:root {
    --bg-color: #0a0c10;
    --card-bg: rgba(22, 27, 34, 0.7);
    --text-color: #e6edf3;
    --accent-color: #58a6ff;
    --border-color: #30363d;
    --glow: rgba(88, 166, 255, 0.2);
    --hero-gradient: linear-gradient(135deg, #fff 40%, var(--accent-color) 100%);
    --card-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

[data-theme="light"] {
    --bg-color: #f6f8fa;
    --card-bg: rgba(255, 255, 255, 0.8);
    --text-color: #1f2328;
    --accent-color: #0969da;
    --border-color: #d0d7de;
    --glow: rgba(9, 105, 218, 0.1);
    --hero-gradient: linear-gradient(135deg, #1f2328 40%, var(--accent-color) 100%);
    --card-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 10% 10%, var(--glow) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, var(--glow) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
}

.hero {
    text-align: center;
    margin-bottom: 5rem;
    animation: fadeIn 0.8s ease-out;
}

.profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-color);
    margin-bottom: 1.5rem;
    box-shadow: 0 0 30px var(--glow);
}

h1 {
    font-size: 3rem;
    margin: 0;
    font-weight: 800;
    letter-spacing: -1.5px;
}

h1 span {
    background: var(--hero-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-p {
    font-size: 1.25rem;
    color: var(--text-color);
    opacity: 0.8;
    max-width: 600px;
    margin: 1rem auto 2.5rem;
}

/* --- Buttons --- */
.links {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
}

.btn-primary { background-color: var(--accent-color); color: #fff; box-shadow: 0 4px 15px var(--glow); }
.btn-secondary { background-color: transparent; color: var(--accent-color); border: 2px solid var(--accent-color); }
.btn-theme { 
    background: var(--card-bg); 
    color: var(--text-color); 
    border: 1px solid var(--border-color);
    padding: 10px;
    font-size: 1.2rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
}

.btn:hover { transform: translateY(-3px); filter: brightness(1.1); }

/* --- Project Grid --- */
h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
}

section h2 {
    text-align: left;
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.footer-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-color);
}


.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.project-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    opacity: 0;
    transform: translateY(30px);
    color: var(--text-color);
}

.project-card.reveal {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--card-shadow), 0 0 20px var(--glow);
}

.project-card h3 {
    margin: 0 0 10px 0;
    font-size: 1.4rem;
    color: var(--accent-color);
}

.project-card .one-liner {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 12px;
    display: block;
}

.project-card p {
    font-size: 0.9rem;
    opacity: 0.7;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.project-screenshot-container {
    width: 100%;
    height: 180px;
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.project-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.5s ease;
}

.project-screenshot:hover {
    transform: scale(1.1);
}

.project-footer {
    margin-top: auto;
}

.btn-card {
    display: inline-block;
    padding: 8px 16px;
    background: var(--glow);
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    margin-bottom: 15px;
}

.btn-card:hover {
    background: var(--accent-color);
    color: #fff;
    transform: scale(1.05);
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.badge {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(128, 128, 128, 0.1);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

/* --- Lightbox --- */
.lightbox {
    display: none;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}

.lightbox img {
    max-width: 90%;
    max-height: 85%;
    border-radius: 12px;
    box-shadow: 0 0 50px rgba(0,0,0,0.5), 0 0 20px var(--accent-color);
    border: 1px solid var(--border-color);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

footer.main-footer {
    text-align: center;
    margin-top: 6rem;
    padding-bottom: 3rem;
    font-size: 0.8rem;
    opacity: 0.5;
    letter-spacing: 2px;
    text-transform: uppercase;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 600px) {
    h1 { font-size: 2.2rem; }
    .project-grid { grid-template-columns: 1fr; }
}