/* ==========================================================================
   Formulario Ninja - Form Styles
   Adaptado a la identidad visual de Academia Británica (acabri.com)
   Mobile-first responsive design
   ========================================================================== */

/* --- CSS Custom Properties --- */
.fninja {
    --fninja-primary: #00205C;
    --fninja-primary-light: #1a3a7c;
    --fninja-primary-dark: #001840;
    --fninja-accent: #FBBA00;
    --fninja-accent-hover: #e5aa00;
    --fninja-accent-light: rgba(251, 186, 0, 0.12);
    --fninja-success: #2e7d32;
    --fninja-success-light: rgba(46, 125, 50, 0.08);
    --fninja-highlight: #e07a5f;
    --fninja-family: #00205C;
    --fninja-bg: #ffffff;
    --fninja-bg-subtle: #F2F2F2;
    --fninja-card-bg: #ffffff;
    --fninja-text: #00205C;
    --fninja-text-light: #4a5568;
    --fninja-text-muted: #7A7A7A;
    --fninja-border: #e2e4e8;
    --fninja-border-focus: #FBBA00;
    --fninja-error: #d32f2f;
    --fninja-error-bg: #fef2f2;
    --fninja-radius: 10px;
    --fninja-radius-lg: 15px;
    --fninja-radius-sm: 6px;
    --fninja-shadow: 0 2px 10px rgba(0, 32, 92, 0.08);
    --fninja-shadow-hover: 0 4px 20px rgba(0, 32, 92, 0.14);
    --fninja-font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --fninja-font-display: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --fninja-transition: 0.3s ease;
    --fninja-transition-fast: 0.15s ease;
}

/* --- Dark theme --- */
.fninja[data-theme="dark"] {
    --fninja-primary: #e8e8e8;
    --fninja-primary-light: #b0b8cc;
    --fninja-bg: #0e1629;
    --fninja-bg-subtle: #162040;
    --fninja-card-bg: #142038;
    --fninja-text: #e8e8e8;
    --fninja-text-light: #a0a8c0;
    --fninja-text-muted: #6a7488;
    --fninja-border: #253050;
    --fninja-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --fninja-shadow-hover: 0 6px 28px rgba(0, 0, 0, 0.4);
    --fninja-error-bg: #3a1a1a;
    --fninja-family: #FBBA00;
}

/* --- Base --- */
.fninja {
    font-family: var(--fninja-font-body);
    color: var(--fninja-text);
    background: var(--fninja-bg);
    border-radius: var(--fninja-radius-lg);
    padding: 24px 16px;
    max-width: 680px;
    margin: 0 auto;
    box-sizing: border-box;
    line-height: 1.5;
    border: 1px solid var(--fninja-border);
}

.fninja *, .fninja *::before, .fninja *::after {
    box-sizing: border-box;
}

.fninja__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;
}

/* --- Progress bar --- */
.fninja__progress {
    margin-bottom: 28px;
}

.fninja__progress-bar {
    height: 6px;
    background: var(--fninja-bg-subtle);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.fninja__progress-fill {
    height: 100%;
    width: 10%;
    background: linear-gradient(90deg, var(--fninja-accent), #fdd835);
    border-radius: 3px;
    transition: width var(--fninja-transition);
}

.fninja__progress-text {
    font-size: 13px;
    color: var(--fninja-text-muted);
    text-align: center;
    font-weight: 500;
}

/* --- Child indicator --- */
.fninja__child-indicator {
    text-align: center;
    padding: 10px 16px;
    margin-bottom: 16px;
    background: var(--fninja-primary);
    color: #fff;
    border-radius: var(--fninja-radius-sm);
    font-size: 14px;
    font-weight: 600;
}

/* --- Steps --- */
.fninja__step {
    display: none;
    opacity: 0;
}

.fninja__step--visible {
    display: block;
    animation: fninja-fade-in 0.35s ease forwards;
}

.fninja__step--exiting {
    animation: fninja-fade-out 0.2s ease forwards;
}

@keyframes fninja-fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fninja-fade-out {
    from { opacity: 1; transform: translateY(0); }
    to   { opacity: 0; transform: translateY(-12px); }
}

.fninja__step-title {
    font-family: var(--fninja-font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--fninja-primary);
    margin: 0 0 8px 0;
    text-align: center;
    line-height: 1.3;
}

.fninja__step-subtitle {
    font-size: 14px;
    color: var(--fninja-text-light);
    margin: 0 0 20px 0;
    text-align: center;
}

.fninja__step-content {
    margin-top: 16px;
}

/* --- Option grid --- */
.fninja__option-grid {
    display: grid;
    gap: 12px;
}

