/* PEC (Profit-Easy Calculator) - Bootstrap Theme Customization */
/* Blue, White & Grey Color Scheme */

:root {
    /* Custom Color Variables */
    --primary-blue: #2563eb;
    --primary-blue-dark: #1d4ed8;
    --primary-blue-light: #dbeafe;
    --primary-blue-lighter: #eff6ff;
    
    /* Grey Scale */
    --grey-50: #f9fafb;
    --grey-100: #f3f4f6;
    --grey-200: #e5e7eb;
    --grey-300: #d1d5db;
    --grey-400: #9ca3af;
    --grey-500: #6b7280;
    --grey-600: #4b5563;
    --grey-700: #374151;
    --grey-800: #1f2937;
    --grey-900: #111827;
    
    /* Status Colors */
    --success: #10b981;
    --success-dark: #059669;
    --error: #ef4444;
    --error-dark: #dc2626;
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --info: #3b82f6;
    --info-dark: #2563eb;
    
    /* Bootstrap Color System Override */
    --bs-primary: #2563eb;
    --bs-primary-rgb: 37, 99, 235;
    --bs-secondary: #6b7280;
    --bs-secondary-rgb: 107, 114, 128;
    --bs-success: #10b981;
    --bs-success-rgb: 16, 185, 129;
    --bs-danger: #ef4444;
    --bs-danger-rgb: 239, 68, 68;
    --bs-warning: #f59e0b;
    --bs-warning-rgb: 245, 158, 11;
    --bs-info: #3b82f6;
    --bs-info-rgb: 59, 130, 246;
    --bs-light: #f3f4f6;
    --bs-light-rgb: 243, 244, 246;
    --bs-dark: #1f2937;
    --bs-dark-rgb: 31, 41, 55;
    
    /* Bootstrap Body */
    --bs-body-color: #374151;
    --bs-body-bg: #f9fafb;
    --bs-body-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --bs-body-font-size: 0.9375rem;
    --bs-body-line-height: 1.6;
    
    /* Bootstrap Border */
    --bs-border-color: #e5e7eb;
    --bs-border-radius: 0.5rem;
    --bs-border-radius-sm: 0.375rem;
    --bs-border-radius-lg: 0.75rem;
    --bs-border-radius-xl: 1rem;
    
    /* Bootstrap Link */
    --bs-link-color: #2563eb;
    --bs-link-hover-color: #1d4ed8;
    
    /* Custom Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Custom Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Base Typography Enhancement */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--grey-800);
    letter-spacing: -0.01em;
}

/* Bootstrap Button Customization */
.btn {
    font-weight: 600;
    border-radius: var(--bs-border-radius);
    transition: all 0.2s ease;
}

.btn-primary {
    --bs-btn-bg: var(--primary-blue);
    --bs-btn-border-color: var(--primary-blue);
    --bs-btn-hover-bg: var(--primary-blue-dark);
    --bs-btn-hover-border-color: var(--primary-blue-dark);
    --bs-btn-active-bg: var(--primary-blue-dark);
    --bs-btn-active-border-color: var(--primary-blue-dark);
    --bs-btn-disabled-bg: var(--primary-blue);
    --bs-btn-disabled-border-color: var(--primary-blue);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    --bs-btn-bg: var(--grey-600);
    --bs-btn-border-color: var(--grey-600);
    --bs-btn-hover-bg: var(--grey-700);
    --bs-btn-hover-border-color: var(--grey-700);
}

.btn-success {
    --bs-btn-bg: var(--success);
    --bs-btn-border-color: var(--success);
    --bs-btn-hover-bg: var(--success-dark);
    --bs-btn-hover-border-color: var(--success-dark);
}

.btn-danger {
    --bs-btn-bg: var(--error);
    --bs-btn-border-color: var(--error);
    --bs-btn-hover-bg: var(--error-dark);
    --bs-btn-hover-border-color: var(--error-dark);
}

.btn-warning {
    --bs-btn-bg: var(--warning);
    --bs-btn-border-color: var(--warning);
    --bs-btn-hover-bg: var(--warning-dark);
    --bs-btn-hover-border-color: var(--warning-dark);
}

.btn-info {
    --bs-btn-bg: var(--info);
    --bs-btn-border-color: var(--info);
    --bs-btn-hover-bg: var(--info-dark);
    --bs-btn-hover-border-color: var(--info-dark);
}

.btn-outline-primary {
    --bs-btn-color: var(--primary-blue);
    --bs-btn-border-color: var(--primary-blue);
    --bs-btn-hover-bg: var(--primary-blue);
    --bs-btn-hover-border-color: var(--primary-blue);
}

/* Custom Button Variant */
.btn-ghost {
    background-color: transparent;
    color: var(--primary-blue);
    border: 1px solid transparent;
}

