/* Öffentliches Anmeldeformular + Bestätigungs-/Fehler-Seite. Ref #635.
   Konsolidiert aus handoff-buchung/mockups/{01,02,03}.html. Kein Tailwind,
   kein Flowbite, keine app.css-Abhängigkeit. */

:root {
    --primary: #2C2B80;
    --primary-700: #23226a;
    --primary-50: #f4f4fb;
    --primary-100: #e6e6f4;
    --accent: #FF433E;
    --accent-700: #e4332e;
    --accent-50: #fef3f2;
    --accent-200: #fecaca;
    --accent-700-text: #b91c1c;
    --ink: #0f172a;
    --muted: #64748b;
    --muted-2: #94a3b8;
    --line: #E5E7EB;
    --line-strong: #D1D5DB;
    --line-2: #eef0f3;
    --surface-2: #F8FAFC;
    --free: #0F766E;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1100px 500px at 10% -10%, #eef1f8 0%, transparent 60%),
        radial-gradient(900px 400px at 110% 0%, #fef3f2 0%, transparent 55%),
        #ffffff;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }
a:hover { color: var(--primary-700); }

.hidden { display: none !important; }

.honeypot {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.stage {
    max-width: 1280px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

/* Layout: B1/B2 Form + Sticky Summary, B3/Fehler Single-Card */
.layout {
    width: 1080px;
    max-width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 24px;
    align-items: start;
}
.layout--single {
    width: 680px;
    max-width: 100%;
    margin: 0 auto;
    display: block;
}

.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    padding: 28px 32px;
}
.layout--single .card { padding: 36px 40px; }

/* Step-Indicator */
.steps {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    color: var(--muted);
    font: 600 12px/1 "Source Sans 3", sans-serif;
    text-transform: uppercase;
    letter-spacing: .06em;
}
.steps .step {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.steps .step .num {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--line-2);
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font: 700 12px/1 "Source Sans 3", sans-serif;
}
.steps .step.is-active .num { background: var(--primary); color: #fff; }
.steps .step.is-active { color: var(--ink); }
.steps .step.is-done .num { background: var(--primary-100); color: var(--primary); }
.steps .step.is-done { color: var(--ink); }
.steps .sep {
    flex: 0 0 24px;
    height: 1px;
    background: var(--line);
}

/* Form-Head */
.form-head .kicker {
    color: var(--muted);
    font: 400 13px/1 "Source Sans 3", sans-serif;
    margin-bottom: 6px;
}
.form-head h2 {
    color: var(--primary);
    font: 700 26px/1.2 "Source Sans 3", sans-serif;
    margin: 0 0 16px;
    letter-spacing: -.01em;
}

/* Termin-Header + Preis-Block (read-only) */
.head-meta {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px 24px;
    align-items: start;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 22px;
}
.head-meta .label {
    color: var(--muted);
    font: 400 13px/1 "Source Sans 3", sans-serif;
    margin-bottom: 6px;
}
.terms-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.term-row {
    display: grid;
    grid-template-columns: 22px 1fr;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--primary);
    border-radius: 8px;
    background: var(--primary-50);
}
.term-row .pin {
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.term-row .term-date {
    font: 600 14px/1.3 "Source Sans 3", sans-serif;
    color: var(--primary);
}
.term-row .term-meta {
    color: var(--muted);
    font: 400 13px/1.4 "Source Sans 3", sans-serif;
    margin-top: 2px;
}

.price-block {
    text-align: right;
    min-width: 180px;
}
.price-block .label { margin-bottom: 6px; }
.price-block .v {
    font: 700 22px/1.1 "Source Sans 3", sans-serif;
    color: var(--ink);
}
.price-block .sub {
    color: var(--muted);
    font: 400 12px/1.3 "Source Sans 3", sans-serif;
    margin-top: 2px;
}

/* Segmented Switch Privat/Firma */
.toggle-group { margin-bottom: 22px; }
.toggle-label {
    font: 700 14px/1 "Source Sans 3", sans-serif;
    color: var(--ink);
    display: block;
    margin-bottom: 10px;
}
.seg {
    display: inline-grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
}
.seg-option {
    margin: 0;
    padding: 0 22px;
    height: 44px;
    font: 600 14px/1 "Source Sans 3", sans-serif;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    cursor: pointer;
    transition: background .15s, color .15s;
    user-select: none;
    background: transparent;
}
.seg-option + .seg-option { border-left: 1px solid var(--line-strong); }
.seg-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 1px;
    height: 1px;
}
.seg-option.is-on { background: var(--primary); color: #fff; }
.seg-option:not(.is-on):hover { background: var(--surface-2); }
.seg-option svg { flex: 0 0 auto; }
/* Fallback für moderne Browser falls JS nicht gleich rendert. */
.seg-option:has(input:checked) { background: var(--primary); color: #fff; }

