/* =========================================================
   FORM RESPONSIVE UTILITIES

   Mobile-first responsive form styling for:
   - Form grids and layouts
   - Form fields and labels
   - Button groups
   - Input fields
   - Validation messages
   - Card-based forms

   ========================================================= */

:root {
    /* Form Spacing */
    --form-gap-mobile: 0.75rem;
    --form-gap-tablet: 1rem;
    --form-gap-desktop: 1.5rem;

    /* Form Control Sizes */
    --form-control-height-mobile: 2.5rem;
    --form-control-height-desktop: 3rem;

    /* Label Sizing */
    --form-label-min-width: 150px;
    --form-label-font-size-mobile: 0.875rem;
    --form-label-font-size-desktop: 0.9375rem;

    /* Card Padding */
    --form-card-padding-mobile: 0.75rem;
    --form-card-padding-tablet: 1rem;
    --form-card-padding-desktop: 1.5rem;
}

/* =========================================================
   FORM GRID LAYOUTS - Main responsive container
   ========================================================= */

/* Single column on mobile, multiple on desktop */
.form-responsive-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--form-gap-mobile);
}

@media (min-width: 576px) {
    .form-responsive-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 768px) {
    .form-responsive-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .form-responsive-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--form-gap-desktop);
    }
}

@media (min-width: 1440px) {
    .form-responsive-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--form-gap-desktop);
    }
}

/* Two-column grid variant */
.form-responsive-grid-2col {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--form-gap-mobile);
}

@media (min-width: 768px) {
    .form-responsive-grid-2col {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .form-responsive-grid-2col {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--form-gap-desktop);
    }
}

/* Full width variant */
.form-responsive-grid-full {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--form-gap-mobile);
}

@media (min-width: 768px) {
    .form-responsive-grid-full {
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .form-responsive-grid-full {
        gap: var(--form-gap-desktop);
    }
}

/* =========================================================
   FORM FIELD CONTAINERS
   ========================================================= */

/* Individual form field wrapper */
.form-group-responsive {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
}

/* Field with floating label */
.form-group-floating-responsive {
    position: relative;
    display: flex;
    flex-direction: column;
}

/* =========================================================
   FORM LABELS - Responsive sizing and positioning
   ========================================================= */

/* Standard form label */
.form-label-responsive {
    font-size: var(--form-label-font-size-mobile);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #0f172a;
    line-height: 1.4;
}

@media (min-width: 768px) {
    .form-label-responsive {
        font-size: var(--form-label-font-size-desktop);
        margin-bottom: 0.375rem;
    }
}

/* Label with inline field (side-by-side on desktop) */
.form-label-inline {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
}

@media (min-width: 768px) {
    .form-label-inline {
        flex-direction: row;
        align-items: center;
        gap: 1rem;
    }
}

.form-label-inline label {
    font-size: var(--form-label-font-size-mobile);
    font-weight: 600;
    margin: 0;
}

@media (min-width: 768px) {
    .form-label-inline label {
        font-size: var(--form-label-font-size-desktop);
        min-width: var(--form-label-min-width);
        flex-shrink: 0;
    }
}

.form-label-inline input,
.form-label-inline select,
.form-label-inline textarea {
    flex: 1;
}

/* Required field indicator */
.form-label-responsive .required,
.form-label-inline label .required {
    color: #dc3545;
    margin-left: 0.25rem;
}

/* =========================================================
   FORM INPUTS - Responsive sizing
   ========================================================= */

/* Ensure all form inputs are responsive */
input.form-control,
input.form-control-responsive,
select.form-select,
select.form-select-responsive,
textarea.form-control,
textarea.form-control-responsive {
    width: 100%;
    font-size: 16px; /* Prevent iOS auto-zoom */
    min-height: var(--form-control-height-mobile);
    padding: 0.5rem 0.75rem;
}

@media (min-width: 768px) {
    input.form-control,
    input.form-control-responsive,
    select.form-select,
    select.form-select-responsive,
    textarea.form-control,
    textarea.form-control-responsive {
        min-height: var(--form-control-height-desktop);
    }
}

/* Floating label adjustments for mobile */
.form-floating > .form-control-responsive,
.form-floating > .form-select-responsive {
    padding-top: 1.25rem;
    padding-bottom: 0.25rem;
}

