:root {
    --idck-blue: #002c5a;
    --idck-link: #0071b3;
    --idck-link-hover: #3d748e;
    --idck-border: #d7e1ea;
    --idck-border-strong: #b7c9d9;
    --idck-panel: #f7fafc;
    --idck-panel-2: #ffffff;
    --idck-muted: #5f686f;
    --idck-danger: #b42318;
    --idck-success: #146c43;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: transparent;
    color: #333;
    font-family: "Open Sans", sans-serif;
    line-height: 1.6;
}

a {
    color: var(--idck-link);
    text-decoration: none;
}

a:hover,
a:focus {
    color: var(--idck-link-hover);
}

.page {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 8px 24px;
}

.hero {
    border: 1px solid var(--idck-border);
    background: linear-gradient(180deg, #fbfdff 0%, #f3f8fc 100%);
    padding: 20px 20px 18px;
    margin-bottom: 20px;
    border-radius: 18px;
}

.hero-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 10px;
}

.language-switch {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.language-switch a {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 12px;
    border: 1px solid rgba(0, 44, 90, 0.18);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    color: var(--idck-blue);
    font-size: 0.92rem;
    font-weight: 700;
}

.language-switch a.active {
    background: var(--idck-blue);
    border-color: var(--idck-blue);
    color: #fff;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--idck-link);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    margin: 0;
    color: var(--idck-blue);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(1.9rem, 5vw, 2.6rem);
    margin-bottom: 10px;
}

h2 {
    font-size: 1.16rem;
}

h3 {
    font-size: 1rem;
}

.hero-copy {
    max-width: 760px;
    color: var(--idck-muted);
    margin: 0 0 16px;
}

.logo-strip-title {
    margin: 16px 0 10px;
    color: var(--idck-blue);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.logo-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.logo-card {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 10px;
    min-height: 150px;
    border: 1px solid var(--idck-border);
    background: #fff;
    padding: 10px 14px;
    flex: 1 1 220px;
    border-radius: 14px;
    text-align: center;
}

.logo-visual {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    height: 72px;
    width: 100%;
}

.logo-card img {
    display: block;
    max-width: 100%;
    width: auto;
    height: 100%;
    max-height: none;
    object-fit: contain;
    object-position: top center;
}

.logo-meta,
.logo-card strong,
.logo-card span {
    display: block;
    width: 100%;
}

.logo-card strong {
    color: var(--idck-blue);
    font-size: 0.95rem;
    line-height: 1.25;
    margin-bottom: 4px;
}

.logo-card span {
    color: var(--idck-muted);
    font-size: 0.86rem;
    line-height: 1.35;
}

.notice,
.success {
    margin-bottom: 18px;
    padding: 14px 16px;
    border: 1px solid var(--idck-border);
    background: #fff;
    border-radius: 14px;
}

.notice {
    color: var(--idck-danger);
}

.success {
    color: var(--idck-success);
}

.required-note {
    margin-bottom: 16px;
    color: var(--idck-muted);
    font-size: 0.93rem;
}

.group {
    margin-bottom: 20px;
    border: 1px solid var(--idck-border);
    background: var(--idck-panel);
    padding: 18px;
    border-radius: 16px;
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--idck-border);
}

.price-badge {
    color: var(--idck-link);
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.subsection {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--idck-border);
}

.field {
    margin-bottom: 16px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: var(--idck-blue);
    font-size: 0.95rem;
    font-weight: 700;
}

input[type="text"],
input[type="email"],
select,
textarea {
    display: block;
    width: 100%;
    border: 1px solid var(--idck-border-strong);
    background: #fff;
    color: #333;
    font: inherit;
    padding: 13px 14px;
    outline: none;
    border-radius: 10px;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--idck-link);
}

.choice-list,
.person-list,
.payment-details {
    display: block;
}

.choice-row {
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--idck-border);
    background: #fff;
    padding: 12px 14px;
    margin-bottom: 10px;
    border-radius: 12px;
}

.choice-row:last-child,
.person-card:last-child {
    margin-bottom: 0;
}

.choice-row input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--idck-blue);
    flex: 0 0 auto;
}

