/**
 * Form Components
 * Form inputs, validation, and multi-step form styles
 */

/* === FORM GROUP === */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

/* === INPUT STYLES === */
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem; /* 14px 16px */
    border: var(--border-width-thick) solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    background-color: var(--color-white);
    transition: all var(--transition-base);
    appearance: none;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--color-primary);
}

/* === INPUT STATES === */
.form-group input[aria-invalid="true"],
.form-group select[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
    border-color: var(--color-error);
}

.form-group input[aria-invalid="true"]:focus,
.form-group select[aria-invalid="true"]:focus,
.form-group textarea[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

/* === TEXTAREA SPECIFIC === */
.form-group textarea {
    resize: vertical;
    min-height: 100px;
    line-height: var(--line-height-normal);
}

.modal .form-group textarea {
    min-height: 100px;
}

/* === MODAL FORM STYLES === */
.modal .form-group input,
.modal .form-group select,
.modal .form-group textarea {
    padding: 1rem 1.25rem; /* 16px 20px */
    font-size: var(--font-size-base);
}

/* === ERROR MESSAGES === */
.error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: 0.3125rem; /* 5px */
    min-height: 1.25rem; /* 20px */
    opacity: 0;
    transition: opacity var(--transition-base);
    line-height: 1.4;
}

.error-message.show {
    opacity: 1;
}

/* === SUCCESS MESSAGES === */
.success-message {
    color: var(--color-success);
    font-size: var(--font-size-sm);
    margin-top: 0.3125rem; /* 5px */
    line-height: 1.4;
}

/* === FORM ERROR STATE === */
.form-error-message {
    background: var(--color-error-bg);
    border: var(--border-width) solid var(--color-error-border);
    color: #c33;
    padding: var(--spacing-base);
    border-radius: var(--border-radius-base);
    margin: var(--spacing-base) 0;
    text-align: center;
    font-size: var(--font-size-sm);
    display: none;
}

.form-error-message.show {
    display: block;
}

/* === MULTI-STEP FORM === */
.form-step {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    transform: translateX(30px);
    transition: all var(--transition-base);
    min-height: 120px;
    pointer-events: none;
    box-sizing: border-box;
}

.form-step.active {
    opacity: 1;
    visibility: visible;
    position: relative;
    transform: translateX(0);
    pointer-events: auto;
}

.form-step.prev {
    transform: translateX(-30px);
}

/* === FORM NAVIGATION === */
.form-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-base);
    border-top: var(--border-width) solid var(--color-border);
    box-sizing: border-box;
}

.form-navigation .btn {
    flex: 1;
    min-width: 100px;
    max-width: 180px;
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-sm);
    box-sizing: border-box;
}

/* === PROGRESS BAR === */
.progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--color-border);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    width: 20%;
    transition: width var(--transition-base);
    border-radius: var(--border-radius-sm);
}

/* === FORM LABELS === */
.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

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

/* === INPUT GROUPS === */
.input-group {
    position: relative;
    display: flex;
}

.input-group-prepend,
.input-group-append {
    display: flex;
    align-items: center;
    padding: 0 0.75rem;
    background-color: var(--color-background);
    border: var(--border-width-thick) solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.input-group-prepend {
    border-right: none;
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.input-group-append {
    border-left: none;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.input-group input {
    border-radius: 0;
}

.input-group input:first-child {
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.input-group input:last-child {
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

/* === CHECKBOX & RADIO === */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-base);
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: auto;
    margin: 0;
}

.form-check-label {
    margin: 0;
    font-weight: var(--font-weight-normal);
    cursor: pointer;
    line-height: var(--line-height-normal);
}

/* === SELECT DROPDOWN === */
.form-group select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* === FORM VALIDATION STYLES === */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--color-error);
}

.form-group.has-success input,
.form-group.has-success select,
.form-group.has-success textarea {
    border-color: var(--color-success);
}

/* === FLOATING LABELS === */
.form-floating {
    position: relative;
}

.form-floating input,
.form-floating textarea {
    padding: 1rem 0.75rem 0.25rem 0.75rem;
}

.form-floating label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.75rem;
    pointer-events: none;
    border: var(--border-width) solid transparent;
    transform-origin: 0 0;
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
}

.form-floating input:focus ~ label,
.form-floating input:not(:placeholder-shown) ~ label,
.form-floating textarea:focus ~ label,
.form-floating textarea:not(:placeholder-shown) ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* === RESPONSIVE FORM STYLES === */
@media (max-width: 768px) {
    .modal .form-group input,
    .modal .form-group select,
    .modal .form-group textarea {
        padding: 0.875rem 1rem; /* 14px 16px */
    }
    
    .form-navigation {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .form-navigation .btn {
        width: 100%;
        flex: none;
    }
}

@media (max-width: 480px) {
    .form-group {
        margin-bottom: var(--spacing-base);
    }
}