/* ===== ULTRA MODERN DARK MONOCHROME RESUME ===== */
/* NO SCROLL • SINGLE VIEWPORT • GITHUB DARK INSPIRED */

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

:root {
    /* MONOCHROME DARK MODE PALETTE */
    --color-black: #000000;
    --color-dark-1: #0d1117;
    --color-dark-2: #161b22;
    --color-dark-3: #21262d;
    --color-dark-4: #30363d;
    --color-grey-1: #484f58;
    --color-grey-2: #6e7681;
    --color-grey-3: #8b949e;
    --color-grey-4: #c9d1d9;
    --color-light: #e6edf3;
    --color-white: #ffffff;

    /* TYPOGRAPHY */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;

    /* SPACING */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* TRANSITIONS */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* SHADOWS */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 255, 255, 0.1);

    /* BORDER RADIUS */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: var(--font-primary);
    background: var(--color-dark-1);
    color: var(--color-light);
    font-size: 16px;
    line-height: 1.5;
}

/* ===== PARTICLE CANVAS BACKGROUND ===== */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.4;
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
}

/* ===== MAIN CONTAINER ===== */
.main-container {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 10;
    background: linear-gradient(135deg, var(--color-dark-1) 0%, var(--color-dark-2) 100%);
}

/* ===== FIXED HEADER ===== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-dark-4);
    position: relative;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar {
    position: relative;
}

.avatar-glow {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-4));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-light);
    border: 2px solid var(--color-dark-4);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-glow);
}

.avatar-glow:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    border-color: var(--color-grey-3);
}

.name-section .name {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin: 0;
}

.name-section .title {
    font-size: 0.9rem;
    color: var(--color-grey-3);
    margin: 0;
    font-weight: var(--font-weight-medium);
}

/* ===== NAVIGATION TABS ===== */
.nav-tabs {
    display: flex;
    background: var(--color-dark-3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    border: 1px solid var(--color-dark-4);
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--color-grey-3);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-smooth);
}

.nav-tab:hover::before {
    left: 100%;
}

.nav-tab:hover {
    color: var(--color-light);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    background: var(--color-dark-4);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.nav-tab i {
    font-size: 1rem;
}

/* ===== HEADER RIGHT ===== */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.contact-links {
    display: flex;
    gap: var(--spacing-sm);
}

.contact-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-md);
    color: var(--color-grey-3);
    text-decoration: none;
    transition: var(--transition-smooth);
    font-size: 1rem;
}

.contact-link:hover {
    background: var(--color-dark-4);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-md);
    color: var(--color-grey-3);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.theme-toggle:hover {
    background: var(--color-dark-4);
    color: var(--color-white);
}

/* ===== MAIN CONTENT AREA ===== */
.content {
    flex: 1;
    position: relative;
    overflow: hidden;
}

/* ===== SECTIONS ===== */
.section {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transform: translateX(50px);
    transition: all var(--transition-slow);
    display: none;
    overflow: hidden;
    box-sizing: border-box;
}

.section-content {
    height: 100%;
    padding: var(--spacing-xl);
    padding-bottom: calc(var(--spacing-xl) + var(--spacing-lg));
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-sizing: border-box;
}

.section.active {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    animation: fadeInUp 0.8s ease-out;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.section-title i {
    font-size: 2rem;
    color: var(--color-grey-3);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
}

/* ===== HOME SECTION ===== */
.home-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    flex: 1;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-black);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    animation: fadeInLeft 0.8s ease-out;
}

.code-bracket {
    color: var(--color-grey-3);
    font-weight: var(--font-weight-light);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-grey-3);
    margin-bottom: var(--spacing-xl);
    font-weight: var(--font-weight-medium);
    animation: fadeInLeft 0.8s ease-out 0.2s both;
}

.hero-description {
    margin-bottom: var(--spacing-xxl);
    animation: fadeInLeft 0.8s ease-out 0.4s both;
}

.hero-description p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-grey-4);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
}

