/* ========================================
   FRANDE ONE - ESTILOS DE FORMULARIOS
   Inputs, Selects, Checkboxes, Radio, etc.
   ======================================== */

/* ========================================
   FORMULARIOS BASE
   ======================================== */

form {
    width: 100%;
}

fieldset {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

legend {
    font-weight: 600;
    color: var(--text-primary);
    padding: 0 var(--spacing-sm);
}

/* ========================================
   FORM GROUPS Y LABELS
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

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

label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9375rem;
}

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

.label-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

/* ========================================
   INPUTS Y TEXTAREAS
   ======================================== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="month"],
input[type="week"],
input[type="time"],
input[type="search"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="password"]:hover,
input[type="tel"]:hover,
input[type="url"]:hover,
input[type="number"]:hover,
input[type="date"]:hover,
select:hover,
textarea:hover {
    border-color: var(--border-medium);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
input[type="month"]:focus,
input[type="week"]:focus,
input[type="time"]:focus,
input[type="search"]:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 158, 255, 0.1);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Placeholder */
::placeholder {
    color: var(--text-tertiary);
    opacity: 1;
}

/* ========================================
   SELECT
   ======================================== */

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
    padding-right: 2.5rem;
}

select::-ms-expand {
    display: none;
}

select option {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

/* ========================================
   CHECKBOX Y RADIO
   ======================================== */

input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: var(--spacing-sm);
    cursor: pointer;
    border: 2px solid var(--border-medium);
    appearance: none;
    background-color: var(--bg-primary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

input[type="checkbox"] {
    border-radius: var(--radius-sm);
}

input[type="radio"] {
    border-radius: var(--radius-full);
}

input[type="checkbox"]:hover,
input[type="radio"]:hover {
    border-color: var(--primary-blue);
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

input[type="checkbox"]:checked {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M13.5 3.5L6 11 2.5 7.5l1-1L6 9l6.5-6.5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px;
}

input[type="radio"]:checked {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='4' fill='white'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 158, 255, 0.1);
}

/* Grupo de checkboxes/radios */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-group label,
.radio-group label {
    display: flex;
    align-items: center;
    margin-bottom: 0;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.checkbox-group label:hover,
.radio-group label:hover {
    background-color: var(--bg-secondary);
}

/* ========================================
   ESTADOS DE VALIDACIÓN
   ======================================== */

/* Success */
input.success,
select.success,
textarea.success {
    border-color: var(--success);
}

input.success:focus,
select.success:focus,
textarea.success:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Error */
input.error,
select.error,
textarea.error {
    border-color: var(--error);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Warning */
input.warning,
select.warning,
textarea.warning {
    border-color: var(--warning);
}

input.warning:focus,
select.warning:focus,
textarea.warning:focus {
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

/* Disabled */
input:disabled,
select:disabled,
textarea:disabled {
    background-color: var(--bg-secondary);
    color: var(--text-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

/* ========================================
   MENSAJES DE AYUDA Y ERROR
   ======================================== */

.help-text {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.error-message {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--error);
    margin-top: var(--spacing-xs);
}

.error-message::before {
    content: "⚠";
    flex-shrink: 0;
}

.success-message {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--success);
    margin-top: var(--spacing-xs);
}

.success-message::before {
    content: "✓";
    flex-shrink: 0;
}

/* ========================================
   INPUT CON ÍCONOS
   ======================================== */

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    padding-left: 2.75rem;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-tertiary);
    pointer-events: none;
}

.input-icon-right {
    position: absolute;
    right: 1rem;
    color: var(--text-tertiary);
}

/* ========================================
   INPUT GROUPS (Input con botón)
   ======================================== */

.input-group {
    display: flex;
    gap: 0;
}

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

.input-group .btn {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    white-space: nowrap;
}

.input-group input:focus {
    z-index: 1;
}

/* ========================================
   FILE UPLOAD
   ======================================== */

input[type="file"] {
    padding: 0.5rem;
    cursor: pointer;
}

input[type="file"]::file-selector-button {
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    margin-right: var(--spacing-md);
    transition: all var(--transition-fast);
}

input[type="file"]::file-selector-button:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-blue);
}

/* Custom File Upload */
.file-upload {
    position: relative;
    display: inline-block;
}

.file-upload input[type="file"] {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    overflow: hidden;
    z-index: -1;
}

.file-upload-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.file-upload-label:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-blue);
}

/* ========================================
   RANGE SLIDER
   ======================================== */

input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    outline: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-blue);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(59, 158, 255, 0.1);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-blue);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(59, 158, 255, 0.1);
}

/* ========================================
   TOGGLE SWITCH
   ======================================== */

.toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-medium);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: var(--white);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle input:checked + .toggle-slider {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle input:focus + .toggle-slider {
    box-shadow: 0 0 0 3px rgba(59, 158, 255, 0.1);
}

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

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
}

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

/* ========================================
   LOADING STATE
   ======================================== */

.form-loading {
    position: relative;
    pointer-events: none;
}

.form-loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .form-loading::after {
    background-color: rgba(10, 30, 61, 0.8);
}

/* ========================================
   RESPONSIVE FORMS
   ======================================== */

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="tel"],
    select,
    textarea {
        font-size: 16px; /* Previene zoom en iOS */
    }
}

/* ========================================
   ACCESIBILIDAD
   ======================================== */

/* Focus visible para teclado */
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Ocultar flechas en inputs numéricos */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}

/* ========================================
   UTILIDADES DE FORMULARIO
   ======================================== */

.form-text-sm {
    font-size: 0.875rem;
}

.form-text-lg {
    font-size: 1.125rem;
}

.form-full-width {
    width: 100%;
}

.form-half-width {
    width: 50%;
}

@media (max-width: 768px) {
    .form-half-width {
        width: 100%;
    }
}