/* ==========================================================================
   SISTEN / Notifica — Account Pages & Forms (Registrazione, Recupero, Verifica)
   Stile allineato al design system Cobalt / UBold e ai tokens ufficiali
   ========================================================================== */

.account-page {
    padding-block: var(--space-7) var(--space-8);
    background-color: var(--color-paper-2);
    min-height: calc(100vh - 16rem);
}

.account-page__shell {
    max-width: 54rem;
    margin-inline: auto;
    padding-inline: var(--space-4);
}

.account-card {
    background-color: var(--color-paper);
    border: var(--rule-fine) solid var(--color-rule);
    border-radius: var(--radius-panel);
    box-shadow: 0 0.25rem 1.25rem var(--color-shadow);
    overflow: hidden;
    margin-block-end: var(--space-7);
}

.account-card__header {
    background-color: var(--color-paper);
    border-bottom: var(--rule-fine) solid var(--color-rule);
    padding: var(--space-6);
}

.account-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-block-end: var(--space-3);
}

.account-card__badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-pill);
    background-color: var(--color-accent-soft);
    color: var(--color-accent-strong);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.account-card__back {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-neutral);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    transition: color var(--dur-micro) var(--ease-out);
}

.account-card__back:hover {
    color: var(--color-accent-strong);
}

.account-card__title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-ink);
    margin-block: 0 var(--space-1);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.account-card__subtitle {
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin: 0;
    line-height: 1.45;
}

.account-card__body {
    padding: var(--space-6);
}

@media (min-width: 768px) {
    .account-card__header {
        padding: var(--space-7) var(--space-7) var(--space-5);
    }
    .account-card__body {
        padding: var(--space-7);
    }
}

/* --- Validation Summary & Alerts --- */
.validation-summary {
    margin-block-end: var(--space-5);
    padding: var(--space-4);
    border: 0.0625rem solid var(--color-error);
    border-radius: var(--radius-control);
    background-color: var(--color-error-soft);
    color: var(--color-error);
}

.validation-summary:empty {
    display: none;
}

.validation-summary ul {
    margin: var(--space-2) 0 0;
    padding-inline-start: var(--space-5);
    font-size: var(--text-sm);
    font-weight: 600;
}

.validation-summary li {
    margin-block-end: var(--space-1);
}

.step-alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-control);
    margin-block-end: var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    animation: stepFadeIn var(--dur-short) var(--ease-out);
}

.step-alert--error {
    background-color: var(--color-error-soft);
    border: var(--rule-fine) solid var(--color-error);
    color: var(--color-error);
}

.step-alert svg {
    flex-shrink: 0;
}

/* --- Subject Selector Cards --- */
.subject-selector {
    margin-block-end: var(--space-6);
    padding-block-end: var(--space-6);
    border-bottom: var(--rule-fine) solid var(--color-rule);
}

.subject-selector__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-block-end: var(--space-3);
}

.subject-selector__label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-ink-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.subject-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .subject-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.subject-card {
    position: relative;
    border: var(--rule-fine) solid var(--color-rule-strong);
    background-color: var(--color-paper);
    border-radius: var(--radius-control);
    padding: var(--space-3) var(--space-2);
    text-align: center;
    cursor: pointer;
    transition: all var(--dur-short) var(--ease-out);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 5.5rem;
    color: var(--color-ink);
}

.subject-card:hover {
    border-color: var(--color-accent);
    background-color: var(--color-paper-2);
}

.subject-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.subject-card--active,
.subject-card:has(input[type="radio"]:checked) {
    border-color: var(--color-accent);
    background-color: var(--color-accent-soft);
    color: var(--color-accent-strong);
    font-weight: 700;
    box-shadow: 0 0 0 0.0625rem var(--color-accent);
}

.subject-card__icon {
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: inherit;
}

.subject-card__title {
    font-size: var(--text-sm);
    line-height: 1.2;
}

/* --- Progress Stepper --- */
.stepper {
    display: flex;
    justify-content: space-between;
    margin-block-end: var(--space-6);
    position: relative;
    padding-inline: var(--space-4);
}

.stepper::before {
    content: "";
    position: absolute;
    top: 1.35rem;
    left: 3.5rem;
    right: 3.5rem;
    height: 0.125rem;
    background-color: var(--color-rule-strong);
    z-index: 1;
}

.stepper__step {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    background: transparent;
    border: 0;
    padding: 0;
    cursor: pointer;
}

.stepper__circle {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-pill);
    background-color: var(--color-paper);
    border: 0.125rem solid var(--color-rule-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: var(--text-md);
    font-weight: 800;
    color: var(--color-ink);
    box-shadow: 0 0.125rem 0.375rem var(--color-shadow);
    transition: all var(--dur-short) var(--ease-out);
}