.stat-item:hover {
    background: var(--color-dark-4);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: var(--font-weight-black);
    color: var(--color-white);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
}

/* ===== HERO VISUAL ===== */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease-out 0.3s both;
}

.terminal-window {
    width: 100%;
    max-width: 500px;
    background: var(--color-black);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-dark-4);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-dark-2);
    border-bottom: 1px solid var(--color-dark-4);
}

.terminal-controls {
    display: flex;
    gap: var(--spacing-xs);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--color-grey-1);
}

.terminal-dot.red { background: #666; }
.terminal-dot.yellow { background: #888; }
.terminal-dot.green { background: #aaa; }

.terminal-title {
    font-size: 0.9rem;
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
}

.terminal-content {
    padding: var(--spacing-lg);
    font-family: 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.terminal-line {
    margin-bottom: var(--spacing-sm);
}

.prompt {
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
}

.command {
    color: var(--color-white);
    margin-left: var(--spacing-xs);
}

.terminal-output {
    color: var(--color-grey-4);
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.terminal-line.typing .command {
    animation: typeWriter 3s steps(25) infinite;
}

.cursor {
    color: var(--color-white);
    animation: blink 1s infinite;
}

@keyframes typeWriter {
    0%, 90% { width: 0; }
    100% { width: 100%; }
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ===== FLOATING ICONS ===== */
.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-grey-3);
    animation: float 6s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-icon:nth-child(1) { top: 10%; right: 20%; }
.floating-icon:nth-child(2) { top: 30%; right: 10%; }
.floating-icon:nth-child(3) { bottom: 40%; right: 30%; }
.floating-icon:nth-child(4) { bottom: 20%; right: 15%; }
.floating-icon:nth-child(5) { top: 60%; right: 5%; }
.floating-icon:nth-child(6) { top: 80%; right: 25%; }

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* ===== CONTACT INFO BAR ===== */
.contact-info-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-lg);
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--color-dark-4);
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
}

.contact-item i {
    font-size: 1rem;
    color: var(--color-grey-2);
}

/* ===== EXPERIENCE SECTION ===== */
.experience-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
    flex: 1;
    overflow: hidden;
}

.timeline-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    overflow-y: auto;
    padding-right: var(--spacing-md);
    height: 100%;
}

.timeline-container::-webkit-scrollbar {
    width: 6px;
}

.timeline-container::-webkit-scrollbar-track {
    background: var(--color-dark-3);
    border-radius: var(--radius-sm);
}

.timeline-container::-webkit-scrollbar-thumb {
    background: var(--color-grey-1);
    border-radius: var(--radius-sm);
}

.experience-card {
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-smooth);
    animation: slideInLeft 0.6s ease-out;
}

.experience-card:nth-child(2) { animation-delay: 0.2s; }

.experience-card:hover {
    background: var(--color-dark-4);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.experience-card.current {
    border-color: var(--color-grey-1);
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-4));
}

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

.company-info h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.company {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-grey-4);
    margin-bottom: var(--spacing-xs);
}

.period {
    font-size: 0.9rem;
    color: var(--color-grey-3);
    margin-bottom: var(--spacing-xs);
}

.location {
    font-size: 0.85rem;
    color: var(--color-grey-2);
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-dark-4);
    border: 1px solid var(--color-grey-1);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
}

.achievements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
}

.achievement-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.achievement-item i {
    font-size: 1rem;
    color: var(--color-grey-3);
    margin-top: var(--spacing-xs);
    flex-shrink: 0;
}

.achievement-item span {
    color: var(--color-grey-4);
    line-height: 1.6;
}

/* ===== EXPERIENCE SUMMARY ===== */
.experience-summary {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    overflow-y: auto;
    height: 100%;
}

.summary-card,
.career-timeline {
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    animation: slideInRight 0.6s ease-out;
}

.career-timeline {
    animation-delay: 0.2s;
}

.summary-card h4,
.career-timeline h4 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.metric-value {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.metric-label {
    font-size: 0.9rem;
    color: var(--color-grey-3);
}