.fninja__option-grid--2col {
    grid-template-columns: 1fr 1fr;
}

.fninja__option-grid--3col {
    grid-template-columns: 1fr 1fr;
}

.fninja__option-grid--inline {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* --- Option card --- */
.fninja__option-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 18px 12px;
    background: var(--fninja-card-bg);
    border: 2px solid var(--fninja-border);
    border-radius: var(--fninja-radius);
    cursor: pointer;
    transition: all var(--fninja-transition-fast);
    text-align: center;
    font-family: inherit;
    font-size: 14px;
    color: var(--fninja-text);
    min-height: 70px;
    outline: none;
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.fninja__option-card:hover {
    border-color: var(--fninja-accent);
    box-shadow: var(--fninja-shadow);
    transform: translateY(-1px);
}

.fninja__option-card:focus-visible {
    border-color: var(--fninja-accent);
    box-shadow: 0 0 0 3px rgba(251, 186, 0, 0.3);
}

.fninja__option-card--selected {
    border-color: var(--fninja-accent);
    background: var(--fninja-accent-light);
    box-shadow: 0 0 0 2px var(--fninja-accent);
}

.fninja__option-card--disabled {
    opacity: 0.4;
    pointer-events: none;
}

.fninja__option-card--small {
    min-height: 48px;
    padding: 12px 24px;
    font-size: 18px;
    font-weight: 700;
}

.fninja__option-card--alt {
    grid-column: 1 / -1;
    background: var(--fninja-bg-subtle);
    border-style: dashed;
    margin-top: 4px;
}

.fninja__option-icon {
    font-size: 28px;
    line-height: 1;
}

.fninja__option-label {
    font-weight: 600;
    font-size: 14px;
    line-height: 1.3;
}

.fninja__option-desc {
    font-size: 12px;
    color: var(--fninja-text-muted);
    line-height: 1.3;
}

.fninja__option-price {
    font-family: var(--fninja-font-display);
    font-size: 14px;
    font-weight: 700;
    color: var(--fninja-accent-hover);
}

/* --- Hour option card (dynamic) --- */
.fninja__hour-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.fninja__hour-label {
    font-weight: 600;
    font-size: 14px;
}

.fninja__hour-price {
    font-family: var(--fninja-font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--fninja-accent-hover);
}

.fninja__hour-period {
    font-size: 12px;
    color: var(--fninja-text-muted);
}

/* --- Sub option --- */
.fninja__sub-option {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--fninja-border);
    text-align: center;
}

.fninja__sub-label {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 12px 0;
    color: var(--fninja-primary);
}

/* --- No options message --- */
.fninja__no-options {
    text-align: center;
    padding: 24px;
    color: var(--fninja-text-muted);
    background: var(--fninja-bg-subtle);
    border-radius: var(--fninja-radius);
    border: 1px dashed var(--fninja-border);
}

/* --- Fieldset --- */
.fninja__fieldset {
    border: none;
    padding: 0;
    margin: 0 0 24px 0;
}

.fninja__fieldset-legend {
    font-size: 15px;
    font-weight: 600;
    color: var(--fninja-primary);
    margin-bottom: 12px;
    padding: 0;
}

/* --- Form fields --- */
.fninja__field-group {
    margin-bottom: 16px;
}

.fninja__field-row {
    display: flex;
    gap: 12px;
}

.fninja__field-group--half {
    flex: 1;
}

.fninja__field-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--fninja-primary);
    margin-bottom: 6px;
}

.fninja__optional {
    font-weight: 400;
    color: var(--fninja-text-muted);
}

.fninja__field-input,
.fninja__field-select,
.fninja__field-textarea {
    display: block;
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;
    font-family: inherit;
    color: var(--fninja-text);
    background: var(--fninja-bg-subtle);
    border: 2px solid var(--fninja-bg-subtle);
    border-radius: var(--fninja-radius-sm);
    transition: border-color var(--fninja-transition-fast), background var(--fninja-transition-fast);
    outline: none;
    -webkit-appearance: none;
}

.fninja__field-input:focus,
.fninja__field-select:focus,
.fninja__field-textarea:focus {
    border-color: var(--fninja-border-focus);
    background: var(--fninja-card-bg);
    box-shadow: 0 0 0 3px rgba(251, 186, 0, 0.15);
}

.fninja__field-input--error,
.fninja__field-select--error {
    border-color: var(--fninja-error);
    background: var(--fninja-error-bg);
}

.fninja__field-textarea {
    resize: vertical;
    min-height: 80px;
}

.fninja__field-select {
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%237A7A7A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

/* --- Date selects --- */
.fninja__date-selects {
    display: flex;
    gap: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.fninja__date-selects .fninja__field-group {
    flex: 1;
}

