/* ========================== Form Input System - Proportional & Responsive ========================== */

/* Base Form Control Styles */
.form-control-system {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    min-height: 36px;
}

.form-control-system:focus {
    color: #495057;
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Form Control Sizes */
.form-control-system-sm {
    padding: 0.375rem 0.5rem;
    font-size: 0.8rem;
    min-height: 32px;
    border-radius: 0.25rem;
}

.form-control-system-lg {
    padding: 0.625rem 1rem;
    font-size: 1rem;
    min-height: 44px;
    border-radius: 0.5rem;
}

/* Form Floating Adjustments */
.form-floating-system {
    position: relative;
}

.form-floating-system > .form-control-system,
.form-floating-system > .form-select-system {
    height: calc(3rem + 2px);
    line-height: 1.25;
    padding: 0.75rem 0.75rem;
}

.form-floating-system > label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 0.75rem 0.75rem;
    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: #6c757d;
    font-size: 0.85rem;
}

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

/* Form Floating Small */
.form-floating-system-sm > .form-control-system {
    height: calc(2.5rem + 2px);
    padding: 0.5rem 0.75rem;
}

.form-floating-system-sm > label {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
}

/* Form Select System */
.form-select-system {
    display: block;
    width: 100%;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    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='m1 6 7 7 7-7'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    appearance: none;
    min-height: 36px;
}

.form-select-system:focus {
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Textarea System */
.form-textarea-system {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    resize: vertical;
    min-height: 80px;
}

.form-textarea-system:focus {
    color: #495057;
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Input Group System */
.input-group-system {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    width: 100%;
}

.input-group-system > .form-control-system,
.input-group-system > .form-select-system {
    position: relative;
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
}

.input-group-system-text {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    text-align: center;
    white-space: nowrap;
    background-color: #e9ecef;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
}

/* Form Check System */
.form-check-system {
    display: block;
    min-height: 1.5rem;
    padding-left: 1.5em;
    margin-bottom: 0.125rem;
}

.form-check-system .form-check-input {
    float: left;
    margin-left: -1.5em;
    width: 1em;
    height: 1em;
    margin-top: 0.25em;
    vertical-align: top;
    background-color: #fff;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    border: 1px solid rgba(0, 0, 0, 0.25);
    appearance: none;
    color-adjust: exact;
}

.form-check-system .form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.form-check-system .form-check-label {
    color: #495057;
    font-size: 0.9rem;
}

/* Form Validation */
.form-control-system.is-valid {
    border-color: #198754;
    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='%23198754' d='m2.3 6.73.94-.94 1.44 1.44L7.4 4.5l-.94-.94L4.5 5.5z'/%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);
}

.form-control-system.is-invalid {
    border-color: #dc3545;
    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='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 4.6 1.4 1.4M7.2 4.6l-1.4 1.4'/%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);
}

.valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: #198754;
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: #dc3545;
}

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

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

/* ========================== Mobile Responsive ========================== */

@media (max-width: 767.98px) {
    .form-control-system {
        font-size: 16px; /* Prevent zoom on iOS */
        padding: 0.5rem 0.75rem;
        min-height: 44px; /* Touch-friendly */
    }
    
    .form-floating-system > .form-control-system {
        height: calc(3.25rem + 2px);
        padding: 0.875rem 0.75rem;
    }
    
    .form-floating-system > label {
        padding: 0.875rem 0.75rem;
    }
    
    .form-select-system {
        font-size: 16px;
        padding: 0.5rem 2.25rem 0.5rem 0.75rem;
        min-height: 44px;
    }
    
    .form-textarea-system {
        font-size: 16px;
        min-height: 100px;
    }
}

@media (max-width: 575.98px) {
    .form-control-system {
        padding: 0.5rem 0.625rem;
    }
    
    .form-floating-system > .form-control-system {
        padding: 0.75rem 0.625rem;
    }
    
    .form-floating-system > label {
        padding: 0.75rem 0.625rem;
        font-size: 0.8rem;
    }
}

/* ========================== Override Bootstrap Default ========================== */

/* Override Bootstrap form-control to use system styles */
.form-control {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    min-height: 36px;
}

.form-floating > .form-control {
    height: calc(3rem + 2px);
    padding: 0.75rem 0.75rem;
}

.form-floating > label {
    padding: 0.75rem 0.75rem;
    font-size: 0.85rem;
}

.form-select {
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    font-size: 0.9rem;
    min-height: 36px;
}

/* ========================== Utility Classes ========================== */

.form-compact .form-control-system,
.form-compact .form-select-system {
    padding: 0.375rem 0.5rem;
    font-size: 0.8rem;
    min-height: 32px;
}

.form-compact .form-floating-system > .form-control-system {
    height: calc(2.5rem + 2px);
    padding: 0.5rem 0.5rem;
}

.form-compact .form-floating-system > label {
    padding: 0.5rem 0.5rem;
    font-size: 0.75rem;
}

/* Form spacing */
.form-group-system {
    margin-bottom: 1rem;
}

.form-group-system-sm {
    margin-bottom: 0.75rem;
}

.form-group-system-lg {
    margin-bottom: 1.25rem;
}

/* Focus ring improvements */
.form-control-system:focus,
.form-select-system:focus,
.form-textarea-system:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Disabled state */
.form-control-system:disabled,
.form-select-system:disabled {
    background-color: #e9ecef;
    opacity: 1;
}

/* Readonly state */
.form-control-system[readonly] {
    background-color: #e9ecef;
    opacity: 1;
}

/* Placeholder styling */
.form-control-system::placeholder {
    color: #6c757d;
    opacity: 1;
}

/* File input styling */
.form-control-system[type="file"] {
    overflow: hidden;
}

.form-control-system[type="file"]:not(:disabled):not([readonly]) {
    cursor: pointer;
}

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

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

.form-range-system::-webkit-slider-track {
    width: 100%;
    height: 0.5rem;
    color: transparent;
    cursor: pointer;
    background-color: #dee2e6;
    border-color: transparent;
    border-radius: 1rem;
}

.form-range-system::-webkit-slider-thumb {
    width: 1rem;
    height: 1rem;
    margin-top: -0.25rem;
    background-color: #0d6efd;
    border: 0;
    border-radius: 1rem;
    appearance: none;
}

.form-range-system::-webkit-slider-thumb:active {
    background-color: #b6d7ff;
}