.timeline-years {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.year-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
}

.year-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.year-item.active {
    background: var(--color-dark-4);
    border: 1px solid var(--color-grey-1);
}

.year {
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.position {
    font-size: 0.9rem;
    color: var(--color-grey-3);
}

/* ===== ACHIEVEMENTS SECTION ===== */
.achievements-container {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.achievement-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.achievement-tab {
    background: var(--color-dark-3);
    border: 2px solid var(--color-dark-4);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-grey-3);
    cursor: pointer;
    transition: all var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

.achievement-tab:hover {
    background: var(--color-dark-4);
    border-color: var(--color-grey-2);
    color: var(--color-grey-4);
    transform: translateY(-2px);
}

.achievement-tab.active {
    background: var(--color-grey-1);
    border-color: var(--color-grey-3);
    color: var(--color-light);
    box-shadow: var(--shadow-md);
}

.achievement-tab i {
    font-size: 1rem;
}

.achievement-content {
    flex: 1;
    overflow: hidden;
}

.achievement-category {
    display: none;
    height: 100%;
    overflow-y: auto;
}

.achievement-category.active {
    display: block;
}

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

.achievement-card {
    background: var(--color-dark-2);
    border: 2px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-grey-1), var(--color-grey-3));
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

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

.achievement-card:hover {
    border-color: var(--color-grey-2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.achievement-icon {
    width: 60px;
    height: 60px;
    background: var(--color-dark-3);
    border: 2px solid var(--color-grey-1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-smooth);
}

.achievement-icon i {
    font-size: 1.5rem;
    color: var(--color-grey-4);
}

.achievement-card:hover .achievement-icon {
    background: var(--color-grey-1);
    border-color: var(--color-grey-3);
    transform: scale(1.1);
}

.achievement-card:hover .achievement-icon i {
    color: var(--color-light);
}

.achievement-card h3 {
    font-size: 1.2rem;
    color: var(--color-light);
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
}

.achievement-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-grey-4);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-grey-3);
    margin-top: var(--spacing-xs);
}

.achievement-card p {
    color: var(--color-grey-3);
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .achievement-tabs {
        gap: var(--spacing-xs);
    }

    .achievement-tab {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }

    .achievement-tab span {
        display: none;
    }

    .achievement-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-sm);
    }

    .achievement-stats {
        gap: var(--spacing-sm);
    }
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    flex: 1;
    overflow-y: auto;
    padding-right: var(--spacing-md);
}

.projects-grid::-webkit-scrollbar {
    width: 6px;
}

.projects-grid::-webkit-scrollbar-track {
    background: var(--color-dark-3);
    border-radius: var(--radius-sm);
}

.projects-grid::-webkit-scrollbar-thumb {
    background: var(--color-grey-1);
    border-radius: var(--radius-sm);
}

.project-card {
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    animation: fadeInUp 0.6s ease-out;
}

.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.4s; }
.project-card:nth-child(4) { animation-delay: 0.6s; }

.project-card:hover {
    background: var(--color-dark-4);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-card.featured {
    border-color: var(--color-grey-1);
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-4));
}

.project-icon {
    width: 60px;
    height: 60px;
    background: var(--color-dark-4);
    border: 1px solid var(--color-grey-1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-grey-3);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-smooth);
}

.project-card:hover .project-icon {
    transform: scale(1.1);
    color: var(--color-white);
}

.project-content h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.project-type {
    font-size: 0.85rem;
    color: var(--color-grey-3);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.project-description {
    color: var(--color-grey-4);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-dark-4);
    border: 1px solid var(--color-grey-1);
    color: var(--color-grey-4);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
}

.tech-tag:hover {
    background: var(--color-grey-1);
    color: var(--color-white);
}

/* ===== BRIEFCASE TECH ARSENAL SECTION ===== */
.briefcase-container {
    flex: 1;
    overflow-y: auto;
    padding-right: var(--spacing-md);
}

