/* Explain: Styles for the multi-step signup form, including account creation section styling. */
.signup-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.signup-head {
    position: relative;
    overflow: hidden;
    padding: 2.25rem 1.75rem;
    text-align: center;
    color: #fff;
    background-image: var(--gradient-brand);
}

.signup-head-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, .3);
    background: rgba(255, 255, 255, .14);
    color: #fff;
    font-size: 1.6rem;
}

.signup-head-title {
    margin-top: 1rem;
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
}

.signup-head-sub {
    margin-top: .35rem;
    font-size: .95rem;
    color: rgba(255, 255, 255, .8);
}

.signup-progress {
    display: flex;
    justify-content: center;
    gap: 1.75rem;
    margin: 0;
    padding: 1.6rem 1.25rem;
    list-style: none;
}

.signup-progress-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    background: var(--surface-alt);
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: .95rem;
    transition: background .3s ease, color .3s ease, transform .3s ease;
}

.signup-progress-item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 100%;
    width: 1.75rem;
    height: 2px;
    background: var(--border-color);
    transform: translateY(-50%);
}

.signup-progress-item.is-active {
    background: var(--primary-color);
    color: #fff;
    transform: scale(1.06);
}

.signup-progress-item.is-done {
    background: var(--secondary-color);
    color: #fff;
}

.signup-body {
    padding: 0 1.75rem 1.75rem;
}

.signup-step {
    padding-top: .25rem;
}

.signup-cost {
    display: flex;
    align-items: flex-start;
    gap: .6rem;
    margin-bottom: 1.5rem;
    padding: .85rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: .9rem;
}

.signup-cost strong { color: var(--primary-color); }

.signup-legend {
    margin-bottom: 1rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-color);
}

.signup-field { margin-bottom: 1.25rem; }

.signup-label {
    display: block;
    margin-bottom: .45rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: .85rem;
    color: var(--text-color);
}

.signup-hint {
    margin-top: .4rem;
    font-size: .78rem;
    color: var(--text-muted);
}

.signup-grid-2 {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .signup-grid-2 { grid-template-columns: 1fr 1fr; }
}

.signup-age-email {
    display: grid;
    gap: 1rem;
    grid-template-columns: 5rem 1fr;
}

@media (min-width: 640px) {
    .signup-age-email {
        grid-template-columns: 6rem 1fr;
    }
}

.signup-choice-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    margin-bottom: 1.5rem;
}

@media (min-width: 480px) {
    .signup-choice-grid { grid-template-columns: 1fr 1fr; }
}

.signup-choice {
    position: relative;
    display: block;
    overflow: hidden;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: #fff;
    cursor: pointer;
    transition: border-color .25s ease, box-shadow .25s ease;
}

.signup-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.signup-choice img {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 2;
    height: auto;
    object-fit: cover;
    object-position: center;
}

.signup-choice span {
    display: block;
    padding: .85rem .6rem;
    text-align: center;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: .85rem;
    color: var(--text-color);
}

.signup-choice::after {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    top: .55rem;
    right: .55rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 999px;
    background: #16a34a;
    color: #fff;
    font-size: .7rem;
    opacity: 0;
    transform: scale(.5);
    transition: opacity .25s ease, transform .25s ease;
}

.signup-choice:hover { border-color: var(--secondary-color); }

.signup-choice:has(input:checked) {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(12, 129, 176, .16);
}

.signup-choice:has(input:checked)::after {
    opacity: 1;
    transform: scale(1);
}

.signup-policy {
    margin-bottom: 1.5rem;
    padding: .9rem 1rem;
    border-left: 3px solid var(--secondary-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: var(--surface-color);
    font-size: .85rem;
    color: var(--text-muted);
}

.bank-card {
    margin-bottom: 1.25rem;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
}

.bank-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary-color);
}

.bank-cost {
    margin-top: .5rem;
    font-size: .85rem;
    color: var(--text-muted);
}

