.join-page {
    min-height: 70vh;
    padding-bottom: 24px;
    background: #f5f7fa;
}

.join-page * {
    box-sizing: border-box;
}

/*
 * El projecte no té una regla .container global.
 * Contenim explícitament aquesta pàgina.
 */
.join-hero .container,
.join-container,
.join-success-wrap {
    width: 100%;
    max-width: 74rem;
    margin-right: auto;
    margin-left: auto;
    padding-right: 1.5rem;
    padding-left: 1.5rem;
}

.join-hero {
    padding: 18px 0 16px;
    background: var(--marifosc, #1b3a5c);
    color: #fff;
}

.join-hero h1 {
    margin: 1px 0 5px;
    font-size: clamp(1.55rem, 3vw, 2.05rem);
    line-height: 1.12;
}

.join-hero p {
    max-width: 880px;
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.5;
}

.join-eyebrow {
    margin: 0 0 2px;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.join-container {
    padding-top: 14px;
}

.join-form {
    display: grid;
    gap: 10px;
}

.join-section {
    padding: 12px 14px;
    border: 1px solid #d9e1e8;
    border-radius: 8px;
    background: #fff;
}

.join-section-heading {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid #e6eaef;
}

.join-section-heading > span {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 27px;
    height: 27px;
    border-radius: 5px;
    background: #edf3f8;
    color: var(--marifosc, #1b3a5c);
    font-size: 0.66rem;
    font-weight: 800;
}

.join-section-heading h2 {
    margin: 0 0 1px;
    color: var(--marifosc, #1b3a5c);
    font-size: 0.98rem;
    line-height: 1.25;
}

.join-section-heading p {
    margin: 0;
    color: #687587;
    font-size: 0.74rem;
    line-height: 1.35;
}

.join-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 12px;
    row-gap: 9px;
}

.join-field {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.join-field-wide {
    grid-column: 1 / -1;
}

.join-field label {
    color: #263f58;
    font-size: 0.76rem;
    font-weight: 700;
    line-height: 1.25;
}

.join-field input,
.join-field textarea {
    width: 100%;
    min-height: 36px;
    padding: 7px 9px;
    border: 1px solid #c8d1dc;
    border-radius: 5px;
    background: #fff;
    color: #17283b;
    font: inherit;
    font-size: 0.86rem;
    line-height: 1.35;
}

.join-field input[type="file"] {
    padding: 5px 7px;
    font-size: 0.78rem;
}

.join-field textarea {
    min-height: 76px;
    resize: vertical;
}

.join-field input:focus,
.join-field textarea:focus {
    border-color: var(--blaumig, #2c5282);
    outline: 2px solid rgba(44, 82, 130, 0.13);
}

.join-field input[data-uppercase] {
    text-transform: uppercase;
}

.join-field small {
    color: #6b7788;
    font-size: 0.69rem;
    line-height: 1.35;
}

.join-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: #334a62;
    font-size: 0.78rem;
    line-height: 1.4;
    cursor: pointer;
}

.join-check input {
    flex: 0 0 auto;
    width: 16px;
    height: 16px;
    margin-top: 1px;
}

.join-tutor-panel {
    margin-top: 9px;
    padding: 10px;
    border: 1px solid #dbe3eb;
    border-radius: 6px;
    background: #f7f9fb;
}

.join-minor-notice {
    margin: 8px 0 0;
    padding: 7px 9px;
    border-radius: 5px;
    background: #fff3cd;
    color: #6a4b00;
    font-size: 0.74rem;
    font-weight: 700;
}

.join-privacy {
    margin-top: 10px;
    padding: 9px 10px;
    border: 1px solid #dbe3eb;
    border-radius: 6px;
    background: #f5f7fa;
}

.join-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 1px;
}

.join-actions button,
.join-success a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border: 0;
    border-radius: 6px;
    background: var(--granate, #8b2332);
    color: #fff;
    font: inherit;
    font-size: 0.84rem;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
}

.join-actions button:hover,
.join-success a:hover {
    filter: brightness(1.06);
}

.join-alert {
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 0.78rem;
}

.join-alert-error {
    border: 1px solid #efb9bf;
    background: #fff0f1;
    color: #79202a;
}

.join-alert ul {
    margin: 5px 0 0;
    padding-left: 18px;
}

.join-honeypot {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.join-success-wrap {
    padding-top: 28px;
}

.join-success {
    max-width: 680px;
    margin: 0 auto;
    padding: 24px;
    border: 1px solid #d9e1e8;
    border-radius: 9px;
    background: #fff;
    text-align: center;
}

.join-success h1 {
    margin: 4px 0 8px;
    color: var(--marifosc, #1b3a5c);
    font-size: clamp(1.45rem, 3vw, 2rem);
    line-height: 1.18;
}

.join-success p {
    margin: 8px 0;
    color: #4e6074;
    font-size: 0.84rem;
    line-height: 1.55;
}

.join-success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 8px;
    border-radius: 50%;
    background: #e7f6eb;
    color: #19713a;
    font-size: 1.35rem;
    font-weight: 900;
}

/* Tres columnes en pantalles grans. */
@media (min-width: 1050px) {
    .join-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .join-field-wide {
        grid-column: span 2;
    }
}

@media (max-width: 720px) {
    .join-hero .container,
    .join-container,
    .join-success-wrap {
        padding-right: 1rem;
        padding-left: 1rem;
    }

    .join-hero {
        padding: 14px 0 13px;
    }

    .join-hero h1 {
        font-size: 1.45rem;
    }

    .join-hero p {
        font-size: 0.8rem;
    }

    .join-container {
        padding-top: 10px;
    }

    .join-grid {
        grid-template-columns: 1fr;
        row-gap: 8px;
    }

    .join-field-wide {
        grid-column: auto;
    }

    .join-section {
        padding: 11px;
    }

    .join-section-heading {
        margin-bottom: 8px;
    }

    .join-tutor-panel {
        padding: 9px;
    }

    .join-actions button {
        width: 100%;
    }

    .join-success {
        padding: 20px 15px;
    }
}