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

.briefcase-header h3 {
    font-size: 1.5rem;
    color: var(--color-grey-4);
    margin-bottom: var(--spacing-sm);
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
}

.briefcase-header p {
    color: var(--color-grey-3);
    font-size: 0.9rem;
    font-style: italic;
}

.briefcase {
    position: relative;
    width: 100%;
    height: 75vh;
    background: var(--color-dark-1);
    border: 4px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), inset 0 0 20px rgba(0,0,0,0.5);
    perspective: 1000px;
}

/* Tech Stack Curtain Effect */
.briefcase {
    position: relative;
    overflow: hidden;
}

.tech-curtain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        var(--color-dark-1) 0%,
        var(--color-dark-2) 20%,
        var(--color-dark-3) 100%
    );
    z-index: 20;
    transition: transform 0.2s ease-out;
    border-bottom: 4px solid var(--color-grey-2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
}

.curtain-handle {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 25px;
    background: linear-gradient(135deg, var(--color-grey-2) 0%, var(--color-grey-1) 50%, var(--color-grey-3) 100%);
    border: 1px solid var(--color-grey-4);
    border-radius: 4px 4px 12px 12px;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 21;
    transition: all 0.2s ease;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
    position: relative;
}

.curtain-handle::after {
    content: "";
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 2px;
    background: var(--color-grey-4);
    border-radius: 1px;
    box-shadow:
        0 4px 0 var(--color-grey-4),
        0 8px 0 var(--color-grey-4);
}

.curtain-handle:hover {
    background: linear-gradient(135deg, var(--color-grey-3) 0%, var(--color-grey-2) 50%, var(--color-grey-4) 100%);
    transform: translateX(-50%) translateY(-1px);
    box-shadow:
        0 3px 6px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
}

.curtain-handle:active {
    cursor: grabbing;
    transform: translateX(-50%) translateY(1px);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        inset 0 -1px 0 rgba(0, 0, 0, 0.4);
}

.curtain-instruction {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--color-grey-3);
    font-family: 'Courier New', monospace;
    z-index: 22;
}

.curtain-instruction h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-grey-4);
}

.curtain-instruction p {
    font-size: 0.9rem;
    opacity: 0.8;
}

@keyframes briefcaseShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px) rotate(-0.5deg); }
    75% { transform: translateX(2px) rotate(0.5deg); }
}

@keyframes briefcaseOpen {
    0% {
        transform: rotateX(0deg);
        opacity: 0.3;
    }
    30% {
        transform: rotateX(-15deg);
        opacity: 0.6;
    }
    60% {
        transform: rotateX(-8deg);
        opacity: 0.8;
    }
    100% {
        transform: rotateX(0deg);
        opacity: 1;
    }
}

@keyframes lockPop {
    0% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(1.3) rotate(10deg);
        opacity: 0.7;
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
}

@keyframes exteriorGlow {
    0% {
        box-shadow: none;
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
    }
    100% {
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    }
}

@keyframes foamSlide {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(-5px);
        opacity: 0.8;
    }
}

@keyframes labelFlicker {
    0%, 100% {
        opacity: 1;
        text-shadow: none;
    }
    50% {
        opacity: 0.8;
        text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
    }
}

/* Briefcase Exterior Details */
.briefcase-exterior {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

.briefcase-lock {
    position: absolute;
    top: 20px;
    width: 30px;
    height: 20px;
    background: var(--color-grey-1);
    border: 2px solid var(--color-grey-3);
    border-radius: var(--radius-sm);
}

.left-lock { left: 30%; }
.right-lock { right: 30%; }

.briefcase-handle {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 20px;
    background: var(--color-grey-1);
    border: 2px solid var(--color-grey-3);
    border-radius: 10px;
    border-bottom: none;
}

.briefcase-corner {
    position: absolute;
    width: 15px;
    height: 15px;
    border: 2px solid var(--color-grey-2);
    background: var(--color-dark-3);
}

.tl-corner { top: 10px; left: 10px; }
.tr-corner { top: 10px; right: 10px; }
.bl-corner { bottom: 10px; left: 10px; }
.br-corner { bottom: 10px; right: 10px; }

