/* =====================================================
   Professional CV Website - Dark Tech Theme
   Color Palette: Black (#0a0a0a), Green (#00ff88), Orange (#ff6b35)
   ===================================================== */

/* =====================================================
   CSS RESET & BASE STYLES
   ===================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

html, body {
    overflow-x: hidden;
}

:root {
    /* Color Palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: #151515;

    --color-accent-primary: #00ff88;
    --color-accent-secondary: #ff6b35;
    --color-accent-dim: rgba(0, 255, 136, 0.1);

    --color-text-primary: #e0e0e0;
    --color-text-secondary: #a0a0a0;
    --color-text-dim: #707070;

    --color-border: #252525;
    --color-border-light: #333333;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

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

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px 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(0, 255, 136, 0.3);

    /* Z-index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #00dd77;
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.title-number {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--color-accent-primary);
}

.title-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--color-border-light), transparent);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
}

.text-highlight {
    color: var(--color-accent-primary);
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    font-family: var(--font-primary);
}

.btn::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: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    background-color: #00dd77;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: var(--color-accent-secondary);
    color: white;
}

.btn-secondary:hover {
    background-color: #ff5722;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.btn-outline:hover {
    background-color: var(--color-accent-dim);
    transform: translateY(-2px);
}

/* =====================================================
   NAVIGATION
   ===================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-md);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-text-primary);
}

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

.brand-name {
    margin: 0 0.25rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-accent-primary);
    transition: all var(--transition-base);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-primary);
}

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

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.circuit-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image:
        radial-gradient(circle at 20% 50%, var(--color-accent-primary) 1px, transparent 1px),
        radial-gradient(circle at 80% 80%, var(--color-accent-secondary) 1px, transparent 1px);
    background-size: 100px 100px;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-greeting {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--color-accent-primary);
    margin-bottom: 1rem;
}

.typing-cursor {
    animation: blink 1s infinite;
}

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

.hero-name {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.name-highlight {
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

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

.title-separator {
    color: var(--color-accent-secondary);
}

.title-elec {
    color: var(--color-accent-secondary);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

@media (max-width: 768px) {
    .hero-cta {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
}

/* Hero Visual - Code Card */
.hero-visual {
    position: relative;
}

.code-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

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

.card-header {
    background-color: var(--color-bg-tertiary);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.card-dots {
    display: flex;
    gap: 0.5rem;
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.card-dots span:nth-child(1) {
    background-color: #ff5f56;
}

.card-dots span:nth-child(2) {
    background-color: #ffbd2e;
}

.card-dots span:nth-child(3) {
    background-color: #27c93f;
}

.card-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.card-body {
    padding: 1.5rem;
}

.card-body pre {
    margin: 0;
}

.card-body code {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.code-keyword {
    color: #ff79c6;
}

.code-variable {
    color: #8be9fd;
}

.code-property {
    color: #50fa7b;
}

.code-string {
    color: #f1fa8c;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-dim);
    font-size: 0.85rem;
    animation: fadeInUp 1s ease 2s both;
    z-index: 10;
}

@media (max-width: 768px) {
    .scroll-indicator {
        bottom: 1.5rem;
        font-size: 0.75rem;
        gap: 0.3rem;
    }
    
    .mouse {
        width: 20px;
        height: 32px;
    }
    
    .wheel {
        width: 2px;
        height: 6px;
        top: 6px;
    }
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-accent-primary);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background-color: var(--color-accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 8px;
    }
    100% {
        opacity: 0;
        top: 20px;
    }
}

/* Fade In Up Animation */
.fade-in-up {
    animation: fadeInUp 0.8s ease both;
}

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

/* =====================================================
   ABOUT SECTION
   ===================================================== */

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-text {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
}

.about-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.25rem;
}

.about-highlights {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.highlight-item {
    display: flex;
    gap: 1rem;
    align-items: start;
    padding: 1.25rem;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.highlight-item:hover {
    border-color: var(--color-accent-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--color-accent-primary);
    min-width: 40px;
}

.highlight-item h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.highlight-item p {
    color: var(--color-text-secondary);
    margin: 0;
    font-size: 0.95rem;
}

/* About Image */
.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    margin-bottom: 2rem;
}

.image-border {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid var(--color-accent-primary);
    border-radius: 8px;
    z-index: 0;
}

.image-placeholder {
    position: relative;
    z-index: 1;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-tertiary));
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    border: 1px solid var(--color-border-light);
    overflow: hidden;
}

.image-placeholder i {
    font-size: 4rem;
    color: var(--color-accent-primary);
    opacity: 0.5;
}

.image-placeholder p {
    color: var(--color-text-dim);
    font-size: 0.9rem;
}

.profile-image {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    object-position: center;
    border-radius: 8px;
    border: 1px solid var(--color-border-light);
}

/* About Stats */
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    background-color: var(--color-bg-card);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 0.5rem;
}

/* =====================================================
   TIMELINE SECTION
   ===================================================== */

.timeline-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--color-border);
}

.timeline-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.timeline-tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-accent-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.timeline-tab:hover,
.timeline-tab.active {
    color: var(--color-accent-primary);
}

