:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --danger: #ef4444;
    --success: #10b981;
    --bg-dark: #0f172a;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: #f8fafc;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image:
        radial-gradient(circle at 0% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(239, 68, 68, 0.1) 0%, transparent 50%);
}

.container {
    width: 90%;
    max-width: 1000px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

header {
    text-align: center;
    margin-bottom: 2.5rem;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    background: linear-gradient(to right, #818cf8, #f472b6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

header p {
    color: #94a3b8;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.main-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.samples-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sample-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.sample-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.sample-item .meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: #94a3b8;
}

.sample-item .amount {
    font-weight: 700;
    color: #fff;
    font-size: 1rem;
}

.form-group {
    margin-bottom: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.input-field {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.75rem;
    color: white;
    width: 100%;
    box-sizing: border-box;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s;
    margin-top: 1rem;
}

.btn:hover {
    background: var(--primary-hover);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

#result-area {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 16px;
    text-align: center;
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.result-fraud {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: #fca5a5;
}

.result-safe {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: #6ee7b7;
}

.result-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.result-conf {
    font-size: 0.9rem;
    opacity: 0.8;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tab {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.05);
    font-size: 0.875rem;
    transition: all 0.2s;
}

.tab.active {
    background: var(--primary);
}

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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}