/* --- 1. THEME VARIABLES (Dual Mode) --- */
:root {
    /* Dark Mode (Default) */
    --bg-color: #050505; 
    --text-color: #ffffff;
    --blob-gradient: linear-gradient(45deg, #333, #888, #333);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.15);
    --accent: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.8);
    --primary-gradient: linear-gradient(45deg, #ffffff, #555555);
}

[data-theme="light"] {
    --bg-color: #f0f0f0;
    --text-color: #1a1a1a;
    --blob-gradient: linear-gradient(45deg, #bbb, #fff, #bbb);
    --glass-bg: rgba(0, 0, 0, 0.03);
    --glass-border: rgba(0, 0, 0, 0.1);
    --accent: #000000;
    --card-shadow: rgba(0, 0, 0, 0.1);
}

/* --- 2. RESET & BASE --- */
* {
    margin: 0; padding: 0; box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    transition: background 0.5s ease, color 0.5s ease;
}

/* --- 3. LIQUID BACKGROUND ENGINE --- */
.gradient-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -2;
    overflow: hidden;
    filter: blur(80px) contrast(150%);
}

.blob {
    position: absolute;
    width: 500px; height: 500px;
    background: var(--blob-gradient);
    border-radius: 50%;
    opacity: 0.5;
    animation: liquidMove 20s infinite alternate ease-in-out;
}

.blob-1 { top: -10%; left: -10%; animation-duration: 15s; }
.blob-2 { bottom: -10%; right: -10%; width: 600px; }
.blob-3 { top: 40%; left: 30%; width: 300px; height: 300px; }

@keyframes liquidMove {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(100px, 50px) rotate(360deg); }
}

/* --- 4. NAVIGATION (Centered Toggle) --- */
.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 8%;
    position: fixed;
    width: 100%; top: 0; z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-center {
    display: flex; justify-content: center; align-items: center; flex: 1;
}

.theme-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    width: 45px; height: 45px;
    border-radius: 50%; cursor: pointer;
    font-size: 1.2rem; transition: 0.3s;
}

.theme-btn:hover { transform: scale(1.1); background: var(--text-color); color: var(--bg-color); }

.nav-links { list-style: none; display: flex; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--text-color); font-weight: 500; transition: 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); opacity: 0.7; }
/* 1. Laptop par icon ko hamesha ke liye hide rakho */
.hamburger {
    display: none !important; 
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
}

/* 2. Sirf mobile par icon dikhane ke liye niche wala hissa (Media Query) */
@media (max-width: 768px) {
    .hamburger {
        display: block !important; /* Mobile par icon wapas aa jayega */
    }
    .nav-links {
        display: none; /* Mobile par menu gayab ho jayega */
    }
}

/* --- 5. CARDS & GRID --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.glass-card {
    background: var(--glass-bg);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(30px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 30px var(--card-shadow);
}

.glass-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255,255,255,0.5);
}

/* --- 6. PROJECT FILTERING STYLE --- */
.filter-buttons { margin: 30px 0; display: flex; justify-content: center; gap: 15px; }

.filter-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    border-radius: 30px;
    cursor: pointer;
    transition: 0.3s;
}

.filter-btn.active {
    background: var(--text-color) !important;
    color: var(--bg-color) !important;
}

.project-item { transition: opacity 0.4s ease, transform 0.4s ease; }

.project-img {
    height: 200px; width: 100%;
    border-radius: 12px; margin-bottom: 15px;
}

.badge {
    display: inline-block; padding: 5px 12px;
    background: rgba(255,255,255,0.1);
    font-size: 0.8rem; border-radius: 5px; color: var(--text-color);
}

/* --- 7. MISC --- */
.page-header { padding-top: 150px; text-align: center; }
.page-header h1 { font-size: 3.5rem; }
.container { padding: 50px 10%; }

.model-container { width: 100%; height: 400px; margin-top: 50px; }
model-viewer { width: 100%; height: 100%; }

footer { padding: 40px; text-align: center; opacity: 0.6; }

/* --- 8. MOBILE --- */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: block; cursor: pointer; font-size: 1.5rem; }
    .glass-nav { padding: 15px 5%; }
}
.swipe-slider {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory; /* Smooth snap effect */
    scroll-behavior: smooth;
}

/* Scrollbar chupane ke liye */
.swipe-slider::-webkit-scrollbar {
    display: none; 
}

.swipe-slider img {
    width: 100%; /* Ek waqt mein ek image dikhegi */
    height: 100%;
    object-fit: cover;
    flex-shrink: 0; /* Image pichke nahi */
    scroll-snap-align: start;
}