/* Briefcase Interior */
.briefcase-interior {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--color-dark-2);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    box-sizing: border-box;
    overflow-y: auto;
    opacity: 0.3;
    transition: opacity 0.3s ease;
}

/* Make briefcase fully visible after opening */
.briefcase.opening .briefcase-interior,
.briefcase.opened .briefcase-interior {
    opacity: 1 !important;
}

/* Weapon Slots Reveal Animation */
.briefcase.opening .weapon-slot {
    animation: weaponReveal 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px) scale(0.8);
}

/* Keep weapon slots fully visible after opening */
.briefcase.opened .weapon-slot {
    opacity: 1 !important;
    transform: translateY(0) scale(1) !important;
}

.briefcase.opening .weapon-slot:nth-child(1) { animation-delay: 0.8s; }
.briefcase.opening .weapon-slot:nth-child(2) { animation-delay: 0.9s; }
.briefcase.opening .weapon-slot:nth-child(3) { animation-delay: 1.0s; }
.briefcase.opening .weapon-slot:nth-child(4) { animation-delay: 1.1s; }
.briefcase.opening .weapon-slot:nth-child(5) { animation-delay: 1.2s; }

.briefcase.opening .weapon-compartment:nth-child(1) .weapon-slot { animation-delay: 0.8s; }
.briefcase.opening .weapon-compartment:nth-child(2) .weapon-slot { animation-delay: 1.0s; }
.briefcase.opening .weapon-compartment:nth-child(3) .weapon-slot { animation-delay: 1.2s; }

@keyframes weaponReveal {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Foam Inserts */
.foam-top {
    background: var(--color-dark-3);
    border: 1px dashed var(--color-grey-2);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    height: 40px;
    flex-shrink: 0;
}

.briefcase-label {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-grey-4);
    letter-spacing: 1px;
}

.foam-bottom {
    background: var(--color-dark-3);
    border: 1px dashed var(--color-grey-2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    height: 50px;
    flex-shrink: 0;
}

/* Bootstrap-style rows and columns */
.briefcase-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.briefcase-col {
    flex: 1;
    min-width: 0;
}

.briefcase-stats {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-grey-2);
    font-family: 'Courier New', monospace;
}

.stat-value {
    display: block;
    font-size: 0.8rem;
    color: var(--color-grey-4);
    font-weight: var(--font-weight-bold);
    font-family: 'Courier New', monospace;
}

/* Weapon Compartments */
.weapon-compartment {
    background: var(--color-dark-1);
    border: 2px solid var(--color-dark-4);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    position: relative;
    overflow: visible;
    min-height: 120px;
}

.compartment-label {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-dark-1);
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-grey-3);
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

/* Weapon Slots */
.weapon-slot {
    background: var(--color-dark-3);
    border: 2px solid;
    border-radius: var(--radius-md);
    padding: 12px 8px;
    margin: 6px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: visible;
    min-height: 90px;
    flex: 1;
}

.weapon-slot:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.expert-weapon {
    border-color: var(--color-white);
    color: var(--color-white);
}

.advanced-weapon {
    border-color: var(--color-grey-3);
    color: var(--color-grey-3);
}

.ai-weapon {
    background: linear-gradient(45deg, var(--color-dark-3), var(--color-dark-4));
}

.cloud-weapon {
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-4));
}

.weapon-icon {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.weapon-name {
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 3px;
    line-height: 1.1;
    text-align: center;
}

.weapon-ammo {
    font-size: 0.6rem;
    color: var(--color-grey-2);
    font-family: 'Courier New', monospace;
}

/* Small weapons for bottom compartments */
.small-weapon {
    padding: 8px;
    margin: 4px;
    min-height: 75px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.small-weapon .weapon-icon {
    font-size: 1rem;
    margin-bottom: 4px;
    flex-shrink: 0;
}

.small-weapon .weapon-name {
    font-size: 0.7rem;
    line-height: 1.1;
    word-break: break-word;
    text-align: center;
    flex-shrink: 0;
}

