:root {
    --primary-color: #6366f1;
    --background-dark: #0f172a;
    --text-light: #e2e8f0;
    --text-gray: #94a3b8;
    --card-bg: #1e293b;
    --gradient-start: #818cf8;
    --gradient-end: #6366f1;
    --gradient-hover-start: #6366f1;
    --gradient-hover-end: #4f46e5;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-dark);
    color: var(--text-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(to right, #818cf8, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.button-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.btn {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--gradient-hover-start), var(--gradient-hover-end));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn:hover::before {
    opacity: 1;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.5);
}

.card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    margin: 1rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    z-index: -1;
    opacity: 0.1;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 0.2;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-gray);
}

input[type="number"],
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid;
    border-image: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) 1;
    border-radius: 0.5rem;
    background-color: #374151;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

input[type="number"]:focus,
select:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

#drawing-canvas {
    background-color: white;
    border-radius: 1rem;
    margin: 2rem auto;
    display: block;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.training-form {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    margin-top: 2rem;
}

.results {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    margin-top: 2rem;
}

#training-logs {
    font-family: 'Roboto Mono', monospace;
    color: var(--text-gray);
    padding: 1rem;
    border-radius: 0.5rem;
    background-color: #374151;
    margin-top: 1rem;
    border: 1px solid;
    border-image: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) 1;
}

.plot-container {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 1rem;
    margin: 1rem 0;
    border: 1px solid;
    border-image: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) 1;
}

h2, h3 {
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.hero-text {
    font-size: 1.25rem;
    text-align: center;
    color: var(--text-light);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.model-config {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    position: relative;
}

.model-config::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 1rem;
    z-index: -1;
    opacity: 0.1;
    transition: opacity 0.3s ease;
}

.model-config:hover::before {
    opacity: 0.2;
}

.kernel-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

#comparison-logs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.comparison-model {
    padding: 1rem;
    background: #374151;
    border-radius: 0.5rem;
}

.comparison-model h4 {
    margin-top: 0;
    color: var(--text-light);
}

@media (max-width: 768px) {
    .models-grid {
        grid-template-columns: 1fr;
    }

    #comparison-logs {
        grid-template-columns: 1fr;
    }
}