.choice-row span {
    font-weight: 600;
}

.help-text {
    margin: 0 0 14px;
    color: var(--idck-muted);
    font-size: 0.92rem;
}

.error-text {
    margin-top: 7px;
    color: var(--idck-danger);
    font-size: 0.88rem;
}

.person-card {
    margin-bottom: 14px;
    border: 1px solid var(--idck-border);
    background: var(--idck-panel-2);
    padding: 16px;
    border-radius: 14px;
}

.person-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--idck-border);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.button-row-top {
    margin-top: 14px;
}

.button,
.button-secondary,
.button-danger {
    border: 1px solid var(--idck-blue);
    background: var(--idck-blue);
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    padding: 12px 16px;
    border-radius: 12px;
}

.button:hover,
.button:focus,
.button-secondary:hover,
.button-secondary:focus,
.button-danger:hover,
.button-danger:focus {
    background: #001f40;
    border-color: #001f40;
}

.button-secondary {
    background: #fff;
    color: var(--idck-blue);
}

.button-secondary:hover,
.button-secondary:focus {
    color: #fff;
}

.button-danger {
    background: #fff;
    border-color: #b42318;
    color: #b42318;
}

.button-danger:hover,
.button-danger:focus {
    background: #b42318;
    border-color: #b42318;
    color: #fff;
}

.button[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.payment-preview {
    display: grid;
    gap: 16px;
    grid-template-columns: minmax(0, 1fr) 220px;
    align-items: start;
}

.payment-line {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 0;
    border-bottom: 1px solid var(--idck-border);
}

.payment-line strong {
    color: var(--idck-blue);
}

.payment-qr {
    border: 1px solid var(--idck-border);
    background: #fff;
    padding: 10px;
    border-radius: 14px;
}

.payment-qr img {
    display: block;
    width: 100%;
    height: auto;
}

.payment-link {
    margin-top: 10px;
    font-size: 0.9rem;
    text-align: center;
}

.submit-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 18px;
    align-items: center;
    margin-top: 18px;
    padding: 16px 18px;
    border: 1px solid var(--idck-border);
    background: linear-gradient(180deg, #f5f9fc 0%, #eef5fa 100%);
    border-radius: 18px;
}

.turnstile-wrap {
    display: flex;
    align-items: center;
    min-height: 74px;
}

.submit-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 14px;
    align-items: center;
}

.total-box {
    min-width: 250px;
    border: 1px solid rgba(0, 44, 90, 0.1);
    background: #fff;
    padding: 12px 16px;
    border-radius: 14px;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.65);
}

.total-label {
    display: block;
    color: var(--idck-muted);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.total-value {
    display: block;
    color: var(--idck-blue);
    font-size: 1.45rem;
    font-weight: 700;
    line-height: 1.2;
    margin-top: 4px;
}

.submit-row .button {
    min-width: 210px;
    min-height: 56px;
    padding-inline: 22px;
    font-size: 1rem;
}

.hidden {
    display: none !important;
}

@media (max-width: 720px) {
    .hero-top,
    .group-header,
    .person-header,
    .payment-line {
        display: block;
    }

    .language-switch {
        justify-content: flex-start;
        margin-top: 6px;
    }

    .page {
        padding: 0 4px 20px;
    }

    .hero,
    .group,
    .person-card {
        padding: 14px;
    }

    .price-badge,
    .payment-line strong {
        margin-top: 4px;
    }

    .payment-preview {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .payment-qr {
        width: 100%;
        max-width: none;
        margin-top: 0;
    }

    .payment-qr img {
        max-width: 240px;
        margin: 0 auto;
    }

    .submit-row {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .turnstile-wrap,
    .submit-actions {
        width: 100%;
    }

    .turnstile-wrap {
        min-height: 0;
        justify-content: center;
    }

    .submit-actions {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 12px;
        margin-top: 0;
    }

    .total-box {
        min-width: 0;
        width: 100%;
        text-align: center;
    }