/* Sektionen */
.section { margin-top: 28px; }
.section + .section { margin-top: 32px; }
.section h3 {
    font: 700 18px/1.2 "Source Sans 3", sans-serif;
    color: var(--ink);
    margin: 0 0 4px;
    letter-spacing: -.005em;
}
.section .section-sub {
    color: var(--muted);
    font: 400 13px/1.4 "Source Sans 3", sans-serif;
    margin: 0 0 14px;
}
.section h3 + .grid-2,
.section h3 + .grid-3,
.section h3 + .tn-card,
.section h3 + .tn-add,
.section h3 + .field { margin-top: 14px; }

/* Field-Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 16px;
}
.col-span-2 { grid-column: 1 / -1; }

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.field label {
    font: 600 13px/1 "Source Sans 3", sans-serif;
    color: #374151;
}
.field label .req {
    color: var(--primary);
    margin-left: 2px;
}
.field input,
.field select {
    height: 42px;
    padding: 0 12px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
    font: 400 14px/1.2 "Source Sans 3", sans-serif;
    color: var(--ink);
    transition: border-color .15s, box-shadow .15s;
    width: 100%;
}
.field input::placeholder { color: var(--muted-2); }
.field input:focus,
.field select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 43, 128, .18);
}
.field .hint {
    color: var(--muted);
    font: 400 12px/1.4 "Source Sans 3", sans-serif;
}
.field select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Inline-Checkbox-Zeile (abweichende Rechnungsadresse) */
.inline-cb {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    color: #374151;
    font: 400 14px/1 "Source Sans 3", sans-serif;
    margin-top: 12px;
}
.inline-cb input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    margin: 0;
}

/* Inset (Rechnungsadresse) */
.inset {
    margin-top: 14px;
    border: 1px dashed var(--line-strong);
    border-radius: 10px;
    padding: 16px 18px 4px;
    background: #fff;
}
.inset .inset-title {
    font: 600 13px/1 "Source Sans 3", sans-serif;
    color: var(--ink);
    margin: 0 0 12px;
}

/* Teilnehmer-Cards (Firma) */
.tn-card {
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px 20px 16px;
}
.tn-card + .tn-card { margin-top: 12px; }
.tn-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.tn-head .name {
    font: 700 14px/1 "Source Sans 3", sans-serif;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.tn-head .name .num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font: 700 12px/1 "Source Sans 3", sans-serif;
}
.tn-remove {
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--muted);
    font: 600 13px/1 "Source Sans 3", sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 6px;
    border-radius: 6px;
}
.tn-remove:hover { color: var(--primary); background: rgba(44, 43, 128, .06); }
.tn-add {
    margin-top: 14px;
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--primary);
    font: 600 14px/1 "Source Sans 3", sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 4px;
}
.tn-add:hover { color: var(--primary-700); }

/* Consents */
.consents {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}
.consent {
    display: grid;
    grid-template-columns: 22px 1fr;
    gap: 10px;
    align-items: start;
    cursor: pointer;
    user-select: none;
    color: #374151;
    font: 400 13px/1.55 "Source Sans 3", sans-serif;
}
.consent input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary);
}
.consent a {
    color: var(--primary);
    text-decoration: underline;
}

/* Footer / Submit */
.form-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-top: 26px;
    margin-top: 26px;
    border-top: 1px solid var(--line);
    flex-wrap: wrap;
}
.btn-primary {
    height: 46px;
    padding: 0 22px;
    border: 0;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font: 700 15px/1 "Source Sans 3", sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: background .15s, transform .05s;
    text-decoration: none;
}
.btn-primary:hover { background: var(--primary-700); color: #fff; }
.btn-primary:active { transform: translateY(1px); }
.btn-primary--accent {
    background: var(--accent);
    box-shadow: 0 1px 2px rgba(255, 67, 62, .25);
    height: 48px;
    padding: 0 24px;
}
.btn-primary--accent:hover { background: var(--accent-700); }
.btn-secondary {
    height: 42px;
    padding: 0 16px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
    color: var(--ink);
    font: 600 14px/1 "Source Sans 3", sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    text-decoration: none;
}
.btn-secondary:hover { background: var(--surface-2); }

/* Submit-Button im Loading-State (Doppel-Klick-Schutz, Ref #636). */
.is-loading {
    opacity: 0.7;
    cursor: wait;
}

/* Hint-Text im Fehler-Zustand (Ref #637): rot + fett, ersetzt Browser-alert(). */
.hint--error {
    color: var(--accent-700-text);
    font-weight: 600;
}

/* Fehler-Box (Validation) */
.alert {
    margin-bottom: 22px;
    padding: 14px 16px;
    border-radius: 10px;
    background: var(--accent-50);
    border: 1px solid var(--accent-200);
    color: var(--accent-700-text);
    font: 400 14px/1.5 "Source Sans 3", sans-serif;
}
.alert .alert-title {
    font-weight: 600;
    margin: 0 0 6px;
}
.alert ul {
    margin: 0;
    padding-left: 20px;
}