/* --- Checkbox --- */
.fninja__field-group--checkbox {
    margin-top: 24px;
}

.fninja__checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 13px;
    line-height: 1.4;
}

.fninja__field-checkbox {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 1px;
    accent-color: var(--fninja-primary);
    cursor: pointer;
}

.fninja__checkbox-text a {
    color: var(--fninja-primary);
    text-decoration: underline;
    font-weight: 600;
}

.fninja__checkbox-text a:hover {
    color: var(--fninja-accent);
}

/* --- Error messages --- */
.fninja__field-error {
    color: var(--fninja-error);
    font-size: 13px;
    margin-top: 8px;
    min-height: 0;
    transition: min-height var(--fninja-transition-fast);
}

.fninja__field-error:not(:empty) {
    min-height: 20px;
    padding: 4px 0;
}

/* --- Navigation --- */
.fninja__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--fninja-border);
    gap: 12px;
}

/* --- Buttons --- */
.fninja__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--fninja-radius);
    cursor: pointer;
    transition: all var(--fninja-transition-fast);
    border: 2px solid transparent;
    outline: none;
    min-height: 48px;
    -webkit-tap-highlight-color: transparent;
}

.fninja__btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(251, 186, 0, 0.3);
}

.fninja__btn--next {
    background: var(--fninja-accent);
    color: var(--fninja-primary);
    font-weight: 700;
    margin-left: auto;
}

.fninja__btn--next:hover {
    background: var(--fninja-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--fninja-shadow);
}

.fninja__btn--back {
    background: transparent;
    color: var(--fninja-text-light);
    border-color: var(--fninja-border);
}

.fninja__btn--back:hover {
    background: var(--fninja-bg-subtle);
    border-color: var(--fninja-text-light);
}

.fninja__btn--primary {
    background: var(--fninja-primary);
    color: #fff;
    width: 100%;
}

.fninja[data-theme="dark"] .fninja__btn--primary {
    background: var(--fninja-accent);
    color: #00205C;
}

.fninja__btn--primary:hover {
    background: var(--fninja-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--fninja-shadow);
}

.fninja__btn--accent {
    background: var(--fninja-accent);
    color: var(--fninja-primary);
    font-weight: 700;
    width: 100%;
}

.fninja__btn--accent:hover {
    background: var(--fninja-accent-hover);
    box-shadow: var(--fninja-shadow);
}

.fninja__btn--secondary {
    background: var(--fninja-card-bg);
    color: var(--fninja-text);
    border-color: var(--fninja-border);
    width: 100%;
}

.fninja__btn--secondary:hover {
    border-color: var(--fninja-primary);
    color: var(--fninja-primary);
    background: var(--fninja-bg-subtle);
}

.fninja__btn--outline {
    background: transparent;
    color: var(--fninja-success);
    border-color: var(--fninja-success);
    width: 100%;
}

.fninja__btn--outline:hover {
    background: var(--fninja-success-light);
}

.fninja__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.fninja__link {
    background: none;
    border: none;
    color: var(--fninja-primary);
    cursor: pointer;
    font-size: 14px;
    text-decoration: underline;
    font-family: inherit;
    padding: 8px;
    font-weight: 600;
}

.fninja__link:hover {
    color: var(--fninja-accent);
}

/* --- Result --- */
.fninja__result-card {
    background: var(--fninja-card-bg);
    border-radius: var(--fninja-radius);
    padding: 24px;
    box-shadow: var(--fninja-shadow);
    margin-bottom: 16px;
    border: 1px solid var(--fninja-border);
}

.fninja__result-card--info {
    background: rgba(0, 32, 92, 0.04);
    border: 1px solid var(--fninja-primary);
    text-align: center;
}

.fninja__result-card--info p {
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

.fninja__result-card--success {
    background: var(--fninja-success-light);
    border: 1px solid var(--fninja-success);
    text-align: center;
}

.fninja__success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--fninja-success);
    color: #fff;
    font-size: 24px;
    margin-bottom: 12px;
}

.fninja__result-card--success h3 {
    font-size: 18px;
    margin: 0 0 8px 0;
    color: var(--fninja-text);
}

.fninja__result-card--success p {
    font-size: 14px;
    color: var(--fninja-text-light);
    margin: 0;
}

.fninja__result-summary {
    margin-bottom: 16px;
}

.fninja__result-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--fninja-border);
}

.fninja__result-summary-row:last-child {
    border-bottom: none;
}

.fninja__result-summary-label {
    color: var(--fninja-text-muted);
}

.fninja__result-summary-value {
    font-weight: 600;
}

.fninja__result-price {
    text-align: center;
    padding-top: 16px;
    border-top: 2px solid var(--fninja-primary);
}