    .submit-row .button {
        width: 100%;
        min-width: 0;
    }
}

body.admin-page {
    background: #f4f7fb;
    color: #17324d;
}

.admin-page .page {
    max-width: none;
    width: 100%;
    padding: 18px 20px 24px;
}

.admin-page .panel {
    background: #fff;
    border: 1px solid var(--idck-border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 12px 30px rgba(19, 44, 72, 0.08);
}

.admin-page p {
    color: var(--idck-muted);
}

.admin-page .toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
}

.admin-page .toolbar-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.admin-page .errors {
    margin-bottom: 18px;
    padding: 14px 16px;
    border: 1px solid #f3c0b7;
    border-radius: 12px;
    background: #fff2f0;
    color: var(--idck-danger);
}

.admin-page form {
    display: grid;
    gap: 16px;
    max-width: 420px;
}

.admin-page input[type="password"] {
    width: 100%;
    border: 1px solid var(--idck-border);
    background: #fff;
    color: #333;
    font: inherit;
    padding: 13px 14px;
    outline: none;
    border-radius: 10px;
}

.admin-page button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 16px;
    border: 0;
    border-radius: 999px;
    background: var(--idck-blue);
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.admin-page .layout {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.9fr);
    gap: 16px;
    align-items: start;
}

.admin-page .table-wrap {
    border: 1px solid var(--idck-border);
    border-radius: 16px;
    background: #fff;
    overflow: hidden;
}

.admin-page table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.admin-page th,
.admin-page td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--idck-border);
    vertical-align: top;
    text-align: left;
    font-size: 12px;
    line-height: 1.35;
}

.admin-page th {
    position: sticky;
    top: 0;
    background: #eef4fa;
    z-index: 1;
    font-size: 11px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.admin-page tbody tr.is-active {
    background: #f7fbff;
}

.admin-page tbody tr {
    cursor: pointer;
}

.admin-page td small,
.admin-page .muted {
    color: var(--idck-muted);
    font-size: 11px;
}

.admin-page .preview-cell {
    white-space: normal;
    line-height: 1.45;
}

.admin-page .admin-col-id {
    width: 4%;
}

.admin-page .admin-col-created {
    width: 14%;
}

.admin-page .admin-col-participant {
    width: 18%;
}

.admin-page .admin-col-mode {
    width: 8%;
}

.admin-page .admin-col-presentation {
    width: 8%;
}

.admin-page .admin-col-title {
    width: 14%;
}

.admin-page .admin-col-abstract {
    width: 22%;
}

.admin-page .admin-col-total {
    width: 5%;
}

.admin-page .admin-col-mail {
    width: 7%;
}

.admin-page .sidebar {
    position: sticky;
    top: 20px;
    border: 1px solid var(--idck-border);
    border-radius: 16px;
    background: #fff;
    overflow: hidden;
}

.admin-page .sidebar-header {
    padding: 18px 20px 12px;
    border-bottom: 1px solid var(--idck-border);
    background: #f9fbfe;
}

.admin-page .sidebar-header h2 {
    margin: 0 0 6px;
    font-size: 22px;
}

.admin-page .sidebar-body {
    padding: 18px 20px 20px;
    display: grid;
    gap: 16px;
}

.admin-page .detail-grid {
    display: grid;
    gap: 12px;
}

.admin-page .detail-block {
    display: grid;
    gap: 4px;
}

.admin-page .detail-label {
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--idck-muted);
}

.admin-page .detail-value {
    white-space: pre-wrap;
    line-height: 1.55;
    word-break: break-word;
}

.admin-page .empty-sidebar {
    color: var(--idck-muted);
}

@media (max-width: 1200px) {
    .admin-page .layout {
        grid-template-columns: 1fr;
    }

    .admin-page .sidebar {
        position: static;
    }
}

@media (max-width: 720px) {
    .admin-page .page {
        padding: 12px 8px 20px;
    }

    .admin-page .panel {
        padding: 14px;
    }

    .admin-page .toolbar {
        display: block;
    }

    .admin-page .toolbar-links {
        margin-top: 12px;
    }

    .admin-page th,
    .admin-page td {
        padding: 7px 8px;
        font-size: 11px;
    }
}