transition-fast);
}

.nav__link:hover {
    color: var(--bg-primary);
    background: var(--accent-primary);
}

.nav__link:hover::before {
    opacity: 1;
    color: var(--bg-primary);
}

/* ==================== LOCALE SWITCH ==================== */
.locale-switch {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
    font-size: var(--fs-xs);
}

.locale-btn {
    color: var(--text-muted);
    padding: var(--space-xs);
    transition: var(--transition-fast);
}

.locale-btn:hover {
    color: var(--text-primary);
}

.locale-btn.active {
    color: var(--accent-primary);
    font-weight: 700;
}

.locale-divider {
    color: var(--text-muted);
}

/* ==================== HERO ==================== */
.hero {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-2xl);
    align-items: start;
    padding: var(--space-3xl) 0;
}

@media (max-width: 640px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.hero__avatar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.hero__avatar {
    width: 140px;
    height: 140px;
    border: 2px solid var(--accent-primary);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero__avatar::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg, var(--accent-primary), transparent, var(--accent-primary));
    animation: borderRotate 3s linear infinite;
    z-index: -1;
}

@keyframes borderRotate {
    to { transform: rotate(360deg); }
}

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

.avatar-placeholder {
    text-align: center;
}

.avatar-ascii {
    font-size: var(--fs-xs);
    color: var(--accent-primary);
    white-space: pre;
    line-height: 1.2;
}

.hero__status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-xs);
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { opacity: 0.7; box-shadow: 0 0 0 8px transparent; }
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.hero__greeting {
    font-size: var(--fs-sm);
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    min-height: 1.5em;
}

.hero__name {
    font-size: var(--fs-hero);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-height: 1.1em;
    white-space: nowrap;
}

.hero__subtitle {
    font-size: var(--fs-xl);
    color: var(--text-secondary);
}

.tag {
    color: var(--accent-primary);
}

.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-xl);
    font-size: var(--fs-sm);
}

.meta-item {
    display: flex;
    gap: var(--space-sm);
}

.meta-label {
    color: var(--text-muted);
}

.meta-value {
    color: var(--text-primary);
}

/* ==================== DIVIDER ==================== */
.divider {
    padding: var(--space-2xl) 0;
    text-align: center;
    color: var(--text-muted);
    font-size: var(--fs-xs);
    overflow: hidden;
}

/* ==================== SECTIONS ==================== */
.section {
    padding: var(--space-xl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section__header {
    margin-bottom: var(--space-xl);
    font-size: var(--fs-xl);
    font-weight: 700;
}

.section__comment {
    color: var(--text-muted);
}

.section__tag {
    color: var(--accent-primary);
}

/* ==================== TERMINAL STYLES ==================== */
.terminal-line {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    margin-bottom: var(--space-md);
    font-size: var(--fs-sm);
    overflow-x: auto;
}

.prompt {
    color: var(--accent-primary);
    font-weight: 700;
}

.command {
    color: var(--text-primary);
}

.arg {
    color: var(--text-secondary);
}

.terminal-output {
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-left: 3px solid var(--accent-primary);
}

/* ==================== BIO BLOCK ==================== */
.bio-block {
    margin-bottom: var(--space-xl);
}

.bio-text {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

.bio-text:last-child {
    margin-bottom: 0;
}

/* ==================== EXPERIENCE ==================== */
.exp-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.exp-card {
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.exp-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px var(--accent-glow);
}

.exp-card__header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.exp-card__company {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.exp-card__marker {
    color: var(--accent-primary);
    font-size: var(--fs-xs);
}

.exp-card__title {
    font-size: var(--fs-lg);
    font-weight: 700;
}

.exp-card__period {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
}

.exp-card__role {
    margin-bottom: var(--space-md);
}

.role-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--accent-highlight);
    color: var(--accent-primary);
    font-size: var(--fs-xs);
    font-weight: 500;
}

.exp-card__stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.stack-item {
    font-size: var(--fs-xs);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.exp-card__tasks {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.exp-card__tasks li {
    position: relative;
    padding-left: var(--space-lg);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
}

