/* Gorgeous Mesh Background */
body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: #0f172a;
    background-image: 
        radial-gradient(at 0% 0%, rgb(13, 55, 27) 0, transparent 50%), 
        radial-gradient(at 50% 0%, rgb(215, 218, 14) 0, transparent 50%), 
        radial-gradient(at 100% 0%, rgb(200, 35, 93) 0, transparent 50%),
        radial-gradient(at 0% 100%, rgb(21, 49, 43) 0, transparent 50%),
        radial-gradient(at 20% 50%, rgb(28, 131, 108) 0, transparent 50%),
        radial-gradient(at 60% 55%, rgb(9, 225, 207) 0, transparent 50%),
        radial-gradient(at 50% 100%, rgb(50, 8, 112) 0, transparent 50%),
        radial-gradient(at 100% 100%, rgb(106, 3, 3) 0, transparent 50%);
    min-height: 100vh;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main-header {
    text-align: center;
    padding: 50px 20px;
}

.main-header h1 {
    font-size: 4rem;
    font-weight: 900;
    margin: 0;
    background: linear-gradient(to right, #fff, #94a3b8);
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

/* Layout Structure */
.portal-container {
    width: 95%;
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding-bottom: 50px;
}

.main-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

/* Glassmorphism Card Style */
.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 30px;
    transition: all 0.3s ease;
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.card-header i { font-size: 2rem; }
.card-header h2 { margin: 0; font-size: 1.8rem; letter-spacing: 1px; }

/* Colors for specific categories */
.spot-card i { color: #38bdf8; }
.mcq-card i { color: #fbbf24; }
.mock-card i { color: #4ade80; }

/* Dynamic Button Grid (At least 2 buttons per line) */
.dynamic-button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

/* Stylish Buttons */
.dynamic-button-grid button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 18px 10px;
    border-radius: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.dynamic-button-grid button:hover {
    background: white;
    color: #0f172a;
    transform: scale(1.05);
    box-shadow: 0 0 10px #000000;
}

/* Smaller Mock Block */
.mock-card {
    padding: 20px 30px;
}

/* Responsive adjustment for Mobile */
@media (max-width: 600px) {
    .main-header h1 { font-size: 2.5rem; }
    .main-grid { grid-template-columns: 1fr; }
}


.btn-back {
    background: #f2f2f7;
    border: none;
    padding: 8px 15px;
    
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    color: #555;
    display: flex;
    align-items: center;
    gap: 5px;
}