.bank-subtitle {
    margin-top: 1rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: .8rem;
    color: var(--text-color);
}

.bank-list { margin-top: .5rem; }

.bank-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: .45rem 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: .85rem;
}

.bank-row:last-child { border-bottom: 0; }
.bank-row dt { color: var(--text-muted); }
.bank-row dd { font-weight: 600; text-align: right; color: var(--text-color); }

.ks-file {
    width: 100%;
    padding: .9rem 1rem;
    border: 1.5px dashed var(--border-color);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: .85rem;
    cursor: pointer;
    transition: border-color .25s ease;
}

.ks-file:hover { border-color: var(--secondary-color); }

.signup-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
}

.signup-nav .hidden { display: none !important; }

.signup-status {
    margin-top: 1rem;
    padding: .8rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .85rem;
}

.signup-status-ok {
    background: #effaf4;
    border: 1px solid #bfe3d3;
    color: #177a51;
}

.signup-status-err {
    background: #fdf1f1;
    border: 1px solid #f3c9c9;
    color: #b02525;
}

.signup-success {
    padding: 2.5rem 1.75rem;
    text-align: center;
}

.signup-success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 999px;
    background: #16a34a;
    color: #fff;
    font-size: 1.6rem;
}

.ks-phone-row {
    display: flex;
    align-items: stretch;
    gap: .6rem;
}

.ks-phone-code {
    flex: 0 0 auto;
    width: 5.5rem;
}

@media (min-width: 640px) {
    .ks-phone-code {
        width: 7.5rem;
    }
}

.ks-phone-number {
    flex: 1 1 auto;
    min-width: 0;
}

@media (max-width: 639px) {
    .signup-head {
        padding: 1.5rem 1.25rem;
    }
    .signup-head-badge {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
    .signup-head-title {
        font-size: 1.6rem;
    }
    .signup-progress {
        padding: 1.25rem 1rem;
        gap: 1rem;
    }
    .signup-progress-item {
        width: 34px;
        height: 34px;
        font-size: .85rem;
    }
    .signup-progress-item:not(:last-child)::after {
        width: 1rem;
    }
    .signup-body {
        padding: 0 1.25rem 1.5rem;
    }
    .signup-nav {
        flex-direction: column-reverse;
        gap: .75rem;
    }
    .signup-nav .btn-ks {
        width: 100%;
        justify-content: center;
    }
    .bank-row {
        flex-direction: column;
        gap: 0.2rem;
    }
    .bank-row dd {
        text-align: left;
    }
}

.signup-note {
    margin-bottom: 1.25rem;
    color: var(--text-muted);
    font-size: .88rem;
}

.signup-family {
    margin-top: 1.5rem;
}

.signup-account {
    margin-top: 1.75rem;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
}

.signup-account-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: .95rem;
    color: var(--primary-color);
}

.signup-account-note {
    margin: .35rem 0 1.25rem;
    font-size: .82rem;
    color: var(--text-muted);
}

.signup-account .signup-field:last-child {
    margin-bottom: 0;
}

.signup-student {
    margin-bottom: 1.25rem;
    padding: 1.1rem;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
}

.signup-student--plain {
    padding: 0;
    border: 0;
    background: transparent;
}

.signup-student-title {
    margin-bottom: .75rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: .92rem;
    color: var(--primary-color);
}

.signup-req {
    color: #dc2626;
}

@media (max-width: 639px) {
    .signup-student {
        padding: .9rem;
    }
}

.signup-total {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--primary-light);
}

.signup-total-label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: .92rem;
    color: var(--primary-color);
}

.signup-total-hint {
    display: block;
    margin-top: .15rem;
    font-size: .78rem;
    color: var(--text-muted);
}

.signup-total-value {
    flex: 0 0 auto;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--primary-color);
    white-space: nowrap;
}

@media (max-width: 639px) {
    .signup-total {
        flex-direction: column;
        align-items: flex-start;
    }
}