/* Online-Terminbuchung – zwei Bereiche:
   1. .tb-overlay & Co.: Kalender-Pop-up auf der Startseite (index.html).
   2. .terminbuchung-seite: Buchungsformular-Seite (html/terminbuchung.html),
      Tokens und Formular-Styles entsprechen css/kontakt.css. */

/* =========================================================
   1. Terminbuchungs-Pop-up (Kalender) auf der Startseite
   ========================================================= */

.tb-overlay {
    --background-panel: #152027;
    --text-primary: #ffffff;
    --text-muted: #9ba7aa;
    --accent: #4597A3;
    --border: rgba(234, 8, 8, 0.1);
    --font-display: "Sora", sans-serif;
    --font-body: "DM Sans", Arial, Helvetica, sans-serif;
    --radius: 1.1rem;

    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgb(7 20 25 / 72%);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.tb-overlay[hidden] {
    display: none;
}

.tb-dialog {
    position: relative;
    width: min(560px, 100%);
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    background-color: var(--background-panel);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: calc(var(--radius) + 0.4rem);
    box-shadow: 0 30px 90px rgb(0 0 0 / 45%);
    padding: 28px;
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
}

.tb-close {
    position: absolute;
    top: 14px;
    right: 14px;
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgb(255 255 255 / 4%);
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.tb-close:hover,
.tb-close:focus-visible {
    border-color: var(--accent);
    background: rgb(69 151 163 / 14%);
}

.tb-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

.tb-kicker::before {
    content: "";
    width: 24px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.tb-title {
    margin: 0 0 6px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.tb-subtitle {
    margin: 0 0 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ---------- Trainer-Auswahl ---------- */

.tb-trainer-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.tb-trainer {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.tb-trainer-btn {
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgb(255 255 255 / 4%);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.tb-trainer-btn:hover {
    border-color: var(--accent);
}

.tb-trainer-btn.is-active {
    border-color: var(--accent);
    background: rgb(69 151 163 / 18%);
}

/* ---------- Kalender ---------- */

.tb-cal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.tb-cal-month {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
}

.tb-cal-nav {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgb(255 255 255 / 4%);
    color: var(--text-primary);
    font-size: 1.05rem;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.tb-cal-nav:hover:not(:disabled) {
    border-color: var(--accent);
    background: rgb(69 151 163 / 14%);
}

.tb-cal-nav:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.tb-cal-weekdays,
.tb-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 6px;
}

.tb-cal-weekdays span {
    text-align: center;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding-bottom: 4px;
}

.tb-day {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 44px;
    border-radius: 10px;
    border: 1px solid transparent;
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.88rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

/* Leere Zellen vor dem ersten bzw. nach dem letzten Tag des Monats */
.tb-day--leer {
    visibility: hidden;
    pointer-events: none;
}

/* Verfügbarkeitskategorien */
.tb-day--verfuegbar {
    background: rgb(34 197 94 / 12%);
    border-color: rgb(34 197 94 / 40%);
}

.tb-day--verfuegbar:hover,
.tb-day--verfuegbar:focus-visible {
    background: rgb(34 197 94 / 22%);
    border-color: rgb(34 197 94 / 70%);
}

.tb-day--nicht {
    color: rgb(255 255 255 / 26%);
    background: rgb(255 255 255 / 3%);
    cursor: default;
}

/* Heute: dezent markiert, ohne die Kategorie zu verdecken */
.tb-day--heute {
    font-weight: 700;
    box-shadow: inset 0 -2px 0 0 var(--accent);
}

/* Ausgewählter Tag */
.tb-day--ausgewaehlt {
    background: var(--accent);
    border-color: var(--accent);
    color: #03242b;
    font-weight: 700;
}

/* ---------- Legende ---------- */

.tb-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    list-style: none;
    margin: 14px 0 0;
    padding: 0;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.tb-legend li {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.tb-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.tb-dot--verfuegbar {
    background: #22c55e;
}

.tb-dot--nicht {
    background: rgb(255 255 255 / 22%);
}

/* ---------- Uhrzeiten des gewählten Tages ---------- */

.tb-times {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.tb-times-label {
    margin: 0 0 12px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.tb-times-label strong {
    color: var(--text-primary);
}

.tb-time-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tb-time-chip {
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgb(255 255 255 / 4%);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.tb-time-chip:hover {
    border-color: var(--accent);
}

.tb-time-chip.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: #03242b;
}

/* ---------- Buchen-Button ---------- */

.tb-book {
    display: block;
    width: 100%;
    margin-top: 22px;
    padding: 0.85rem 1.5rem;
    border-radius: 999px;
    border: none;
    background: var(--accent);
    color: #03242b;
    font-family: var(--font-body);
    font-size: 0.98rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.tb-book:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgb(0 179 194 / 28%);
}

