body {
    background-color: #f8fafc; /* Slate 50 */
    color: #1e293b; /* Slate 800 */
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
}

/* Modern Card */
.card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    transform: translateY(-2px);
    border-color: #cbd5e1;
}

/* Clean Inputs */
.clean-input {
    background: #f1f5f9; /* Slate 100 */
    border: 1px solid transparent;
    color: #0f172a;
    transition: all 0.2s ease;
}
.clean-input:focus {
    background: #ffffff;
    border-color: #4f46e5;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    outline: none;
}
.clean-input::placeholder { color: #94a3b8; }

select.clean-input {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* Buttons */
.btn-primary {
    background: #4f46e5;
    color: white;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
    transition: all 0.2s ease;
}
.btn-primary:hover {
    background: #4338ca;
    box-shadow: 0 6px 10px -1px rgba(79, 70, 229, 0.3);
    transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: #475569;
    transition: all 0.2s ease;
}
.btn-secondary:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
    color: #1e293b;
}

/* Chart */
.chart-wrapper { position: relative; height: 260px; width: 100%; }

/* Custom Scrollbar */
.custom-scrollbar::-webkit-scrollbar { width: 6px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
.custom-scrollbar::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 10px; }
.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* Gradients */
.bg-gradient-subtle {
    background: radial-gradient(circle at top right, #e0e7ff 0%, transparent 40%),
                radial-gradient(circle at bottom left, #f3e8ff 0%, transparent 40%);
}