:root {
    /* --- LIGHT MODE REWORK (The "Paper" Theme) --- */
    --bg-color-light: #f0f2f5;   /* Slightly cooler grey/white to add depth */
    --text-color-light: #111111; /* Absolute Black text for sharpness */
    --accent-color-light: #0066cc; /* Darker "Link Blue" - Readable on white */
    --terminal-header-light: #d1d5db; /* Darker grey header for definition */
    
    --bg-color-dark: #000000; /* Was #1a1a1a */
    --text-color-dark: #e0e0e0;
    --accent-color-dark: #00aaff;
    --terminal-header-dark: #121212; /* Was #2a2a2a */

    --bg-color: var(--bg-color-light);
    --text-color: var(--text-color-light); 
    --accent-color: var(--accent-color-light);
    --terminal-header-color: var(--terminal-header-light);
}

body.dark-mode {
    --bg-color: var(--bg-color-dark);
    --text-color: var(--text-color-dark);
    --accent-color: var(--accent-color-dark);
    --terminal-header-color: var(--terminal-header-dark);
}

html {
    scroll-behavior: smooth;
    box-sizing: border-box;
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Fira Code', monospace;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    font-size: 1.05em; 
}

/* --- ACCESSIBILITY (Focus Ring) --- */
:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
    border-radius: 2px;
}

/* --- LOADER --- */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    z-index: 200;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
    color: var(--accent-color);
}
#loader pre { font-size: 1.05rem; }

/* --- ANIMATIONS --- */
header.unloaded, main.unloaded {
    opacity: 0;
    transform: translateY(20px);
}
header, main {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

/* --- HEADER --- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.05rem 5%;
}

.header-name {
    font-family: 'Fira Code', monospace;
    font-weight: bold;
    font-size: 1.4em;
    color: var(--accent-color);
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 1.5rem;
    transition: color 0.3s ease;
}
nav a:hover { color: var(--accent-color); }

.resume-link {
    color: var(--accent-color) !important;
    border: 1px solid var(--accent-color);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 1.5rem;
    transition: all 0.3s ease;
}

.resume-link:hover {
    background-color: var(--accent-color);
    color: var(--bg-color) !important;
}

/* --- THEME SWITCH --- */
.theme-switcher {
    position: relative;
    display: inline-block;
    width: 52px; height: 26px;
}
.switch input { display:none; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 26px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px; width: 18px;
    left: 4px; bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent-color); }
input:checked + .slider:before { transform: translateX(26px); }

/* --- TERMINAL UI --- */
main { padding: 2.1rem 5%; }

.terminal-window {
    border: 1px solid var(--text-color);
    border-radius: 8px;
    max-width: 1000px; /* Reduced width slightly for better reading */
    margin: 2rem auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    background-color: var(--bg-color);
}

.terminal-header {
    background-color: var(--terminal-header-color);
    padding: 0.5rem;
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.terminal-buttons {
    position: absolute;
    left: 10px; top: 50%;
    transform: translateY(-50%);
}
.terminal-button {
    height: 12px; width: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}
.red { background-color: #ff5f56; }
.yellow { background-color: #ffbd2e; }
.green { background-color: #27c93f; }

.terminal-body {
    padding: 2.5rem;
    height: 70vh;
    overflow-y: auto;
}

.terminal-body h2 {
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: 1.5rem;
    border-bottom: 1px dashed rgba(128,128,128,0.3);
    padding-bottom: 0.5rem;
}
.terminal-body h2::before { content: '> '; }

section { margin-bottom: 4rem; }

/* --- SKILLS GRID --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}
.skill-category h3 {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    opacity: 0.8;
}
.skill-category ul {
    list-style: none;
    padding: 0;
}
.skill-category li {
    padding: 0.3rem 0;
}
.skill-category li::before {
    content: "• ";
    color: var(--accent-color);
}

/* --- PROJECTS & EXPERIENCE --- */
.project-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    background-color: var(--terminal-header-color);
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.2s;
}
.project-item:hover {
    transform: translateX(5px);
}
.project-item-image {
    width: 200px;
    height: 140px;
    object-fit: cover;
    border-radius: 4px;
}
.project-item-content { flex: 1; }
.project-item-content h3 {
    color: var(--accent-color);
    margin: 0 0 0.5rem 0;
}
.role-date {
    font-size: 0.9em;
    font-style: italic;
    margin-bottom: 1rem;
    opacity: 0.8;
}
.project-tags { margin: 1rem 0; }
.project-tags span {
    display: inline-block;
    border: 1px solid var(--accent-color);
    color: var(--text-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}
.project-link {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--bg-color); /* Contrast fix */
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.9rem;
}
.project-link:hover { opacity: 0.9; }

/* --- CERTIFICATES --- */
.certificate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}
.certificate-card {
    border: 1px solid rgba(128,128,128,0.2);
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    background-color: var(--terminal-header-color);
    text-align: center;
    transition: all 0.3s ease;
}
.certificate-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}
.certificate-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1rem;
}
.certificate-title { font-size: 0.9rem; margin: 0; }

/* --- CONTACT --- */
.social-links { margin-top: 1rem; }
.social-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-right: 1.5rem;
    font-size: 1.1rem;
    border-bottom: 1px solid transparent;
}
.social-links a:hover {
    color: var(--accent-color);
    border-bottom: 1px solid var(--accent-color);
}

/* --- MODAL --- */
.modal-overlay {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.85);
    justify-content: center;
    align-items: center;
}
.modal-overlay.visible { display: flex; }

.modal-content {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 2rem;
    border: 1px solid var(--accent-color);
    width: 90%; max-width: 600px;
    border-radius: 8px;
    position: relative;
    text-align: center;
}
.modal-close {
    position: absolute;
    top: 10px; right: 20px;
    font-size: 2rem;
    cursor: pointer;
}
.modal-image {
    max-width: 100%;
    margin-top: 1rem;
    border-radius: 4px;
}

/* --- RESPONSIVE / MOBILE --- */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    nav {
        margin-top: 1rem;
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
    }
    nav a { margin-left: 0; margin-right: 1rem; }
    
    .project-item { flex-direction: column; }
    .project-item-image { width: 100%; height: auto; }
    
    .theme-switcher { position: absolute; top: 1rem; right: 1rem; }
    
    /* Shrink ASCII Art for Mobile to fit vertically/horizontally */
    #loader pre {
        font-size: 0.5rem; 
        line-height: 0.6rem;
        overflow: hidden; 
    }
}