.form-floating > label {
    font-size: 0.875rem;
}

/* =========================================================
   VALIDATION & ERROR MESSAGES
   ========================================================= */

/* Validation message styling */
.form-text-responsive,
.validation-message,
.invalid-feedback,
.valid-feedback {
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.invalid-feedback {
    color: #dc3545;
}

.valid-feedback {
    color: #198754;
}

/* Help text below field */
.form-text {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 0.25rem;
}

/* =========================================================
   BUTTON GROUPS - Responsive stacking
   ========================================================= */

/* Buttons stack vertically on mobile, horizontal on desktop */
.btn-group-responsive {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

@media (min-width: 768px) {
    .btn-group-responsive {
        flex-direction: row;
        gap: 0.5rem;
        width: auto;
    }

    .btn-group-responsive .btn {
        flex: 1 1 auto;
        min-width: fit-content;
    }
}

/* Buttons stay full-width on mobile */
.btn-group-responsive .btn {
    width: 100%;
    padding: 0.5rem 1rem;
    min-height: 48px; /* Touch target */
    font-size: 0.95rem;
}

@media (min-width: 768px) {
    .btn-group-responsive .btn {
        width: auto;
        flex-grow: 1;
    }
}

/* Action buttons group (Save, Cancel, etc.) */
.form-actions-responsive {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .form-actions-responsive {
        flex-direction: row;
        gap: 0.75rem;
        justify-content: flex-end;
    }
}

.form-actions-responsive .btn {
    width: 100%;
    min-height: 44px;
}

@media (min-width: 768px) {
    .form-actions-responsive .btn {
        width: auto;
        flex: 0 1 auto;
    }
}

/* Primary button (usually "Save") - full width on mobile */
.form-actions-responsive .btn-primary {
    order: -1; /* Show first on mobile */
}

@media (min-width: 768px) {
    .form-actions-responsive .btn-primary {
        order: 0;
    }
}

/* =========================================================
   FORM CARD CONTAINERS
   ========================================================= */

/* Card wrapper for form sections */
.form-card {
    background: white;
    border-radius: 0.375rem;
    border: 1px solid #e2e8f0;
    padding: var(--form-card-padding-mobile);
    margin-bottom: var(--form-gap-mobile);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

@media (min-width: 576px) {
    .form-card {
        padding: var(--form-card-padding-tablet);
        margin-bottom: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .form-card {
        padding: var(--form-card-padding-desktop);
        margin-bottom: var(--form-gap-desktop);
        border-left: 4px solid #0d6efd;
    }
}

/* Form card header */
.form-card-header {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #f1f5f9;
    color: #0f172a;
}

/* Form card body */
.form-card-body {
    display: flex;
    flex-direction: column;
    gap: var(--form-gap-mobile);
}

@media (min-width: 768px) {
    .form-card-body {
        gap: var(--form-gap-tablet);
    }
}

/* Form card footer */
.form-card-footer {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e2e8f0;
}

@media (min-width: 768px) {
    .form-card-footer {
        flex-direction: row;
        justify-content: flex-end;
    }
}

/* =========================================================
   FIELDSETS - Grouped form sections
   ========================================================= */

/* Responsive fieldset */
fieldset.responsive-fieldset {
    border: 1px solid #e2e8f0;
    border-radius: 0.25rem;
    padding: var(--form-card-padding-mobile);
    margin: 0 0 var(--form-gap-mobile) 0;
}

@media (min-width: 768px) {
    fieldset.responsive-fieldset {
        padding: var(--form-card-padding-tablet);
        margin: 0 0 var(--form-gap-tablet) 0;
    }
}

fieldset.responsive-fieldset > legend {
    font-size: 0.95rem;
    font-weight: 600;
    margin-left: -0.5rem;
    padding: 0 0.5rem;
    color: #0f172a;
}

/* =========================================================
   FORM SECTIONS - Multiple column layouts
   ========================================================= */

/* Row with multiple columns - stacks on mobile */
.form-row-responsive {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--form-gap-mobile);
}

@media (min-width: 576px) {
    .form-row-responsive {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 768px) {
    .form-row-responsive {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .form-row-responsive {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--form-gap-desktop);
    }
}