.fninja__result-price-amount {
    font-family: var(--fninja-font-display);
    font-size: 36px;
    font-weight: 700;
    color: var(--fninja-primary);
    line-height: 1.1;
}

.fninja__result-price-period {
    font-size: 14px;
    color: var(--fninja-text-muted);
}

/* Family result items */
.fninja__result-family-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--fninja-border);
}

.fninja__result-family-item:last-child {
    border-bottom: none;
}

.fninja__result-family-item-header {
    font-weight: 600;
    font-size: 15px;
    color: var(--fninja-primary);
    margin-bottom: 6px;
}

.fninja__result-family-item-detail {
    font-size: 13px;
    color: var(--fninja-text-muted);
    margin-bottom: 4px;
}

.fninja__result-family-item-price {
    font-family: var(--fninja-font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--fninja-primary);
}

.fninja__result-family-totals {
    padding-top: 16px;
    margin-top: 8px;
    border-top: 2px solid var(--fninja-primary);
}

.fninja__result-family-totals-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 14px;
}

.fninja__result-family-totals-row--discount {
    color: var(--fninja-success);
}

.fninja__result-family-totals-row--total {
    font-size: 18px;
    font-weight: 700;
    padding-top: 8px;
    border-top: 1px solid var(--fninja-border);
    margin-top: 4px;
}

.fninja__result-family-totals-row--total .fninja__result-family-total-amount {
    font-family: var(--fninja-font-display);
    color: var(--fninja-primary);
}

.fninja__result-disclaimer {
    font-size: 12px;
    color: var(--fninja-text-muted);
    text-align: center;
    margin: 0 0 4px 0;
    font-style: italic;
}

.fninja__result-discount-note {
    font-size: 12px;
    color: var(--fninja-success);
    text-align: center;
    margin: 0 0 20px 0;
    font-weight: 600;
}

.fninja__result-ctas {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.fninja__result-edit {
    text-align: center;
    margin-top: 16px;
}

/* --- Loading --- */
.fninja__loading {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: fninja-spin 0.6s linear infinite;
}

@keyframes fninja-spin {
    to { transform: rotate(360deg); }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
    .fninja__step--visible { animation: none; opacity: 1; }
    .fninja__step--exiting { animation: none; }
    .fninja__progress-fill { transition: none; }
    .fninja__option-card { transition: none; }
    .fninja__btn { transition: none; }
    .fninja__loading { animation-duration: 1.5s; }
}

/* --- Tablet (768px) --- */
@media (min-width: 768px) {
    .fninja {
        padding: 36px 32px;
    }

    .fninja__step-title {
        font-size: 26px;
    }

    .fninja__option-grid--3col {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .fninja__option-card {
        padding: 22px 16px;
        min-height: 80px;
    }

    .fninja__result-ctas {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .fninja__result-ctas .fninja__btn {
        width: auto;
        flex: 1;
        min-width: 180px;
    }
}

/* --- Desktop (1024px) --- */
@media (min-width: 1024px) {
    .fninja {
        padding: 44px 40px;
    }

    .fninja__step-title {
        font-size: 28px;
    }

    .fninja__option-card {
        padding: 24px 20px;
    }
}

/* --- External link buttons (empresa/colegio) --- */
.fninja__external-links {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--fninja-border);
}

.fninja__external-link {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--fninja-border);
    border-radius: var(--fninja-radius);
    background: var(--fninja-bg-subtle);
    color: var(--fninja-text);
    font-family: var(--fninja-font-body);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: border-color var(--fninja-transition-fast), box-shadow var(--fninja-transition-fast), background var(--fninja-transition-fast);
    cursor: pointer;
}

.fninja__external-link:hover,
.fninja__external-link:focus {
    border-color: var(--fninja-accent);
    background: var(--fninja-accent-light);
    box-shadow: var(--fninja-shadow-hover);
    text-decoration: none;
    color: var(--fninja-text);
}

.fninja__external-link .fninja__option-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.fninja__external-link .fninja__option-label {
    font-size: 14px;
}

@media (max-width: 479px) {
    .fninja__external-links {
        flex-direction: column;
    }
}

/* --- Matrícula row --- */
.fninja__result-summary-row--matricula {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--fninja-border);
}

.fninja__result-matricula {
    margin-top: 4px;
}

/* --- Material note --- */
.fninja__result-material-note {
    font-size: 13px;
    color: var(--fninja-text-muted);
    font-style: italic;
    margin: 8px 0 4px;
}

/* --- Family totals matricula row --- */
.fninja__result-family-totals-row--matricula {
    font-size: 13px;
    color: var(--fninja-text-muted);
    border-top: 1px dashed var(--fninja-border);
    padding-top: 8px;
    margin-top: 4px;
}