.tb-book:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tb-hinweis {
    margin: 12px 0 0;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* =========================================================
   2. Buchungsformular-Seite (html/terminbuchung.html)
   ========================================================= */

.terminbuchung-seite {
    /* Farben – Tokens von tri-hub.de (wie css/kontakt.css) */
    --background: #0714198a;
    --background-rgb: 7 20 25;
    --background-panel: #152027;
    --text-primary: #ffffff;
    --text-muted: #9ba7aa;
    --accent: #4597A3;
    --accent-warm: #f7c230;
    --border: rgba(234, 8, 8, 0.1);

    /* Typografie */
    --font-display: "Sora", sans-serif;
    --font-body: "DM Sans", Arial, Helvetica, sans-serif;

    /* Layout */
    --container: 1120px;
    --radius: 1.1rem;
}

/* ---------- Basic ---------- */

.terminbuchung-seite,
.terminbuchung-seite *,
.terminbuchung-seite::before,
.terminbuchung-seite *::before,
.terminbuchung-seite::after,
.terminbuchung-seite *::after {
    box-sizing: border-box;
}

.terminbuchung-seite {
    min-height: 100vh;
    margin: 0;
    background-color: var(--background);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
    position: relative;
    isolation: isolate;
    scroll-behavior: smooth;
}

/* Licht */
.terminbuchung-seite::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(900px 520px at 78% -10%, rgb(0 179 194 / 13%), transparent 65%),
        radial-gradient(700px 480px at -10% 30%, rgb(35 137 148 / 10%), transparent 60%),
        radial-gradient(600px 420px at 90% 95%, rgb(247 194 48 / 5%), transparent 60%);
    pointer-events: none;
}

.terminbuchung-seite h1,
.terminbuchung-seite h2,
.terminbuchung-seite h3 {
    margin-top: 0;
    font-family: var(--font-display);
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.terminbuchung-seite p {
    margin: 0 0 1em;
}

.terminbuchung-seite .container {
    width: min(100% - 48px, var(--container));
    margin-inline: auto;
}

/* ---------- Typo-Helfer ---------- */

.terminbuchung-seite .kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 18px;
}

.terminbuchung-seite .kicker::before {
    content: "";
    width: 28px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.terminbuchung-seite .lead {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 660px;
}

/* Die Navigationsleiste oben wird von css/navigation.css gestylt (.site-navigation). */

/* ---------- Kopfzeile / Hero ---------- */

.terminbuchung-seite .hero {
    padding: 72px 0 56px;
}

.terminbuchung-seite .hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.terminbuchung-seite .hero__text {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 640px;
}

/* ---------- Sektionen ---------- */

.terminbuchung-seite .section {
    padding: 56px 0 88px;
}

.terminbuchung-seite .section + .section {
    border-top: 1px solid var(--border);
}

.terminbuchung-seite .section h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    margin-bottom: 16px;
}

/* ---------- Termin-Zusammenfassung ---------- */

.tb-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 32px;
}

.tb-summary__item {
    background-color: var(--background-panel);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 0.4rem);
    padding: 22px;
}

.tb-summary__label {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.tb-summary__value {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* Hinweis, wenn die Seite ohne Termin-Parameter geöffnet wurde */
.tb-summary--fehlend {
    grid-template-columns: minmax(0, 1fr);
}

.tb-summary--fehlend .tb-summary__item {
    border-color: rgb(247 194 48 / 45%);
    background: rgb(247 194 48 / 6%);
}

.tb-summary--fehlend a {
    color: var(--accent);
}

/* ---------- Formular ---------- */

.terminbuchung-seite form {
    margin-top: 32px;
    display: grid;
    gap: 20px;
}

.terminbuchung-seite .field label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.terminbuchung-seite .field input,
.terminbuchung-seite .field select,
.terminbuchung-seite .field textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgb(255 255 255 / 4%);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.terminbuchung-seite .field input::placeholder,
.terminbuchung-seite .field textarea::placeholder {
    color: rgb(255 255 255 / 40%);
}

.terminbuchung-seite .field input:focus,
.terminbuchung-seite .field select:focus,
.terminbuchung-seite .field textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgb(255 255 255 / 6%);
}

.terminbuchung-seite .field select option {
    background: #0b1a20;
    color: var(--text-primary);
}

.terminbuchung-seite .field textarea {
    min-height: 110px;
    resize: vertical;
}

/* terminbuchung-form.js setzt die Zustandsklassen für ungültige Felder und Rückmeldungen. */
.terminbuchung-seite .field input.invalid,
.terminbuchung-seite .field select.invalid,
.terminbuchung-seite .field textarea.invalid {
    border-color: #ef4444;
}