.exp-card__tasks li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* ==================== EDUCATION ==================== */
.edu-block {
    margin-bottom: var(--space-xl);
}

.edu-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-md) var(--space-lg);
    align-items: center;
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-left: 3px solid var(--accent-primary);
}

@media (max-width: 640px) {
    .edu-item {
        grid-template-columns: 1fr;
    }
}

.edu-year {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
}

.edu-degree {
    font-weight: 700;
    color: var(--text-primary);
}

.edu-place {
    color: var(--text-secondary);
    font-size: var(--fs-sm);
}

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

.project-card {
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.project-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-card__num {
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

.project-card__status {
    font-size: var(--fs-xs);
    padding: var(--space-xs) var(--space-sm);
    font-weight: 700;
}

.project-card__status--live {
    background: var(--accent-primary);
    color: var(--bg-primary);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.project-card__title {
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.project-card__desc {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

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

.project-card__stack span {
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

.project-card__stack span::before {
    content: '#';
    color: var(--accent-primary);
}

.project-card__link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    font-size: var(--fs-sm);
    transition: var(--transition-fast);
    margin-top: auto;
}

.project-card__link:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.project-card__link:hover .link-prompt,
.project-card__link:hover .link-cmd,
.project-card__link:hover .link-arrow {
    color: var(--bg-primary);
}

.link-prompt {
    color: var(--accent-primary);
}

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

.link-arrow {
    color: var(--text-muted);
    margin-left: auto;
}

/* ==================== CONTACT ==================== */
.contact-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

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

.contact-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    position: relative;
    transition: var(--transition-base);
}

.contact-item:hover {
    border-color: var(--accent-primary);
    background: var(--accent-highlight);
}

.contact-item:hover .contact-arrow {
    color: var(--accent-primary);
    transform: translate(2px, -2px);
}

.contact-label {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.contact-value {
    font-size: var(--fs-sm);
    color: var(--text-primary);
    word-break: break-all;
}

.contact-arrow {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    color: var(--text-muted);
    font-size: var(--fs-sm);
    transition: var(--transition-fast);
}

.contact-cta {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--bg-tertiary);
    border: 1px dashed var(--border-accent);
}

.contact-cta p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--accent-primary);
    color: var(--bg-primary);
    font-size: var(--fs-base);
    font-weight: 700;
    text-transform: lowercase;
    transition: var(--transition-fast);
}

.cta-btn:hover {
    background: var(--text-primary);
    transform: scale(1.02);
}

.cta-prompt {
    opacity: 0.7;
}

.cta-cursor {
    animation: blink 1s step-end infinite;
}

/* ==================== FOOTER ==================== */
.footer {
    margin-top: var(--space-4xl);
    padding: var(--space-2xl) 0;
}

.footer__divider {
    text-align: center;
    color: var(--text-muted);
    font-size: var(--fs-xs);
    margin-bottom: var(--space-xl);
    overflow: hidden;
}

.footer__content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm) var(--space-lg);
    font-size: var(--fs-xs);
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.footer__stack {
    color: var(--accent-primary);
}

.footer__ascii {
    text-align: center;
    color: var(--text-muted);
    font-size: var(--fs-xs);
}

.footer__ascii pre {
    display: inline-block;
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: var(--fs-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 100;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav {
        width: 100%;
        justify-content: flex-start;
    }
    
    .locale-switch {
        position: absolute;
        top: var(--space-xl);
        right: var(--container-padding);
    }
    
    .hero__avatar {
        width: 100px;
        height: 100px;
    }
    
    .avatar-ascii {
        font-size: 0.5rem;
    }
}

@media (max-width: 480px) {
    .nav__link::before {
        display: none;
    }
    
    .exp-card__header {
        flex-direction: column;
    }
}

/* ==================== GLITCH EFFECT (OPTIONAL) ==================== */
@keyframes glitch {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
}

.glitch:hover {
    animation: glitch 0.3s ease infinite;
}

/* ==================== SCANLINES (OPTIONAL) ==================== */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    z-index: 9998;
}