/* ==========================================
   Coffee Vending System - Forms Styles
   ========================================== */

/* Form Container */
.form-container {
    background: #fff;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--box-shadow-sm);
    margin-bottom: 2rem;
}

.form-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

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

.form-label-help {
    font-weight: 400;
    color: var(--gray-600);
    font-size: 0.75rem;
    margin-left: 0.25rem;
}

/* Form Controls */
.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--dark-color);
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.form-control:focus {
    color: var(--dark-color);
    background-color: #fff;
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-control::placeholder {
    color: var(--gray-500);
    opacity: 1;
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--gray-200);
    opacity: 1;
}

/* Form Control Sizes */
.form-control-lg {
    padding: 0.75rem 1rem;
    font-size: 1.25rem;
    border-radius: var(--border-radius-lg);
}

.form-control-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border-radius: var(--border-radius);
}

/* Form Control Validation States */
.form-control.is-valid {
    border-color: var(--success-color);
    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 6.73L.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);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    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 stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' 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);
}

/* Form Text */
.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--gray-600);
}

.form-text.text-muted {
    color: var(--gray-500);
}

/* Form Select */
.form-select {
    display: block;
    width: 100%;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--dark-color);
    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='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition-base);
    appearance: none;
}

.form-select:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-select:disabled {
    background-color: var(--gray-200);
}

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

.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 var(--gray-400);
    appearance: none;
    color-adjust: exact;
}

.form-check-input[type="checkbox"] {
    border-radius: 0.25em;
}

.form-check-input[type="radio"] {
    border-radius: 50%;
}

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

.form-check-input[type="checkbox"]:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
}

.form-check-input[type="radio"]:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e");
}

.form-check-input:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-check-label {
    display: inline-block;
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--dark-color);
}

/* Form Switch */
.form-switch {
    padding-left: 2.5em;
}

.form-switch .form-check-input {
    width: 2em;
    margin-left: -2.5em;
    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='%23adb5bd'/%3e%3c/svg%3e");
    background-position: left center;
    border-radius: 2em;
    transition: background-position .15s ease-in-out;
}

.form-switch .form-check-input:focus {
    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='%23adb5bd'/%3e%3c/svg%3e");
}

.form-switch .form-check-input:checked {
    background-position: right center;
    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='%23fff'/%3e%3c/svg%3e");
}

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

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

.form-range::-webkit-slider-thumb {
    appearance: none;
    width: 1rem;
    height: 1rem;
    background: var(--primary-color);
    border: 0;
    border-radius: 1rem;
    transition: background-color .15s ease-in-out, transform .15s ease-in-out;
}

.form-range::-webkit-slider-thumb:focus {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

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

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--dark-color);
    text-align: center;
    white-space: nowrap;
    background-color: var(--gray-200);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

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

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

.input-group .btn {
    position: relative;
    z-index: 2;
}

.input-group .btn:focus {
    z-index: 3;
}

.input-group-lg .form-control,
.input-group-lg .input-group-text {
    padding: 0.75rem 1rem;
    font-size: 1.25rem;
    border-radius: var(--border-radius-lg);
}

.input-group-sm .form-control,
.input-group-sm .input-group-text {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border-radius: var(--border-radius);
}

/* Floating Labels */
.form-floating {
    position: relative;
}

.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 0.75rem;
    pointer-events: none;
    border: 1px solid transparent;
    transform-origin: 0 0;
    transition: opacity .1s ease-in-out, transform .1s ease-in-out;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
    opacity: .65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* Form Validation Feedback */
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--danger-color);
}

.invalid-tooltip {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 5;
    display: none;
    max-width: 100%;
    padding: 0.25rem 0.5rem;
    margin-top: 0.1rem;
    font-size: 0.875rem;
    color: #fff;
    background-color: var(--danger-color);
    border-radius: var(--border-radius);
}

.is-invalid ~ .invalid-feedback,
.is-invalid ~ .invalid-tooltip {
    display: block;
}

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

.is-valid ~ .valid-feedback {
    display: block;
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.form-actions-start {
    justify-content: flex-start;
}

.form-actions-center {
    justify-content: center;
}

/* Form Row */
.form-row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -0.5rem;
    margin-left: -0.5rem;
}

.form-row > .col,
.form-row > [class*="col-"] {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
}

/* Form Inline */
.form-inline {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
}

.form-inline .form-check {
    width: 100%;
}

/* Responsive Forms */
@media (max-width: 768px) {
    .form-container {
        padding: 1.5rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

/* Form Loading State */
.form-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2rem;
    height: 2rem;
    margin-top: -1rem;
    margin-left: -1rem;
    border: 0.25rem solid var(--primary-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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