.btn-ghost:hover {
    background-color: var(--primary-blue-lighter);
    color: var(--primary-blue-dark);
}

/* ==========================================
   BOOTSTRAP 5 FORM CUSTOMIZATION
   ========================================== */

/* Form Labels */
.form-label {
    font-weight: 600;
    color: var(--grey-700);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.01em;
}

.form-label.required::after {
    content: ' *';
    color: var(--error);
}

/* Text Inputs (input, textarea) */
.form-control {
    background-color: white;
    border: 1px solid var(--grey-300);
    border-radius: var(--bs-border-radius);
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--grey-800);
    transition: all 0.2s ease;
}

.form-control::placeholder {
    color: var(--grey-400);
    font-weight: 400;
}

.form-control:hover {
    border-color: var(--grey-400);
}

.form-control:focus {
    background-color: white;
    border-color: var(--primary-blue);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1), 
                0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--grey-50);
    color: var(--grey-500);
    border-color: var(--grey-200);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Textarea Specific */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Input Sizes */
.form-control-sm {
    padding: 0.45rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
}

.form-control-lg {
    padding: 0.75rem 1rem;
    font-size: 1.05rem;
    border-radius: 0.5rem;
}

/* Select Dropdown */
.form-select {
    background-color: white;
    border: 1px solid var(--grey-300);
    border-radius: var(--bs-border-radius);
    padding: 0.625rem 2.5rem 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--grey-800);
    cursor: pointer;
    transition: all 0.2s ease;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%234b5563' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 14px;
    appearance: none;
}

.form-select:hover {
    border-color: var(--grey-400);
}

.form-select:focus {
    background-color: white;
    border-color: var(--primary-blue);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1), 
                0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-select:disabled {
    background-color: var(--grey-50);
    color: var(--grey-500);
    border-color: var(--grey-200);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-select option {
    padding: 0.5rem;
    font-weight: 500;
}

.form-select option:disabled {
    color: var(--grey-400);
}

/* Select Sizes */
.form-select-sm {
    padding: 0.45rem 2.25rem 0.45rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
    background-size: 12px;
}

.form-select-lg {
    padding: 0.75rem 2.75rem 0.75rem 1rem;
    font-size: 1.05rem;
    border-radius: 0.5rem;
    background-size: 16px;
}

/* Checkboxes & Radio Buttons */
.form-check {
    padding-left: 1.75rem;
    min-height: 1.5rem;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    margin-left: -1.75rem;
    border: 2px solid var(--grey-400);
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-check-input:hover {
    border-color: var(--primary-blue);
}

.form-check-input:focus {
    border-color: var(--primary-blue);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-check-input:checked {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.form-check-input[type="checkbox"]:indeterminate {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.form-check-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-check-label {
    color: var(--grey-700);
    font-size: 0.9375rem;
    cursor: pointer;
    user-select: none;
}

/* Switch Toggle */
.form-switch .form-check-input {
    width: 2.5rem;
    height: 1.25rem;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='white'/%3e%3c/svg%3e");
    border-radius: 2rem;
    cursor: pointer;
}

.form-switch .form-check-input:checked {
    background-color: var(--primary-blue);
}

/* Input Groups */
.input-group {
    border-radius: var(--bs-border-radius);
}

.input-group-text {
    background-color: var(--grey-100);
    border: 1px solid var(--grey-300);
    color: var(--grey-600);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.625rem 0.875rem;
    transition: all 0.2s ease;
}

.input-group:focus-within .input-group-text {
    border-color: var(--primary-blue);
    background-color: var(--primary-blue-lighter);
    color: var(--primary-blue);
}

.input-group > .form-control:focus,
.input-group > .form-select:focus {
    z-index: 3;
}

/* File Input */
.form-control[type="file"] {
    cursor: pointer;
}

.form-control[type="file"]::-webkit-file-upload-button {
    padding: 0.45rem 0.875rem;
    margin: -0.625rem -0.875rem;
    margin-inline-end: 0.875rem;
    color: var(--grey-700);
    background-color: var(--grey-100);
    border: 0;
    border-inline-end: 1px solid var(--grey-300);
    border-radius: 0;
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-control[type="file"]:hover::-webkit-file-upload-button {
    background-color: var(--grey-200);
}

.form-control[type="file"]::-webkit-file-upload-button:hover {
    background-color: var(--grey-200);
}

/* Range Input */
.form-range {
    width: 100%;
    height: 1.5rem;
    padding: 0;
    background-color: transparent;
    appearance: none;
}

.form-range:focus {
    outline: 0;
}

.form-range::-webkit-slider-track {
    width: 100%;
    height: 0.5rem;
    background-color: var(--grey-200);
    border-radius: 0.5rem;
    cursor: pointer;
}

