/* ========================================
   Advanced Forms - Floating Labels & Validation
   ======================================== */

/* Ensure proper box-sizing */
.form_field_floating *,
.password_field_wrapper *,
.form_checkbox_modern *,
.form_radio_modern * {
    box-sizing: border-box;
}

/* Floating Label Container */
.form_field_floating {
    position: relative;
    margin-bottom: var(--space-xl);
}

.form_field_floating input,
.form_field_floating textarea,
.form_field_floating select {
    width: 100%;
    padding: 1.25rem 1rem 0.5rem;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg-tertiary);
    transition: all var(--transition-base);
    outline: none;
}

.form_field_floating label {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--color-text-muted);
    pointer-events: none;
    transition: all var(--transition-base);
    background: transparent;
    padding: 0 0.25rem;
}

/* Floating state when focused or has value */
.form_field_floating input:focus ~ label,
.form_field_floating input:not(:placeholder-shown) ~ label,
.form_field_floating textarea:focus ~ label,
.form_field_floating textarea:not(:placeholder-shown) ~ label,
.form_field_floating select:focus ~ label,
.form_field_floating select:not([value=""]) ~ label {
    top: 0;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--color-primary);
    background: var(--color-bg-card);
    padding: 0 0.5rem;
    font-weight: 600;
}

.form_field_floating input:focus,
.form_field_floating textarea:focus,
.form_field_floating select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(68, 176, 236, 0.1);
    background-color: var(--color-bg-primary);
}

.form_field_floating input:hover,
.form_field_floating textarea:hover,
.form_field_floating select:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-bg-primary);
}

/* Input with icon */
.form_field_with_icon {
    position: relative;
}

.form_field_with_icon input {
    padding-left: 3rem;
}

.form_field_icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1.25rem;
    pointer-events: none;
    z-index: 1;
}

.form_field_with_icon input:focus ~ .form_field_icon {
    color: var(--color-primary);
}

/* Validation States */
.form_field_floating.is-valid input,
.form_field_floating.is-valid textarea,
.form_field_floating.is-valid select {
    border-color: var(--color-success);
    background-color: rgba(40, 167, 69, 0.05);
}

.form_field_floating.is-valid label {
    color: var(--color-success);
}

.form_field_floating.is-invalid input,
.form_field_floating.is-invalid textarea,
.form_field_floating.is-invalid select {
    border-color: var(--color-error);
    background-color: rgba(157, 0, 0, 0.05);
}

.form_field_floating.is-invalid label {
    color: var(--color-error);
}

/* Validation Icons */
.form_validation_icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.form_field_floating.is-valid .form_validation_icon {
    opacity: 1;
    color: var(--color-success);
}

.form_field_floating.is-invalid .form_validation_icon {
    opacity: 1;
    color: var(--color-error);
}

/* Inline Error Message */
.form_error_message {
    display: none;
    margin-top: var(--space-sm);
    padding: 0.5rem 0.75rem;
    background: linear-gradient(135deg, #ffdede 0%, #ffe8e8 100%);
    border-left: 3px solid var(--color-error);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-error);
    animation: slideDown var(--transition-base);
}

.form_field_floating.is-invalid .form_error_message {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Success Message */
.form_success_message {
    display: none;
    margin-top: var(--space-sm);
    padding: 0.5rem 0.75rem;
    background: linear-gradient(135deg, #d4edda 0%, #e7f5ea 100%);
    border-left: 3px solid var(--color-success);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-success);
    animation: slideDown var(--transition-base);
}

.form_field_floating.is-valid .form_success_message {
    display: block;
}

/* ========================================
   Password Strength Meter
   ======================================== */

.password_field_wrapper {
    position: relative;
}

.password_strength_meter {
    margin-top: var(--space-sm);
    height: 4px;
    background-color: var(--color-divider);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.password_strength_bar {
    height: 100%;
    width: 0;
    transition: all var(--transition-slow);
    border-radius: var(--radius-full);
}

.password_strength_bar.weak {
    width: 25%;
    background: linear-gradient(90deg, #f77 0%, #c55 100%);
}

.password_strength_bar.fair {
    width: 50%;
    background: linear-gradient(90deg, #ffc400 0%, #f0ad4e 100%);
}

.password_strength_bar.good {
    width: 75%;
    background: linear-gradient(90deg, #5bc0de 0%, #31b0d5 100%);
}

.password_strength_bar.strong {
    width: 100%;
    background: linear-gradient(90deg, #28a745 0%, #20893a 100%);
}

.password_strength_text {
    margin-top: var(--space-xs);
    font-size: 0.8125rem;
    font-weight: 500;
    transition: color var(--transition-base);
}

.password_strength_text.weak {
    color: #c55;
}

.password_strength_text.fair {
    color: #f0ad4e;
}

.password_strength_text.good {
    color: #5bc0de;
}

.password_strength_text.strong {
    color: #28a745;
}

/* Password Toggle Button */
.password_toggle_btn {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-text-muted);
    font-size: 1.125rem;
    transition: color var(--transition-fast);
    z-index: 2;
}

.password_toggle_btn:hover {
    color: var(--color-primary);
}

/* Adjust input padding when toggle button exists */
.password_field_wrapper input {
    padding-right: 3rem;
}

/* ========================================
   Form Groups & Layout
   ======================================== */

.form_row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.form_actions {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-divider);
}

.form_actions button,
.form_actions a {
    min-width: 150px;
}

/* Loading State */
.form_field_floating.is-loading input::after {
    content: '';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-divider);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: translateY(-50%) rotate(360deg); }
}

/* Checkbox & Radio Modern Styles */
.form_checkbox_modern,
.form_radio_modern {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--space-md);
}

.form_checkbox_modern:hover,
.form_radio_modern:hover {
    border-color: var(--color-primary);
    background-color: rgba(68, 176, 236, 0.05);
}

.form_checkbox_modern input,
.form_radio_modern input {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.form_checkbox_modern label,
.form_radio_modern label {
    margin: 0;
    cursor: pointer;
    flex: 1;
}

.form_checkbox_modern input:checked ~ *,
.form_radio_modern input:checked ~ * {
    color: var(--color-primary);
    font-weight: 600;
}

/* Responsive */
@media screen and (max-width: 700px) {
    .form_row {
        grid-template-columns: 1fr;
    }

    .form_actions {
        flex-direction: column;
    }

    .form_actions button,
    .form_actions a {
        width: 100%;
    }
}