.timeline-tab.active::after {
    transform: scaleX(1);
}

.timeline-content {
    position: relative;
}

.timeline {
    display: none;
    position: relative;
    padding-left: 2rem;
}

.timeline.active {
    display: block;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom,
        var(--color-accent-primary),
        var(--color-accent-secondary)
    );
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background-color: var(--color-accent-primary);
    border: 3px solid var(--color-bg-primary);
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 0 4px var(--color-accent-dim);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 var(--color-accent-dim);
    }
    50% {
        box-shadow: 0 0 0 8px var(--color-accent-dim);
    }
}

.timeline-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2rem;
    transition: all var(--transition-base);
}

.timeline-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.timeline-header h3 {
    font-size: 1.4rem;
    color: var(--color-text-primary);
}

.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--color-accent-dim);
    color: var(--color-accent-primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    white-space: nowrap;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .timeline-date {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
        white-space: normal;
        text-align: center;
        min-width: fit-content;
    }
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--color-accent-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .timeline-company {
        font-size: 0.95rem;
        line-height: 1.3;
    }
}

.timeline-location {
    color: var(--color-text-dim);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timeline-description {
    list-style: none;
    margin-bottom: 1.5rem;
}

.timeline-description li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
}

.timeline-description li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
    font-size: 1.2rem;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.4rem 0.8rem;
    background-color: var(--color-bg-tertiary);
    color: var(--color-accent-primary);
    border: 1px solid var(--color-border-light);
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

/* =====================================================
   SKILLS SECTION
   ===================================================== */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.skill-category {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2rem;
    transition: all var(--transition-base);
}

.skill-category:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-md);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-border);
}

.category-header i {
    font-size: 1.8rem;
    color: var(--color-accent-primary);
}

.category-header h3 {
    font-size: 1.4rem;
    color: var(--color-text-primary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    width: 100%;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-size: 1rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

.skill-level {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-accent-primary);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background-color: var(--color-bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: 4px;
    width: 0;
    transition: width 1s ease;
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 2s infinite;
}

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

/* Skill Tags */
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-light);
    border-radius: 6px;
    color: var(--color-text-primary);
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.skill-tag:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.skill-tag i {
    color: var(--color-accent-primary);
    font-size: 1.1rem;
}

/* =====================================================
   PROJECTS SECTION
   ===================================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .projects-grid {
        gap: 1rem;
    }
    
    .project-content {
        padding: 1rem;
    }
    
    .project-image {
        height: 150px;
    }
}

.project-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.project-image {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder i {
    font-size: 4rem;
    color: var(--color-accent-primary);
    opacity: 0.3;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-accent-primary);
    color: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-base);
    text-decoration: none;
}

.project-link:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.project-content {
    padding: 1.5rem;
}

.project-category {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background-color: var(--color-accent-dim);
    color: var(--color-accent-primary);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.project-title {
    font-size: 1.4rem;
    color: var(--color-text-primary);
    margin-bottom: 0.75rem;
}

.project-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    padding: 0.35rem 0.7rem;
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

/* =====================================================
   MOTIVATION SECTION
   ===================================================== */

.motivation-content {
    max-width: 900px;
    margin: 0 auto;
}

.motivation-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent-primary);
    border-radius: 8px;
    padding: 3rem;
    position: relative;
}

.motivation-icon {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 3rem;
    color: var(--color-accent-primary);
    opacity: 0.1;
}

.motivation-text {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

.motivation-intro {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.motivation-text p {
    margin-bottom: 1.5rem;
}

.motivation-text strong {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.motivation-closing {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.motivation-signature {
    margin-top: 2.5rem;
    text-align: center;
}

.signature-line {
    width: 200px;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--color-accent-primary), transparent);
    margin: 0 auto 1rem;
}

.motivation-signature p {
    font-family: var(--font-mono);
    color: var(--color-text-dim);
    font-size: 0.95rem;
    font-style: italic;
}

/* =====================================================
   CERTIFICATES SECTION
   ===================================================== */

.certificates-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.cert-category-title {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cert-category-title i {
    color: var(--color-accent-primary);
    font-size: 1.8rem;
}

.cert-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    gap: 1.25rem;
    transition: all var(--transition-base);
}

.cert-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-accent-dim), transparent);
    border: 2px solid var(--color-accent-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-icon i {
    font-size: 1.8rem;
    color: var(--color-accent-primary);
}

.cert-content h4 {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.cert-issuer {
    color: var(--color-accent-primary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.cert-date {
    color: var(--color-text-dim);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.cert-badge {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    background-color: var(--color-accent-dim);
    color: var(--color-accent-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* =====================================================
   CONTACT SECTION
   ===================================================== */

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all var(--transition-base);
}

.contact-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateX(10px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent-dim), transparent);
    border: 2px solid var(--color-accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.3rem;
    color: var(--color-accent-primary);
}

.contact-details h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-details a,
.contact-details p {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
    margin: 0;
}