/* =========================================================
   TOUCH TARGET SIZING
   ========================================================= */

/* Ensure minimum touch target on mobile */
.form-control,
.form-select,
.btn,
[role="button"] {
    min-height: 48px;
    min-width: 44px;
}

@media (min-width: 1024px) {
    .form-control,
    .form-select,
    .btn,
    [role="button"] {
        min-height: 48px;
        min-width: 40px;
    }
}

/* =========================================================
   ACCESSIBILITY & RESPONSIVE STATES
   ========================================================= */

/* Focus states for accessibility */
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.btn:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}

/* Disabled form elements */
input:disabled,
select:disabled,
textarea:disabled {
    background-color: #f1f5f9;
    cursor: not-allowed;
    opacity: 0.6;
}

/* =========================================================
   CHECKBOX & RADIO RESPONSIVE
   ========================================================= */

/* Checkbox and radio containers */
.form-check-responsive {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
}

.form-check-responsive .form-check-input {
    cursor: pointer;
    width: 1.25rem;
    height: 1.25rem;
    min-width: 1.25rem;
}

.form-check-responsive .form-check-label {
    cursor: pointer;
    margin: 0;
    font-size: 0.95rem;
}

/* Checkbox/radio group stacking */
.form-check-group-responsive {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

@media (min-width: 768px) {
    .form-check-group-responsive {
        flex-direction: row;
        gap: 1.5rem;
        align-items: center;
    }
}

/* =========================================================
   SELECT DROPDOWN RESPONSIVE
   ========================================================= */

/* Select fields with proper sizing */
select.form-select-responsive,
.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
    cursor: pointer;
    min-width: 100px;
}

/* =========================================================
   INPUT TYPE SPECIFIC
   ========================================================= */

/* Date/time inputs */
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="month"],
input[type="week"] {
    font-size: 16px; /* Prevent iOS zoom */
}

/* Number inputs */
input[type="number"] {
    font-size: 16px;
}

/* Search inputs */
input[type="search"] {
    font-size: 16px;
}

/* Range inputs */
input[type="range"] {
    width: 100%;
    height: 5px;
    cursor: pointer;
}

/* =========================================================
   FORM CARD SECTIONS - Nested sections within form cards
   ========================================================= */

.form-card-section {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 0.375rem;
    padding: 1rem;
    margin: 0;
}

.form-card-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: #495057;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #dee2e6;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.form-card-section .form-responsive-grid {
    gap: var(--form-gap-mobile);
}

@media (min-width: 576px) {
    .form-card-section .form-responsive-grid {
        gap: var(--form-gap-tablet);
    }
}

@media (min-width: 768px) {
    .form-card-section .form-responsive-grid {
        gap: var(--form-gap-desktop);
    }
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
    border: none;
}

/* =========================================================
   UTILITY CLASSES
   ========================================================= */

/* Hide label on mobile, show on desktop */
.label-hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .label-hide-mobile {
        display: block;
    }
}

/* Show label on mobile only */
.label-show-mobile {
    display: block;
}

@media (min-width: 768px) {
    .label-show-mobile {
        display: none;
    }
}

/* Full width on mobile, auto on desktop */
.width-mobile-full {
    width: 100%;
}

@media (min-width: 768px) {
    .width-mobile-full {
        width: auto;
    }
}

/* Responsive margin utilities */
.mt-responsive {
    margin-top: var(--form-gap-mobile);
}

@media (min-width: 768px) {
    .mt-responsive {
        margin-top: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .mt-responsive {
        margin-top: var(--form-gap-desktop);
    }
}

.mb-responsive {
    margin-bottom: var(--form-gap-mobile);
}

@media (min-width: 768px) {
    .mb-responsive {
        margin-bottom: var(--form-gap-tablet);
    }
}

@media (min-width: 1024px) {
    .mb-responsive {
        margin-bottom: var(--form-gap-desktop);
    }
}

/* =========================================================
   PRINT STYLES FOR FORMS
   ========================================================= */

@media print {
    .form-actions-responsive,
    .btn-group-responsive {
        display: none;
    }

    .form-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    input,
    select,
    textarea {
        border: 1px solid #000;
        background-color: white;
    }
}

/* =========================================================
   END FORM RESPONSIVE UTILITIES
   ========================================================= */