:root {
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
}

/* ═══ Buttons ═══ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    line-height: 1.4;
    white-space: nowrap;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    border-color: #4f46e5;
    box-shadow: 0 1px 3px rgba(79, 70, 229, 0.3);
}
.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.4);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border-color: #059669;
    box-shadow: 0 1px 3px rgba(16, 185, 129, 0.3);
}
.btn-success:hover:not(:disabled) {
    background: linear-gradient(135deg, #059669, #047857);
    box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
}

.btn-light {
    background: white;
    color: #374151;
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.btn-light:hover:not(:disabled) {
    background: #f9fafb;
    border-color: #d1d5db;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-icon {
    padding: 0.5rem;
    width: 2.25rem;
    height: 2.25rem;
}

/* ═══ Form Inputs ═══ */
.input {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: #1f2937;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    outline: none;
    transition: all 0.15s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    -webkit-appearance: none;
}
.input:hover {
    border-color: #d1d5db;
}
.input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}
.input::placeholder {
    color: #9ca3af;
}
select.input {
    padding-right: 2rem;
    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: 1.25em 1.25em;
}

/* ═══ Cards ═══ */
.kt-card {
    background: white;
    border: 1px solid #f3f4f6;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.kt-card-header {
    border-bottom: 1px solid #f3f4f6;
}
.kt-card-content {
    padding: 1.25rem;
}

/* ═══ Table ═══ */
.table { border-collapse: collapse; }
.table th { font-weight: 600; }
.table td, .table th { vertical-align: middle; }

/* ═══ Alerts ═══ */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    border: 1px solid;
}
.alert-success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }
.alert-danger { background: #fef2f2; border-color: #fca5a5; color: #991b1b; }

/* ═══ Checkbox styled ═══ */
input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    border-radius: 0.25rem;
    border: 1.5px solid #d1d5db;
    cursor: pointer;
    accent-color: #6366f1;
}

/* ═══ Pagination buttons ═══ */
.btn-sm.btn-primary {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
    box-shadow: none;
}

/* ═══ Form label ═══ */
.form-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #374151;
}

/* ═══ Container ═══ */
.container-fixed {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}