.form-range::-webkit-slider-thumb {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: -0.375rem;
    background-color: var(--primary-blue);
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    appearance: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-range::-webkit-slider-thumb:hover {
    background-color: var(--primary-blue-dark);
    transform: scale(1.1);
}

.form-range::-moz-range-track {
    width: 100%;
    height: 0.5rem;
    background-color: var(--grey-200);
    border-radius: 0.5rem;
    cursor: pointer;
}

.form-range::-moz-range-thumb {
    width: 1.25rem;
    height: 1.25rem;
    background-color: var(--primary-blue);
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-range::-moz-range-thumb:hover {
    background-color: var(--primary-blue-dark);
    transform: scale(1.1);
}

/* Color Input */
.form-control[type="color"] {
    height: 2.5rem;
    padding: 0.25rem;
    cursor: pointer;
}

.form-control[type="color"]::-webkit-color-swatch {
    border-radius: 0.25rem;
    border: 1px solid var(--grey-300);
}

.form-control[type="color"]::-moz-color-swatch {
    border-radius: 0.25rem;
    border: 1px solid var(--grey-300);
}

/* Date/Time Inputs */
.form-control[type="date"],
.form-control[type="datetime-local"],
.form-control[type="time"],
.form-control[type="month"],
.form-control[type="week"] {
    cursor: pointer;
}

.form-control[type="date"]::-webkit-calendar-picker-indicator,
.form-control[type="datetime-local"]::-webkit-calendar-picker-indicator,
.form-control[type="time"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.form-control[type="date"]:hover::-webkit-calendar-picker-indicator,
.form-control[type="datetime-local"]:hover::-webkit-calendar-picker-indicator,
.form-control[type="time"]:hover::-webkit-calendar-picker-indicator {
    opacity: 1;
}

/* Number Input Spinners */
.form-control[type="number"] {
    padding-right: 0.5rem;
}

.form-control[type="number"]::-webkit-inner-spin-button,
.form-control[type="number"]::-webkit-outer-spin-button {
    opacity: 0.5;
    cursor: pointer;
}

.form-control[type="number"]:hover::-webkit-inner-spin-button,
.form-control[type="number"]:hover::-webkit-outer-spin-button {
    opacity: 1;
}

/* Search Input */
.form-control[type="search"] {
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001c.03.04.062.078.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1.007 1.007 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
}

.form-control[type="search"]::-webkit-search-cancel-button {
    appearance: none;
}

/* Validation States */
.was-validated .form-control:valid,
.form-control.is-valid {
    border-color: var(--success);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2310b981' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:valid:focus,
.form-control.is-valid:focus {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--success);
}

.was-validated .form-control:valid ~ .valid-feedback,
.form-control.is-valid ~ .valid-feedback {
    display: block;
}

.was-validated .form-control:invalid,
.form-control.is-invalid {
    border-color: var(--error);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23ef4444'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23ef4444' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:invalid:focus,
.form-control.is-invalid:focus {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--error);
    font-weight: 500;
}

.was-validated .form-control:invalid ~ .invalid-feedback,
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* Select Validation */
.was-validated .form-select:valid,
.form-select.is-valid {
    border-color: var(--success);
}

.was-validated .form-select:invalid,
.form-select.is-invalid {
    border-color: var(--error);
}

/* Floating Labels */
.form-floating > .form-control,
.form-floating > .form-select {
    height: calc(3.5rem + 2px);
    line-height: 1.25;
}

.form-floating > label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.875rem;
    pointer-events: none;
    border: 1px solid transparent;
    transform-origin: 0 0;
    transition: opacity 0.1s ease-in-out, transform 0.1s ease-in-out;
    color: var(--grey-500);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
    color: var(--primary-blue);
}

.form-floating > .form-control:focus ~ label {
    color: var(--primary-blue);
    font-weight: 600;
}

/* Form Text (Help Text) */
.form-text {
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--grey-500);
}

/* Input Group with Icons */
.input-group > .input-group-text > i,
.input-group > .input-group-text > svg {
    color: var(--grey-500);
    font-size: 1rem;
}

.input-group:focus-within > .input-group-text > i,
.input-group:focus-within > .input-group-text > svg {
    color: var(--primary-blue);
}

/* Bootstrap Card Customization */
.card {
    border-color: var(--grey-200);
    border-radius: var(--bs-border-radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.card-header {
    background-color: var(--grey-50);
    border-bottom-color: var(--grey-200);
    font-weight: 600;
    color: var(--grey-800);
}

.card-footer {
    background-color: var(--grey-50);
    border-top-color: var(--grey-200);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* Bootstrap Alert Customization */
.alert {
    border-radius: var(--bs-border-radius);
    border-width: 1px;
    font-size: 0.9375rem;
}

.alert-primary {
    background-color: var(--primary-blue-lighter);
    border-color: var(--primary-blue-light);
    color: var(--primary-blue-dark);
}

