/**
 * Form Validation & Enhancement Styles
 * Provides visual feedback for form validation and improved UX
 */

/* Enhanced Focus States */
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #6b97c4;
    box-shadow: 0 0 0 3px rgba(107, 151, 196, 0.15);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Valid State */
input.is-valid,
textarea.is-valid,
select.is-valid {
    border-color: #10b981 !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2310b981'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 0.75rem center;
    background-size: 1.25rem 1.25rem;
    padding-left: 2.75rem !important;
}

[dir="rtl"] input.is-valid,
[dir="rtl"] textarea.is-valid,
[dir="rtl"] select.is-valid {
    background-position: right 0.75rem center;
    padding-left: 1rem !important;
    padding-right: 2.75rem !important;
}

input.is-valid:focus,
textarea.is-valid:focus,
select.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* Invalid State */
input.is-invalid,
textarea.is-invalid,
select.is-invalid {
    border-color: #ef4444 !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ef4444'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-2h2v2zm0-4h-2V7h2v6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 0.75rem center;
    background-size: 1.25rem 1.25rem;
    padding-left: 2.75rem !important;
}

[dir="rtl"] input.is-invalid,
[dir="rtl"] textarea.is-invalid,
[dir="rtl"] select.is-invalid {
    background-position: right 0.75rem center;
    padding-left: 1rem !important;
    padding-right: 2.75rem !important;
}

input.is-invalid:focus,
textarea.is-invalid:focus,
select.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

/* Validation Message */
.form-feedback {
    display: block;
    margin-top: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.5;
}

.form-feedback.is-valid {
    color: #10b981;
}

.form-feedback.is-invalid {
    color: #ef4444;
}

.form-feedback-icon {
    display: inline-block;
    width: 0.875rem;
    height: 0.875rem;
    margin-inline-end: 0.25rem;
    vertical-align: middle;
}

/* Enhanced Placeholder */
input::placeholder,
textarea::placeholder {
    color: #98a2b3;
    opacity: 1;
    transition: opacity 0.2s ease;
}

input:focus::placeholder,
textarea:focus::placeholder {
    opacity: 0.6;
}

/* Required Field Indicator */
.form-label .req,
label .req {
    color: #ef4444;
    font-weight: 700;
    margin-inline-start: 0.125rem;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 0.5rem;
    height: 0.375rem;
    border-radius: 9999px;
    background-color: #e8eef5;
    overflow: hidden;
    position: relative;
}

.password-strength__bar {
    height: 100%;
    transition: width 0.3s ease, background-color 0.3s ease;
    border-radius: 9999px;
}

.password-strength__bar--weak {
    width: 33.33%;
    background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
}

.password-strength__bar--medium {
    width: 66.66%;
    background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
}

.password-strength__bar--strong {
    width: 100%;
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
}

.password-strength__text {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.password-strength__text--weak {
    color: #ef4444;
}

.password-strength__text--medium {
    color: #f59e0b;
}

.password-strength__text--strong {
    color: #10b981;
}

/* Character Counter */
.char-counter {
    margin-top: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #667085;
    text-align: left;
}

[dir="rtl"] .char-counter {
    text-align: right;
}

.char-counter--warning {
    color: #f59e0b;
}

.char-counter--danger {
    color: #ef4444;
}

/* Input Group (with icons) */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group__icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #667085;
    pointer-events: none;
    font-size: 1rem;
}

[dir="rtl"] .input-group__icon {
    left: auto;
    right: 0.75rem;
}

.input-group input {
    padding-left: 2.5rem !important;
}

[dir="rtl"] .input-group input {
    padding-left: 1rem !important;
    padding-right: 2.5rem !important;
}

.input-group input:focus ~ .input-group__icon {
    color: #6b97c4;
}

.input-group input.is-invalid ~ .input-group__icon {
    color: #ef4444;
}

.input-group input.is-valid ~ .input-group__icon {
    color: #10b981;
}

/* Floating Label */
.floating-label {
    position: relative;
    margin-top: 1rem;
}

.floating-label input,
.floating-label textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d8e3f0;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: border-color 0.2s ease;
}

.floating-label label {
    position: absolute;
    right: 1rem;
    top: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #667085;
    pointer-events: none;
    transition: all 0.2s ease;
    background: white;
    padding: 0 0.25rem;
}

[dir="ltr"] .floating-label label {
    right: auto;
    left: 1rem;
}

.floating-label input:focus ~ label,
.floating-label input:not(:placeholder-shown) ~ label,
.floating-label textarea:focus ~ label,
.floating-label textarea:not(:placeholder-shown) ~ label {
    top: -0.5rem;
    font-size: 0.75rem;
    color: #6b97c4;
}

.floating-label input:focus,
.floating-label textarea:focus {
    border-color: #6b97c4;
    outline: none;
}

/* Enhanced Select */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23667085'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 0.75rem center;
    background-size: 1.25rem 1.25rem;
    padding-left: 2.5rem !important;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

[dir="rtl"] select {
    background-position: right 0.75rem center;
    padding-left: 1rem !important;
    padding-right: 2.5rem !important;
}

select:focus {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%236b97c4'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
}

/* Checkbox & Radio Enhancements */
input[type="checkbox"],
input[type="radio"] {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid #d8e3f0;
    transition: all 0.2s ease;
    cursor: pointer;
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
    background-color: #6b97c4;
    border-color: #6b97c4;
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(107, 151, 196, 0.15);
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Form Section Spacing */
.form-section {
    margin-bottom: 1.5rem;
}

.form-section:last-child {
    margin-bottom: 0;
}

.form-section-title {
    font-size: 1rem;
    font-weight: 700;
    color: #1f344d;
    margin-bottom: 1rem;
}

/* Responsive Adjustments */
@media (max-width: 640px) {
    input.is-valid,
    input.is-invalid,
    textarea.is-valid,
    textarea.is-invalid {
        background-size: 1rem 1rem;
        padding-left: 2.5rem !important;
    }
    
    [dir="rtl"] input.is-valid,
    [dir="rtl"] input.is-invalid,
    [dir="rtl"] textarea.is-valid,
    [dir="rtl"] textarea.is-invalid {
        padding-left: 1rem !important;
        padding-right: 2.5rem !important;
    }
}

/* Animation for validation state changes */
@keyframes form-validation-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

.form-validation-shake {
    animation: form-validation-shake 0.3s ease-in-out;
}