/**
 * Form Validation Styles
 * Styles for form validation feedback and UI elements
 */

/* Form Groups */
.form-group {
    position: relative;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Validation States */
.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #e74c3c;
    background-color: #fff5f5;
}

.form-group.error input:focus,
.form-group.error textarea:focus,
.form-group.error select:focus {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-group.success input,
.form-group.success textarea,
.form-group.success select {
    border-color: #27ae60;
    background-color: #f0fff4;
}

.form-group.success input:focus,
.form-group.success textarea:focus,
.form-group.success select:focus {
    border-color: #27ae60;
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.1);
}

/* Success Indicator */
.form-group.success::after {
    content: '✓';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #27ae60;
    font-size: 20px;
    font-weight: bold;
}

.form-group.success label + input,
.form-group.success label + textarea,
.form-group.success label + select {
    padding-right: 40px;
}

/* Error Messages */
.error-message {
    display: block;
    margin-top: 5px;
    color: #e74c3c;
    font-size: 14px;
    font-weight: 500;
    animation: slideDown 0.2s ease-out;
}

.error-message::before {
    content: '⚠ ';
}

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

/* Form Alerts */
.form-alert {
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: 4px;
    position: relative;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.form-alert-error {
    background-color: #fee;
    border: 1px solid #fcc;
    color: #c33;
}

.form-alert-success {
    background-color: #efe;
    border: 1px solid #cfc;
    color: #3a3;
}

.form-alert-warning {
    background-color: #ffeaa7;
    border: 1px solid #fdcb6e;
    color: #856404;
}

.form-alert strong {
    font-weight: 600;
}

.alert-close {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.alert-close:hover {
    opacity: 1;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 10px;
    display: none;
}

.strength-meter {
    height: 6px;
    background-color: #f0f0f0;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.strength-bar {
    height: 100%;
    width: 0;
    transition: all 0.3s ease;
    border-radius: 3px;
}

.strength-bar.strength-weak {
    background-color: #e74c3c;
    width: 20%;
}

.strength-bar.strength-fair {
    background-color: #f39c12;
    width: 40%;
}

.strength-bar.strength-good {
    background-color: #f1c40f;
    width: 60%;
}

.strength-bar.strength-strong {
    background-color: #2ecc71;
    width: 80%;
}

.strength-bar.strength-excellent {
    background-color: #27ae60;
    width: 100%;
}

.strength-text {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 5px;
}

.strength-text.strength-weak {
    color: #e74c3c;
}

.strength-text.strength-fair {
    color: #f39c12;
}

.strength-text.strength-good {
    color: #f1c40f;
}

.strength-text.strength-strong {
    color: #2ecc71;
}

.strength-text.strength-excellent {
    color: #27ae60;
}

.strength-requirements {
    list-style: none;
    padding: 0;
    margin: 5px 0 0 0;
    font-size: 12px;
    color: #666;
}

.strength-requirements li {
    padding: 2px 0;
}

.strength-requirements li::before {
    content: '• ';
    color: #999;
}

/* Character Counter */
.character-counter {
    text-align: right;
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

.character-counter.warning {
    color: #f39c12;
    font-weight: 600;
}

.character-counter.exceeded {
    color: #e74c3c;
    font-weight: 600;
}

/* Loading State */
form.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

form.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Submit Button States */
button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

button[type="submit"]:disabled:hover {
    background-color: initial;
}

/* Required Field Indicator */
.form-group label.required::after {
    content: ' *';
    color: #e74c3c;
}

/* Help Text */
.help-text {
    display: block;
    margin-top: 5px;
    font-size: 13px;
    color: #666;
}

/* Input Icons */
.input-with-icon {
    position: relative;
}

.input-with-icon input {
    padding-left: 40px;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 18px;
}

/* Checkbox and Radio Styles */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-wrapper,
.radio-wrapper {
    display: flex;
    align-items: center;
}

.checkbox-wrapper input[type="checkbox"],
.radio-wrapper input[type="radio"] {
    width: auto;
    margin-right: 8px;
}

/* File Upload */
.file-upload {
    position: relative;
    display: inline-block;
    cursor: pointer;
    width: 100%;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-label {
    display: block;
    padding: 10px 15px;
    background-color: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s;
}

.file-upload:hover .file-upload-label {
    background-color: #e9ecef;
    border-color: #adb5bd;
}

.file-upload.has-file .file-upload-label {
    background-color: #e7f5ff;
    border-color: #339af0;
    border-style: solid;
}

.file-info {
    margin-top: 10px;
    padding: 8px;
    background-color: #f8f9fa;
    border-radius: 4px;
    font-size: 14px;
}

.file-info .file-name {
    font-weight: 600;
}

.file-info .file-size {
    color: #666;
    font-size: 12px;
}

/* Dark Mode Support */
[data-theme="dark"] .form-group label {
    color: #e0e0e0;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
    background-color: #2a2a2a;
    border-color: #444;
    color: #e0e0e0;
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus,
[data-theme="dark"] .form-group select:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

[data-theme="dark"] .form-group.error input,
[data-theme="dark"] .form-group.error textarea,
[data-theme="dark"] .form-group.error select {
    background-color: #3a1a1a;
}

[data-theme="dark"] .form-group.success input,
[data-theme="dark"] .form-group.success textarea,
[data-theme="dark"] .form-group.success select {
    background-color: #1a3a2a;
}

[data-theme="dark"] .form-alert-error {
    background-color: #3a1a1a;
    border-color: #5a2a2a;
    color: #ff9999;
}

[data-theme="dark"] .form-alert-success {
    background-color: #1a3a2a;
    border-color: #2a5a3a;
    color: #99ff99;
}

[data-theme="dark"] .strength-meter {
    background-color: #1a1a1a;
}

[data-theme="dark"] .help-text {
    color: #999;
}

[data-theme="dark"] .character-counter {
    color: #999;
}

[data-theme="dark"] .file-upload-label {
    background-color: #2a2a2a;
    border-color: #444;
    color: #e0e0e0;
}

[data-theme="dark"] .file-upload:hover .file-upload-label {
    background-color: #333;
    border-color: #555;
}

/* Responsive Design */
@media (max-width: 768px) {
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .form-alert {
        padding: 12px 15px;
    }
    
    .alert-close {
        right: 10px;
    }
}

/* Accessibility */
.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;
}

/* Focus Visible */
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}