.alert-success {
    background-color: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* Bootstrap Badge Customization */
.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
    border-radius: 0.375rem;
}

.bg-primary { background-color: var(--primary-blue) !important; }
.bg-success { background-color: var(--success) !important; }
.bg-danger { background-color: var(--error) !important; }
.bg-warning { background-color: var(--warning) !important; }
.bg-info { background-color: var(--info) !important; }
.bg-secondary { background-color: var(--grey-600) !important; }

.text-primary { color: var(--primary-blue) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--error) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }

/* Bootstrap Table Customization */
.table {
    color: var(--grey-700);
}

.table thead th {
    background-color: var(--grey-50);
    color: var(--grey-800);
    font-weight: 600;
    border-bottom: 2px solid var(--grey-300);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-striped > tbody > tr:nth-of-type(odd) {
    background-color: var(--grey-50);
}

.table-hover > tbody > tr:hover {
    background-color: var(--primary-blue-lighter);
}

/* Bootstrap Modal Customization */
.modal-content {
    border-radius: var(--bs-border-radius-lg);
    border: 1px solid var(--grey-200);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background-color: var(--grey-50);
    border-bottom-color: var(--grey-200);
}

.modal-footer {
    background-color: var(--grey-50);
    border-top-color: var(--grey-200);
}

.modal-title {
    font-weight: 700;
    color: var(--grey-800);
}

/* Bootstrap Dropdown Customization */
.dropdown-menu {
    border-color: var(--grey-200);
    border-radius: var(--bs-border-radius);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: 0.375rem;
    color: var(--grey-700);
    font-size: 0.9375rem;
    transition: all 0.2s;
}

.dropdown-item:hover {
    background-color: var(--grey-100);
    color: var(--grey-900);
}

.dropdown-item:active,
.dropdown-item.active {
    background-color: var(--primary-blue);
    color: white;
}

.dropdown-divider {
    border-top-color: var(--grey-200);
}

/* Bootstrap Pagination Customization */
.pagination {
    gap: 0.25rem;
}

.page-link {
    color: var(--grey-700);
    border-color: var(--grey-300);
    border-radius: var(--bs-border-radius-sm);
    font-weight: 500;
}

.page-link:hover {
    background-color: var(--grey-100);
    border-color: var(--grey-300);
    color: var(--grey-900);
}

.page-item.active .page-link {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.page-item.disabled .page-link {
    background-color: var(--grey-100);
    color: var(--grey-400);
}

/* Bootstrap Nav/Tabs Customization */
.nav-tabs {
    border-bottom-color: var(--grey-200);
}

.nav-tabs .nav-link {
    color: var(--grey-600);
    border-color: transparent;
}

.nav-tabs .nav-link:hover {
    border-color: var(--grey-200);
    color: var(--grey-800);
}

.nav-tabs .nav-link.active {
    color: var(--primary-blue);
    background-color: white;
    border-color: var(--grey-200) var(--grey-200) white;
}

.nav-pills .nav-link {
    color: var(--grey-600);
    border-radius: var(--bs-border-radius);
}

.nav-pills .nav-link.active {
    background-color: var(--primary-blue);
}

/* Bootstrap Progress Customization */
.progress {
    background-color: var(--grey-200);
    border-radius: var(--bs-border-radius);
}

.progress-bar {
    background-color: var(--primary-blue);
}

/* Bootstrap Breadcrumb Customization */
.breadcrumb {
    background-color: var(--grey-100);
    border-radius: var(--bs-border-radius);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--grey-400);
}

.breadcrumb-item.active {
    color: var(--grey-600);
}

/* Bootstrap List Group Customization */
.list-group-item {
    border-color: var(--grey-200);
    color: var(--grey-700);
}

.list-group-item:hover {
    background-color: var(--grey-50);
}

.list-group-item.active {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

/* Custom Loading Spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--grey-300);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom Utilities */
.bg-grey-50 { background-color: var(--grey-50) !important; }
.bg-grey-100 { background-color: var(--grey-100) !important; }
.bg-grey-200 { background-color: var(--grey-200) !important; }
.bg-blue-light { background-color: var(--primary-blue-lighter) !important; }

.border-primary { border-color: var(--primary-blue) !important; }
.border-grey { border-color: var(--grey-200) !important; }

.text-grey-600 { color: var(--grey-600) !important; }
.text-grey-700 { color: var(--grey-700) !important; }
.text-grey-800 { color: var(--grey-800) !important; }

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

/* Responsive Utilities */
@media (max-width: 768px) {
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn {
        font-size: 0.875rem;
    }
}

/* Print Styles */
@media print {
    .btn,
    .navbar,
    .sidebar,
    .modal,
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--grey-300);
    }
}