.stepper__step--active .stepper__circle {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: #ffffff !important;
    box-shadow: 0 0 0 0.25rem var(--color-accent-soft);
    font-size: var(--text-lg);
    font-weight: 800;
}

.stepper__step--completed .stepper__circle {
    border-color: var(--color-success);
    background-color: var(--color-success);
    color: #ffffff !important;
}

.stepper__step--error .stepper__circle {
    border-color: var(--color-error);
    background-color: var(--color-error-soft);
    color: var(--color-error) !important;
    box-shadow: 0 0 0 0.25rem rgba(220, 38, 38, 0.2);
}

.stepper__label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-muted);
    text-align: center;
    max-width: 6.5rem;
    line-height: 1.25;
    transition: color var(--dur-short) var(--ease-out);
}

.stepper__step--active .stepper__label {
    color: var(--color-accent-strong);
    font-weight: 800;
}

.stepper__step--completed .stepper__label {
    color: var(--color-ink);
}

.stepper__step--error .stepper__label {
    color: var(--color-error);
    font-weight: 800;
}

/* --- Form Grids & Layout Alignment --- */
.form-step {
    animation: stepFadeIn var(--dur-short) var(--ease-out);
}

.form-step--hidden {
    display: none;
}

.form-section-title {
    font-family: var(--font-display);
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--color-ink);
    border-bottom: var(--rule-fine) solid var(--color-rule);
    padding-block-end: var(--space-2);
    margin-block-start: var(--space-6);
    margin-block-end: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.form-section-title:first-of-type {
    margin-block-start: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-block-end: var(--space-4);
    align-items: start;
}

@media (min-width: 640px) {
    .form-grid--2col {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .form-grid--3col {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.form-field--full {
    grid-column: 1 / -1;
}

/* Uniform Form Fields */
.form-field {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    margin-block-end: 0;
    min-width: 0;
}

.form-field label {
    display: flex;
    align-items: center;
    min-height: 1.625rem;
    margin-block-end: var(--space-2);
    color: var(--color-ink);
    font-size: var(--text-sm);
    font-weight: 700;
    line-height: 1.25;
}

.form-field__control {
    position: relative;
    width: 100%;
}

.form-field input,
.form-field select,
.form-select {
    width: 100%;
    height: var(--control-height);
    padding-inline: var(--space-3);
    border: var(--rule-fine) solid var(--color-rule-strong);
    border-radius: var(--radius-control);
    outline: var(--rule-focus) solid var(--color-transparent);
    outline-offset: 0.0625rem;
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: var(--text-base);
    box-sizing: border-box;
    transition: border-color var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out);
}

.form-field input[type="file"] {
    padding-block: 0.45rem;
    height: auto;
}

.form-field select,
.form-select {
    appearance: auto;
    cursor: pointer;
}

.form-field input:focus-visible,
.form-field select:focus-visible {
    border-color: var(--color-ink-2);
    outline-color: var(--color-focus);
}

.form-field input[type="password"] {
    padding-inline-end: 3rem;
}

/* Validation Error Styles */
.form-field input.input-validation-error,
.form-field select.input-validation-error {
    border-color: var(--color-error) !important;
    background-color: var(--color-error-soft) !important;
    color: var(--color-ink) !important;
    outline-color: var(--color-error) !important;
}

.form-field__error {
    display: none;
    color: var(--color-error);
    font-size: var(--text-xs);
    font-weight: 700;
    margin-block-start: var(--space-1);
    line-height: 1.3;
}

.form-field__error.field-validation-error,
.form-field__error:not(:empty) {
    display: block;
}

.form-step-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-block-start: var(--space-7);
    padding-block-start: var(--space-5);
    border-top: var(--rule-fine) solid var(--color-rule);
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* --- Dev Diagnostic Notice --- */
.dev-notice {
    background-color: var(--color-success-soft);
    border: var(--rule-fine) solid var(--color-success);
    border-radius: var(--radius-control);
    padding: var(--space-4);
    margin-block-end: var(--space-5);
    color: var(--color-success);
}

.dev-notice__title {
    font-weight: 700;
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-block-end: var(--space-2);
}

.dev-notice__code {
    font-family: var(--font-mono);
    font-size: 1.15em;
    font-weight: 700;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-control);
    border: var(--rule-fine) solid var(--color-success);
}

.dev-notice a {
    color: var(--color-accent-strong);
    text-decoration: underline;
    font-weight: 700;
    word-break: break-all;
}

@keyframes stepFadeIn {
    from {
        opacity: 0;
        transform: translateY(0.25rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}