.terminbuchung-seite .field input.valid,
.terminbuchung-seite .field textarea.valid {
    border-color: #22c55e;
}

.terminbuchung-seite .field__error {
    display: none;
    margin-top: 6px;
    font-size: 0.8rem;
    color: #f87171;
}

.terminbuchung-seite .field__hint {
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminbuchung-seite .field.has-error .field__error {
    display: block;
}

/* ---------- Anamnese-Tags (Allergien & Unverträglichkeiten) ---------- */

.tb-tag-row {
    display: flex;
    gap: 10px;
}

.tb-tag-row input {
    flex: 1;
}

.tb-tag-add {
    flex-shrink: 0;
    padding: 0 18px;
    border-radius: 10px;
    border: 1px solid var(--accent);
    background: rgb(69 151 163 / 14%);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.tb-tag-add:hover {
    background: rgb(69 151 163 / 28%);
}

.tb-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 10px 0 0;
    padding: 0;
}

.tb-tags:empty {
    display: none;
}

.tb-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgb(69 151 163 / 16%);
    border: 1px solid rgb(69 151 163 / 45%);
    font-size: 0.85rem;
    color: var(--text-primary);
}

.tb-tag button {
    display: grid;
    place-items: center;
    width: 18px;
    height: 18px;
    border: none;
    border-radius: 50%;
    background: rgb(255 255 255 / 12%);
    color: var(--text-primary);
    font-size: 0.7rem;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.tb-tag button:hover {
    background: rgb(239 68 68 / 60%);
}

/* ---------- Button ---------- */

.terminbuchung-seite .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 999px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.2;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease,
        background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.terminbuchung-seite .btn-accent {
    background: var(--accent);
    color: #03242b;
}

.terminbuchung-seite .btn-accent:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgb(0 179 194 / 28%);
}

.terminbuchung-seite .btn-block {
    width: 100%;
}

.terminbuchung-seite .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.terminbuchung-seite .form-status {
    display: none;
    font-size: 0.9rem;
}

.terminbuchung-seite .form-status.is-visible {
    display: block;
}

.terminbuchung-seite .form-status--ok {
    color: #4ade80;
}

.terminbuchung-seite .form-status--error {
    color: #f87171;
}

/* ---------- Footer ---------- */

.terminbuchung-seite .logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--text-muted);
    text-decoration: none;
    white-space: nowrap;
}

.terminbuchung-seite .logo span {
    color: var(--accent);
}

.terminbuchung-seite .site-footer {
    margin-top: 0;
    padding: 64px 0 40px;
    border-top: 1px solid var(--border);
    background: rgb(255 255 255 / 1.5%);
}

.terminbuchung-seite .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
}

.terminbuchung-seite .footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 340px;
    margin-top: 14px;
}

.terminbuchung-seite .footer-col h3 {
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.terminbuchung-seite .footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.terminbuchung-seite .footer-col a {
    display: block;
    padding: 5px 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.15s ease;
}

.terminbuchung-seite .footer-col a:hover {
    color: var(--text-primary);
}

.terminbuchung-seite .footer-legal {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.terminbuchung-seite .footer-legal a {
    color: inherit;
    text-decoration: none;
}

.terminbuchung-seite .footer-legal a:hover {
    color: var(--text-primary);
}

/* ---------- Scroll-Reveal ---------- */

.terminbuchung-seite .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.terminbuchung-seite .reveal.visible {
    opacity: 1;
    transform: none;
}

/* ---------- Responsiv ---------- */

@media (max-width: 980px) {
    .terminbuchung-seite .tb-summary {
        grid-template-columns: minmax(0, 1fr);
    }

    .terminbuchung-seite .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 760px) {
    .terminbuchung-seite .section {
        padding: 48px 0 64px;
    }

    .terminbuchung-seite .hero {
        padding: 56px 0 48px;
    }

    .terminbuchung-seite .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* Pop-up auf schmalen Bildschirmen */
@media (max-width: 560px) {
    .tb-overlay {
        padding: 12px;
        align-items: stretch;
    }

    .tb-dialog {
        max-height: calc(100vh - 24px);
        padding: 22px 18px;
    }

    .tb-day {
        min-height: 38px;
        font-size: 0.8rem;
    }
}

/* ---------- Reduzierte Bewegung ---------- */

@media (prefers-reduced-motion: reduce) {
    .terminbuchung-seite {
        scroll-behavior: auto;
    }

    .terminbuchung-seite .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .terminbuchung-seite,
    .terminbuchung-seite *,
    .tb-overlay,
    .tb-overlay * {
        transition-duration: 0.01ms !important;
    }
}