:root {
    --primary-color: #0052cc; /* Professional Blue like Moka/Juran */
    --primary-hover: #0747a6;
    --secondary-color: #6b7280; /* Neutral Gray */
    --bg-color: #f4f5f7; /* Light Gray Background */
    --surface-color: #ffffff;
    --text-primary: #172b4d;
    --text-secondary: #5e6c84;
    --border-color: #ebecf0;
    --card-shadow: 0 1px 1px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
    --hover-shadow: 0 4px 8px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
    --sidebar-width: 260px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body.dark-mode {
    --primary-color: #4c9aff;
    --primary-hover: #2684ff;
    --bg-color: #172b4d; /* Deep Blue/Gray */
    --surface-color: #253858;
    --text-primary: #ffffff;
    --text-secondary: #97a0af;
    --border-color: #384966;
    --card-shadow: 0 1px 1px rgba(0, 0, 0, 0.5);
    --hover-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    transition: background-color 0.2s ease, color 0.2s ease;
    min-height: 100vh;
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

/* Utilities remapped from Glass styles */
.glass-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all 0.2s ease;
}

.glass-card:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-2px);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: var(--surface-color);
    border-right: 1px solid var(--border-color);
    z-index: 1001;
    overflow-y: auto;
    transition: transform 0.3s ease-in-out;
    box-shadow: 2px 0 8px rgba(0,0,0,0.05);
}

.sidebar .nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
    transition: all 0.15s ease;
}

.sidebar .nav-link:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

.sidebar .nav-link.active {
    background-color: rgba(9, 30, 66, 0.08); /* Subtle Tint */
    color: var(--primary-color);
    font-weight: 600;
}

body.dark-mode .sidebar .nav-link:hover {
    background-color: rgba(255,255,255,0.05);
}
body.dark-mode .sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    color: var(--primary-color);
}

.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    transition: margin-left 0.3s ease-in-out;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 0 0 20px rgba(0,0,0,0.2);
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
}

/* Redefine Buttons */
.btn-glass {
    /* Now actually a clean outline/ghost button */
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
}

.btn-glass:hover {
    background: var(--bg-color);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0, 82, 204, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    box-shadow: 0 4px 8px rgba(0, 82, 204, 0.4);
}

/* Layout Utilities */
.text-small {
    font-size: 0.875rem;
}

/* Form Controls */
.form-control, .form-select {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.75rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 82, 204, 0.2);
}

/* Table overrides */
.table {
    color: var(--text-primary);
}
.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--border-color);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.animate-fade-in-up {
    animation: fadeInUp 0.3s ease-out forwards;
}

/* ------------------------------------------------------------
   DARK MODE OVERRIDES
------------------------------------------------------------ */
body.dark-mode .text-dark { color: #e2e8f0 !important; }
body.dark-mode .text-muted { color: #94a3b8 !important; }
body.dark-mode .bg-light { background-color: #1e293b !important; } /* Darker slate */
body.dark-mode .bg-white { background-color: var(--surface-color) !important; }

/* Modals */
body.dark-mode .modal-content {
    background-color: var(--surface-color);
    border-color: var(--border-color);
    color: var(--text-primary);
}
body.dark-mode .modal-header { border-bottom-color: var(--border-color); }
body.dark-mode .modal-footer { border-top-color: var(--border-color); }
body.dark-mode .btn-close { filter: invert(1) grayscale(100%) brightness(200%); }

/* Inputs */
body.dark-mode .form-control, 
body.dark-mode .form-select,
body.dark-mode .input-group-text {
    background-color: #0f172a; /* Darker than surface */
    border-color: var(--border-color);
    color: var(--text-primary);
}
body.dark-mode .form-control:focus, 
body.dark-mode .form-select:focus {
    background-color: #0f172a;
    border-color: var(--primary-color);
    color: var(--text-primary);
}
body.dark-mode .form-control::placeholder { color: var(--text-secondary); }

/* Tables */
body.dark-mode .table { color: var(--text-primary); border-color: var(--border-color); }
body.dark-mode .table-hover > tbody > tr:hover > * {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}
body.dark-mode .table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
}

/* Dropdowns */
body.dark-mode .dropdown-menu {
    background-color: var(--surface-color);
    border-color: var(--border-color);
}
body.dark-mode .dropdown-item { color: var(--text-primary); }
body.dark-mode .dropdown-item:hover, 
body.dark-mode .dropdown-item:focus {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Cards */
body.dark-mode .card {
    background-color: var(--surface-color);
    border-color: var(--border-color);
}

/* Swals */
body.dark-mode div:where(.swal2-container) div:where(.swal2-popup) {
    background: var(--surface-color);
    color: var(--text-primary);
}
body.dark-mode div:where(.swal2-content),
body.dark-mode div:where(.swal2-html-container) {
    color: var(--text-secondary) !important;
}

/* Scrollbar */
@media (min-width: 992px) {
    body.dark-mode ::-webkit-scrollbar-track { background: #0f172a; }
    body.dark-mode ::-webkit-scrollbar-thumb { background: #334155; border: 2px solid #0f172a; }
    body.dark-mode ::-webkit-scrollbar-thumb:hover { background: #475569; }
}