/**
 * FORMS - MUC Banking Application
 * Form-specific styles and validation
 */

/* ===== FORM BASICS ===== */

.form-container {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e9ecef;
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section-title {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

/* ===== ENHANCED FORM CONTROLS ===== */

.form-floating {
    position: relative;
}

.form-floating > .form-control {
    height: calc(3.5rem + 2px);
    line-height: 1.25;
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

/* ===== MODERN VALIDATION FRAMEWORK ===== */

/* Real-time validation states */
.form-control.is-validating {
    border-color: #ffc107;
    background-image: url("data:image/svg+xml,%3csvg width='16' height='16' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M8 2a6 6 0 1 1 0 12A6 6 0 0 1 8 2zM6.5 5a1.5 1.5 0 1 0 3 0 1.5 1.5 0 0 0-3 0z' fill='%23ffc107'/%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);
    padding-right: calc(1.5em + 0.75rem);
}

/* Enhanced valid state */
.form-control.is-valid {
    border-color: #198754;
    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 6.73.53-.53L1.2 4.6 1.2 3.47l.53-.53L3.36 4.57 6.64 1.29l.53.53L3.36 5.63z'/%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);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-valid:focus {
    border-color: #198754;
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
}

/* Enhanced invalid state */
.form-control.is-invalid {
    border-color: #dc3545;
    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 2.4 2.4M8.2 4.6l-2.4 2.4'/%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);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-invalid:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.25);
}

/* Validation feedback */
.valid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #198754;
    animation: slideInUp 0.3s ease-in-out;
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #dc3545;
    font-weight: 500;
    animation: shakeError 0.5s ease-in-out;
}

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

/* Validation animations */
@keyframes slideInUp {
    from {
        transform: translateY(10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes shakeError {
    0%, 20%, 40%, 60%, 80% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
}

/* Form validation groups */
.form-validation-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-validation-group .form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.form-validation-group .form-label .required::after {
    content: " *";
    color: #dc3545;
    font-weight: bold;
}

.form-validation-group .form-text {
    font-size: 0.8125rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

/* Input groups with validation */
.input-group .form-control.is-invalid {
    z-index: 3;
}

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

/* Custom validation tooltips */
.validation-tooltip {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    background-color: var(--color-background);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8125rem;
    margin-top: 0.25rem;
    box-shadow: var(--box-shadow);
}

.validation-tooltip.show {
    display: block;
    animation: fadeIn 0.2s ease-in-out;
}

.validation-tooltip::before {
    content: "";
    position: absolute;
    top: -5px;
    left: 10px;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid rgba(0, 0, 0, 0.9);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Search form specific validation */
.search-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.search-form .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Badge input specific styles */
.badge-input {
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

/* Name input specific styles */
.name-input {
    text-transform: capitalize;
}

/* Amount input specific styles */
.amount-input {
    text-align: right;
    font-family: 'Courier New', monospace;
}

.amount-input::before {
    content: "€ ";
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    pointer-events: none;
}

/* Real-time validation indicators */
.form-control[data-validation-state="typing"] {
    border-color: #6c757d;
    background-color: #f8f9fa;
}

.form-control[data-validation-state="valid"] {
    border-color: #198754;
}

.form-control[data-validation-state="invalid"] {
    border-color: #dc3545;
}

.form-control[data-validation-state="checking"] {
    border-color: #ffc107;
}

/* Accessibility improvements */
.form-control:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-control[aria-invalid="true"] {
    border-color: #dc3545;
}

.form-control[aria-invalid="false"] {
    border-color: #198754;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .form-control,
    .valid-feedback,
    .invalid-feedback,
    .validation-tooltip {
        animation: none;
        transition: none;
    }
}

.form-floating > .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.15);
}

.form-floating > label {
    color: var(--secondary-color);
    font-weight: 500;
}

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

.input-group > .form-control {
    position: relative;
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.input-group-text {
    background-color: var(--light-color);
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    color: var(--dark-color);
    font-weight: 600;
}

/* ===== FORM VALIDATION ===== */

.form-control.is-valid {
    border-color: var(--success-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='m2.3 6.73.65-.53L4.5 8 7.5 3.5l-.75-.5L4.5 6z'/%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);
    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 2.4 2.4M8.2 4.6l-2.4 2.4'/%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: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--success-color);
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--danger-color);
    font-weight: 500;
}

/* ===== RADIO BUTTONS & CHECKBOXES ===== */

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

.form-check-input {
    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: 2px solid var(--secondary-color);
    appearance: none;
    color: var(--primary-color);
}

.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:checked[type="radio"] {
    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:checked[type="checkbox"] {
    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 10 3 3 6-6'/%3e%3c/svg%3e");
}

.form-check-label {
    color: var(--dark-color);
    font-weight: 500;
    cursor: pointer;
}

/* ===== SEARCH FORMS ===== */

.search-box {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.search-box .form-control {
    padding-right: 3rem;
    border-radius: 25px;
    border: 2px solid #e9ecef;
    transition: var(--transition);
}

.search-box .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.15);
}

.search-box .search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--secondary-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-box .search-btn:hover {
    color: var(--primary-color);
}

/* ===== FORM ACTIONS ===== */

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid #e9ecef;
}

.form-actions .btn {
    min-width: 120px;
}

/* ===== RESPONSIVE FORM DESIGN ===== */

@media (max-width: 768px) {
    .form-container {
        padding: 1rem;
        margin: 0.5rem;
    }

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

    .form-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .search-box {
        max-width: 100%;
    }
}

/* ===== ACCESSIBILITY ===== */

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    outline: 0;
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
}

.form-control[readonly],
.form-control[disabled] {
    background-color: #f8f9fa;
    opacity: 0.65;
    cursor: not-allowed;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}