:root {
    /* Color Palette - Embedded Systems Theme */
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-color: #58a6ff;
    /* Electric Blue */
    --accent-secondary: #238636;
    /* Success Green */
    --border-color: #30363d;
    --glass-bg: rgba(22, 27, 34, 0.7);

    /* Typography */
    --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --section-padding: 5rem 2rem;
    --container-max-width: 1100px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-heading);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography Utilities */
h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.mono {
    font-family: var(--font-mono);
}

/* Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: var(--section-padding);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--accent-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 3rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
    background: #21262d;
    padding: 2px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    font-family: var(--font-mono);
    transition: all 0.2s ease;
}

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    animation: fadeIn 0.8s ease forwards;
}

/* Sections */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
}

.terminal-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    max-width: 800px;
    margin: 0 auto;
}

.terminal-header {
    background: #21262d;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.terminal-title {
    margin-left: auto;
    margin-right: auto;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.terminal-body {
    padding: 2.5rem;
}

.typing-text {
    color: var(--accent-secondary);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    line-height: 1.1;
    margin-bottom: 0.5rem;
    position: relative;
    color: var(--text-primary);
}

/* Glitch Effect */
.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--accent-color);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--accent-secondary);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% {
        clip: rect(31px, 9999px, 94px, 0);
    }

    20% {
        clip: rect(62px, 9999px, 42px, 0);
    }

    40% {
        clip: rect(16px, 9999px, 1px, 0);
    }

    100% {
        clip: rect(54px, 9999px, 47px, 0);
    }
}

@keyframes glitch-anim2 {
    0% {
        clip: rect(65px, 9999px, 100px, 0);
    }

    20% {
        clip: rect(12px, 9999px, 58px, 0);
    }

    40% {
        clip: rect(98px, 9999px, 33px, 0);
    }

    100% {
        clip: rect(87px, 9999px, 64px, 0);
    }
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.tagline {
    color: var(--accent-color);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: 2.5rem;
}

/* Buttons */
.hero-cta {
    display: flex;
    gap: 1.5rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

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

.btn.primary:hover {
    background: #4191e6;
    transform: translateY(-2px);
}

.btn.secondary {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.profile-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: var(--card-bg);
}

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

.stat-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* Experience Section */
.experience-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-color);
}

.exp-company {
    display: block;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.exp-content ul {
    list-style: none;
    margin: 1.5rem 0;
}

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

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

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

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

.skill-category h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: #21262d;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Software Showcase Section */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    display: flex;
    gap: 2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.app-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.app-icon {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    background: #21262d;
    border: 1px solid var(--border-color);
}

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

.app-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.app-info h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.app-info p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.2rem;
    background: var(--accent-secondary);
    color: white;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 6px;
    align-self: flex-start;
    transition: background 0.3s ease;
}

.btn-download:hover {
    background: #2ea043;
}

.btn-download::before {
    content: '↓';
    font-weight: 700;
}

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

.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-secondary);
    border: 1px solid var(--border-color);
    padding: 0.2rem 0.5rem;
}

@media (max-width: 992px) {
    nav {
        flex-direction: column;
        height: auto;
        padding: 1rem 0;
        gap: 1rem;
    }

    .nav-right {
        gap: 1.5rem;
        flex-direction: column;
    }

    header {
        position: static;
    }

    .hero {
        padding-top: 50px;
    }
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.8rem;
    }
}


/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 12px;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    margin-bottom: 1rem;
    outline: none;
}

.modal-input:focus {
    border-color: var(--accent-color);
}

.error-text {
    color: #ff5f56;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    min-height: 1.25rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.modal-footer .btn {
    cursor: pointer;
    border: none;
    font-family: inherit;
}