* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #8b5cf6;
    --background-start: #0f0f1a;
    --background-end: #1a1a2e;
    --card-bg: rgba(30, 30, 50, 0.8);
    --card-border: rgba(99, 102, 241, 0.2);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-3: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(180deg, var(--background-start) 0%, var(--background-end) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.header h1 {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* Main Content */
.main-content {
    flex: 1;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
}

/* Model Card */
.model-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
}

.model-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
}

.model-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.model-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.model-icon {
    font-size: 2.5rem;
    min-width: 50px;
}

.model-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.model-author {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.model-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.model-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.tag.params {
    background: rgba(139, 92, 246, 0.15);
    color: var(--secondary-color);
}

.tag.size {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
}

/* Action Buttons */
.model-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.625rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-download {
    background: var(--gradient-1);
    color: white;
    flex: 1;
}

.btn-download:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.btn-install {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    flex: 1;
}

.btn-install:hover {
    background: rgba(99, 102, 241, 0.3);
}

.btn-try {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid var(--success-color);
    flex: 1;
}

.btn-try:hover {
    background: rgba(16, 185, 129, 0.3);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: linear-gradient(180deg, #1e1e32 0%, #151525 100%);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.modal-icon {
    font-size: 2rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-body {
    color: var(--text-secondary);
}

.modal-body.hidden {
    display: none;
}

.modal-message {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 10px;
    border-left: 3px solid var(--primary-color);
}

/* Form */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: rgba(30, 30, 50, 0.5);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.btn-submit {
    background: var(--gradient-1);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    margin-top: 0.5rem;
}

.btn-submit:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* Success State */
#modalSuccess {
    text-align: center;
    padding: 2rem 0;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: successPop 0.5s ease;
}

@keyframes successPop {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

#modalSuccess h3 {
    font-size: 1.5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-message {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.btn-close-success {
    background: var(--gradient-2);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-close-success:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Chart */
.charts-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-legend {
    display: flex;
    gap: 1.5rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.legend-item.cpu .legend-dot {
    background: #6366f1;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.6);
}

.legend-item.gpu .legend-dot {
    background: #10b981;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.legend-item.ram .legend-dot {
    background: #f59e0b;
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
}

.legend-item.ram-total {
    color: var(--text-muted);
}

.chart-wrapper {
    position: relative;
    height: 200px;
    width: 100%;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

    .header h1 {
        font-size: 2rem;
    }

    .logo-icon {
        font-size: 2rem;
    }

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

    .model-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .charts-row {
        grid-template-columns: 1fr;
    }

    .chart-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .chart-legend {
        flex-wrap: wrap;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-start);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}