.contact-details a:hover {
    color: var(--color-accent-primary);
}

/* Contact Download */
.contact-download {
    margin-bottom: 2rem;
}

.download-card {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-tertiary) 100%);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left var(--transition-slow);
}

.download-card:hover::before {
    left: 100%;
}

.download-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.download-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.download-icon i {
    font-size: 1.8rem;
    color: var(--color-bg-primary);
}

.download-content h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.download-content p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.btn-download {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-base);
    font-size: 0.9rem;
}

.btn-download:hover {
    background: #00e67a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

.btn-download i {
    font-size: 0.85rem;
}

/* Contact Social */
.contact-social {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
}

.contact-social h4 {
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 45px;
    height: 45px;
    border: 2px solid var(--color-border-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 1.2rem;
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    cursor: pointer;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(0, 255, 136, 0.1);
    color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
}

.form-status.error {
    display: block;
    background-color: rgba(255, 107, 53, 0.1);
    color: var(--color-accent-secondary);
    border: 1px solid var(--color-accent-secondary);
}

/* =====================================================
   FOOTER
   ===================================================== */

.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    color: var(--color-text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

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

.footer-section a:hover {
    color: var(--color-accent-primary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-dim);
    font-size: 0.9rem;
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* =====================================================
   BACK TO TOP BUTTON
   ===================================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent-primary);
    color: var(--color-bg-primary);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* =====================================================
   AOS (Animate On Scroll) Alternative
   ===================================================== */

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .hero-visual {
        order: -1;
    }

    .code-card {
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

@media (max-width: 768px) {
    /* Typography */
    .hero-name {
        font-size: 2.2rem;
    }

    .hero-title {
        font-size: 1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.3rem;
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.6;
    }

    .section-title {
        font-size: 1.8rem;
    }

    /* Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background-color: var(--color-bg-secondary);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transition: left var(--transition-base);
        border-top: 1px solid var(--color-border);
        z-index: 1000;
    }

    .nav-menu.active {
        left: 0;
    }

    /* Hero */
    .hero {
        padding: 4rem 0 5rem 0;
    }
    
    .hero-content {
        gap: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 0.75rem;
        margin-bottom: 2rem;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1.25rem;
        font-size: 0.85rem;
    }

    /* Timeline */
    .timeline-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .timeline-tab {
        justify-content: center;
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }

    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .timeline-header h3 {
        font-size: 1.2rem;
        line-height: 1.3;
    }

    .timeline-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .timeline-item {
        margin-bottom: 1.5rem;
    }

    .timeline-description li {
        font-size: 0.9rem;
        line-height: 1.4;
        margin-bottom: 0.5rem;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .project-card {
        margin: 0;
    }
    
    .project-content {
        padding: 1.25rem;
    }
    
    .project-description {
        font-size: 0.85rem;
        line-height: 1.4;
        margin-bottom: 1rem;
    }
    
    .project-image {
        height: 180px;
    }

    /* About */
    .about-content {
        gap: 2rem;
    }
    
    .about-highlights {
        gap: 1.25rem;
        margin-top: 1.5rem;
    }
    
    .about-highlights .highlight-item {
        padding: 1rem;
    }
    
    .about-highlights .highlight-item h4 {
        font-size: 0.95rem;
        margin-bottom: 0.25rem;
    }

    .about-highlights .highlight-item p {
        font-size: 0.8rem;
        line-height: 1.3;
    }

    /* Skills */
    .skill-header .skill-name {
        font-size: 0.9rem;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* Download Card */
    .download-card {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .download-icon {
        width: 50px;
        height: 50px;
    }
    
    .download-icon i {
        font-size: 1.4rem;
    }
    
    .download-content h4 {
        font-size: 1.1rem;
    }
    
    .btn-download {
        padding: 0.75rem 1.25rem;
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 2.5rem;
    }
    
    .section {
        padding: 2.5rem 0;
    }

    .container {
        padding: 0 0.75rem;
    }

    .hero-name {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .hero-title {
        font-size: 0.9rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .timeline-header h3 {
        font-size: 1.1rem;
    }

    .timeline-company {
        font-size: 0.85rem;
        line-height: 1.25;
    }

    .timeline-card {
        padding: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .timeline-item {
        margin-bottom: 1.25rem;
    }
    
    .timeline-description li {
        margin-bottom: 0.4rem;
        line-height: 1.3;
    }

    .timeline-description li {
        font-size: 0.85rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }

    .project-description {
        font-size: 0.85rem;
        line-height: 1.4;
    }

    .skill-category h3 {
        font-size: 1.1rem;
    }

    .motivation-text p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* Download Card */
    .download-card {
        padding: 1.25rem;
    }
    
    .download-icon {
        width: 45px;
        height: 45px;
    }
    
    .download-icon i {
        font-size: 1.2rem;
    }
    
    .download-content h4 {
        font-size: 1rem;
    }
    
    .download-content p {
        font-size: 0.85rem;
    }
    
    .btn-download {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {
    .navbar,
    .scroll-indicator,
    .back-to-top,
    .contact-form,
    .btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        page-break-inside: avoid;
    }
}

/* =====================================================
   ACCESSIBILITY
   ===================================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

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