:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --accent-primary: #38bdf8;
    --accent-secondary: #818cf8;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    background-image:
        radial-gradient(at 0% 0%, hsla(215, 98%, 61%, 0.1) 0, transparent 50%),
        radial-gradient(at 100% 100%, hsla(263, 84%, 55%, 0.1) 0, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0 2rem 2rem;
    /* Top padding handled by sticky header if needed, but adding some space below header */
}

/* Add space for sticky header since home.css might make it sticky */
.lab-intro {
    margin: 4rem auto 2rem;
    text-align: center;
    max-width: 800px;
}

.lab-intro h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.lab-intro p {
    color: var(--text-muted);
}

main {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    flex-grow: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 1024px) {
    main {
        grid-template-columns: 1fr;
    }
}

.preview-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.preview-container {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.target-container {
    perspective: 1000px;
}

#target-element {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-panel {
    background: #020617;
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
    position: relative;
}

.code-panel pre {
    color: #6ee7b7;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    white-space: pre-wrap;
}

.copy-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.controls-panel {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: fit-content;
    box-shadow: var(--shadow-lg);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.control-group h2 {
    font-size: 1.1rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
}

.control-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.label-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.value-display {
    color: var(--accent-primary);
    font-family: monospace;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: #334155;
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

select {
    background: #334155;
    border: 1px solid var(--glass-border);
    color: white;
    padding: 0.5rem;
    border-radius: 8px;
    outline: none;
}

.actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.btn {
    flex: 1;
    padding: 0.8rem;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #7dd3fc;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Animations Hub */
@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}