.weapon-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.weapon-row .weapon-slot {
    flex: 1;
    margin: 0;
}

/* Weapon Slot Hover Effects */
.expert-weapon:hover {
    border-color: var(--color-white);
    color: var(--color-white);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.advanced-weapon:hover {
    border-color: var(--color-grey-4);
    color: var(--color-grey-4);
    box-shadow: 0 0 10px rgba(201, 209, 217, 0.2);
}

/* Ammo Counter Animation */
.weapon-slot:hover .weapon-ammo {
    animation: ammoCount 0.5s ease-in-out;
}

@keyframes ammoCount {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; transform: scale(1.1); }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .briefcase-interior {
        grid-template-areas:
            "foam-top"
            "left-comp"
            "center-comp"
            "right-comp"
            "bottom-left"
            "bottom-center"
            "bottom-right"
            "foam-bottom";
        grid-template-columns: 1fr;
        grid-template-rows: 40px repeat(6, 1fr) 60px;
    }

    .weapon-row {
        flex-direction: column;
    }

    .briefcase {
        height: 90vh;
    }
}

.tech-stack-grid::-webkit-scrollbar {
    width: 6px;
}

.tech-stack-grid::-webkit-scrollbar-track {
    background: var(--color-dark-3);
    border-radius: var(--radius-sm);
}

.tech-stack-grid::-webkit-scrollbar-thumb {
    background: var(--color-grey-1);
    border-radius: var(--radius-sm);
}

.tech-category {
    background: var(--color-dark-3);
    border: 1px solid var(--color-dark-4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition-smooth);
    animation: fadeInUp 0.6s ease-out;
}

.tech-category:nth-child(2) { animation-delay: 0.2s; }
.tech-category:nth-child(3) { animation-delay: 0.4s; }
.tech-category:nth-child(4) { animation-delay: 0.6s; }
.tech-category:nth-child(5) { animation-delay: 0.8s; }
.tech-category:nth-child(6) { animation-delay: 1.0s; }

.tech-category:hover {
    background: var(--color-dark-4);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.tech-category.featured {
    border-color: var(--color-grey-1);
    background: linear-gradient(135deg, var(--color-dark-3), var(--color-dark-4));
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.category-header i {
    font-size: 1.2rem;
    color: var(--color-grey-3);
}

.category-header h3 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(4px);
}

.tech-item.primary {
    border: 1px solid var(--color-grey-1);
    background: var(--color-dark-4);
}

.tech-item.expert {
    border-left: 3px solid var(--color-white);
}

.tech-item.advanced {
    border-left: 3px solid var(--color-grey-3);
}

.tech-logo {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-4);
    border: 1px solid var(--color-grey-1);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    transition: var(--transition-smooth);
}

.tech-item:hover .tech-logo {
    transform: scale(1.1);
}

.tech-logo.claude {
    background: linear-gradient(135deg, var(--color-grey-1), var(--color-grey-3));
}

.tech-logo.php { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.js { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.go { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.ts { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.laravel { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.react { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.vue { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.node { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.aws { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.gcp { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.docker { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.k8s { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.postgres { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.mysql { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.mongo { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }
.tech-logo.redis { background: linear-gradient(135deg, var(--color-dark-4), var(--color-grey-1)); }

.tech-item span {
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-grey-4);
}

.tech-item.primary span {
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .tech-stack-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-items {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .nav-tabs {
        width: 100%;
    }

    .nav-tab span {
        display: none;
    }

    .home-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .tech-stack-grid {
        grid-template-columns: 1fr;
    }

    .floating-icons {
        display: none;
    }

    .contact-info-bar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .terminal-window {
        font-size: 0.8rem;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .floating-icon {
        animation: none;
    }
}

/* Focus states */
.nav-tab:focus,
.contact-link:focus,
.theme-toggle:focus {
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --color-grey-3: #ffffff;
        --color-grey-4: #ffffff;
    }
}