/* Sticky Summary (rechts auf B1/B2) */
.summary {
    position: sticky;
    top: 24px;
}
.summary h3 {
    font: 700 14px/1 "Source Sans 3", sans-serif;
    color: var(--primary);
    background: var(--primary-50);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    margin: 0 0 16px;
}
.sum-title {
    font: 700 18px/1.25 "Source Sans 3", sans-serif;
    color: var(--ink);
    margin: 0 0 16px;
}
.sum-line {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 8px 0;
    color: #374151;
    font: 400 14px/1.4 "Source Sans 3", sans-serif;
    border-top: 1px dashed var(--line);
}
.sum-line:first-of-type { border-top: 0; }
.sum-line .k { color: var(--muted); }
.sum-line .v {
    color: var(--ink);
    font-weight: 600;
    text-align: right;
}
.sum-total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-top: 14px;
    margin-top: 10px;
    border-top: 1px solid var(--line);
}
.sum-total .k {
    color: var(--muted);
    font: 400 13px/1 "Source Sans 3", sans-serif;
}
.sum-total .v {
    color: var(--primary);
    font: 700 22px/1.1 "Source Sans 3", sans-serif;
}
.sum-hint {
    color: var(--muted);
    font: 400 13px/1.5 "Source Sans 3", sans-serif;
    background: var(--surface-2);
    border: 1px dashed var(--line);
    border-radius: 8px;
    padding: 14px;
    margin-top: 14px;
}

/* B3 Bestätigungs-Card */
.kicker-lg {
    color: var(--muted);
    font: 400 14px/1 "Source Sans 3", sans-serif;
    margin-bottom: 8px;
}
h2.title {
    color: var(--primary);
    font: 700 30px/1.2 "Source Sans 3", sans-serif;
    margin: 0 0 22px;
    letter-spacing: -.01em;
}
.mailblock { margin-bottom: 18px; }
.mailblock .lead {
    color: #374151;
    font: 400 15px/1.45 "Source Sans 3", sans-serif;
    margin: 0 0 4px;
}
.mailblock .mail {
    color: var(--ink);
    font: 700 17px/1.3 "Source Sans 3", sans-serif;
    word-break: break-all;
}
.b3-summary {
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px 20px;
    margin-bottom: 22px;
}
.b3-summary .row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 6px 14px;
    padding: 8px 0;
    color: #374151;
    font: 400 14px/1.45 "Source Sans 3", sans-serif;
    border-top: 1px dashed var(--line);
    align-items: start;
}
.b3-summary .row:first-of-type { border-top: 0; }
.b3-summary .row .k { color: var(--muted); }
.b3-summary .row .v {
    color: var(--ink);
    font-weight: 600;
}
.b3-summary .terms {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.b3-summary .term-line {
    color: var(--ink);
    font: 600 14px/1.4 "Source Sans 3", sans-serif;
}
.b3-summary .term-line .meta {
    color: var(--muted);
    font-weight: 400;
    margin-left: 4px;
}
.b3-summary .total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
}
.b3-summary .total .k {
    color: var(--muted);
    font: 400 13px/1 "Source Sans 3", sans-serif;
}
.b3-summary .total .v {
    color: var(--primary);
    font: 700 22px/1.1 "Source Sans 3", sans-serif;
}
.b3-summary .hint {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font: 400 13px/1.5 "Source Sans 3", sans-serif;
}

.notice {
    display: grid;
    grid-template-columns: 22px 1fr;
    gap: 12px;
    align-items: start;
    background: var(--primary-50);
    border: 1px solid var(--primary-100);
    border-radius: 10px;
    padding: 14px 16px;
    color: #374151;
    font: 400 14px/1.5 "Source Sans 3", sans-serif;
    margin-bottom: 24px;
}
.notice svg {
    color: var(--primary);
    margin-top: 1px;
}
.notice em {
    color: var(--ink);
    font-style: normal;
    font-weight: 600;
}

.b3-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}
.back-link-form {
    margin: 0;
    padding: 0;
    background: none;
    border: 0;
}
.back-link {
    color: #374151;
    font: 600 14px/1 "Source Sans 3", sans-serif;
    text-decoration: underline;
    text-underline-offset: 3px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    background: transparent;
    border: 0;
    padding: 6px 4px;
}
.back-link:hover { color: var(--primary); }

/* Fehler-Seite */
.fehler-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-50);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.fehler-icon svg { width: 28px; height: 28px; }

/* Mobile (<720px) */
@media (max-width: 720px) {
    .stage { padding: 20px 16px 60px; }
    .layout {
        width: 100%;
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .layout--single { width: 100%; }
    .card { padding: 22px 18px; }
    .layout--single .card { padding: 26px 22px; }
    .head-meta {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .price-block {
        text-align: left;
        min-width: 0;
    }
    .grid-2 { grid-template-columns: 1fr; }
    .seg { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
    .summary {
        position: static;
        top: auto;
    }
    .form-foot {
        flex-direction: column-reverse;
        align-items: stretch;
    }
    .btn-primary,
    .btn-secondary { justify-content: center; }
    .b3-summary .row {
        grid-template-columns: 1fr;
        gap: 2px;
    }
    h2.title { font-size: 24px; }
}