:root {
    --ltcal-bg: #ffffff;
    --ltcal-surface: #f7f7f8;
    --ltcal-ink: #18181b;
    --ltcal-muted: #66666f;
    --ltcal-line: #dfdfe3;
    --ltcal-accent: #111827;
    --ltcal-error: #b42318;
    --ltcal-success: #067647;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ltcal-ink);
    background: var(--ltcal-bg);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

.ltcal-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 32px;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--ltcal-line);
    backdrop-filter: blur(12px);
}

.ltcal-brand,
.ltcal-nav-link {
    color: var(--ltcal-ink);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.ltcal-nav-link {
    font-weight: 600;
}

.ltcal-page {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 48px 0 72px;
}

.ltcal-intro {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 380px);
    gap: 32px;
    align-items: end;
    margin-bottom: 32px;
}

.ltcal-kicker {
    margin: 0 0 10px;
    color: var(--ltcal-muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.ltcal-intro h1 {
    margin: 0;
    font-size: clamp(32px, 5vw, 48px);
    line-height: 1.08;
}

.ltcal-lead {
    max-width: 760px;
    margin: 16px 0 0;
    color: var(--ltcal-muted);
    font-size: 17px;
    line-height: 1.6;
}

.ltcal-timezone {
    padding: 18px;
    background: var(--ltcal-surface);
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
}

.ltcal-timezone span,
.ltcal-timezone strong {
    display: block;
}

.ltcal-timezone span {
    color: var(--ltcal-muted);
    font-size: 13px;
    line-height: 1.45;
}

.ltcal-timezone strong {
    margin-top: 6px;
    font-size: 16px;
}

.ltcal-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 28px;
    align-items: start;
}

.ltcal-slots-panel,
.ltcal-booking-panel {
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    background: #ffffff;
}

.ltcal-slots-panel {
    min-height: 360px;
}

.ltcal-panel-heading {
    display: flex;
    gap: 16px;
    align-items: start;
    justify-content: space-between;
    padding: 22px 22px 18px;
    border-bottom: 1px solid var(--ltcal-line);
}

.ltcal-panel-heading h2,
.ltcal-details h2 {
    margin: 0;
    font-size: 18px;
}

.ltcal-panel-heading p {
    margin: 6px 0 0;
    color: var(--ltcal-muted);
    font-size: 14px;
}

.ltcal-refresh {
    flex: 0 0 auto;
    min-height: 38px;
    padding: 0 14px;
    color: var(--ltcal-ink);
    background: #ffffff;
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
}

.ltcal-refresh:disabled,
.ltcal-primary:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.ltcal-alert {
    margin: 18px 22px 0;
    padding: 12px 14px;
    color: var(--ltcal-error);
    background: #fff4f2;
    border: 1px solid #fecdca;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
}

.ltcal-alert.is-success {
    color: var(--ltcal-success);
    background: #ecfdf3;
    border-color: #abefc6;
}

.ltcal-slots {
    padding: 22px;
}

.ltcal-day-picker {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
    gap: 10px;
    margin-bottom: 18px;
}

.ltcal-day-option {
    display: grid;
    gap: 4px;
    min-height: 62px;
    padding: 11px 12px;
    color: var(--ltcal-ink);
    text-align: left;
    background: #ffffff;
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
}

.ltcal-day-option:hover,
.ltcal-day-option.is-selected {
    border-color: var(--ltcal-accent);
}

.ltcal-day-option.is-selected {
    background: #f3f4f6;
}

.ltcal-day-label {
    font-size: 15px;
    font-weight: 700;
}

.ltcal-day-count {
    color: var(--ltcal-muted);
    font-size: 12px;
}

.ltcal-day + .ltcal-day {
    margin-top: 28px;
}

.ltcal-day h3 {
    margin: 0 0 12px;
    font-size: 16px;
}

.ltcal-slot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(172px, 1fr));
    gap: 10px;
}

.ltcal-slot {
    display: block;
    width: 100%;
    min-height: 78px;
    padding: 12px;
    color: var(--ltcal-ink);
    text-align: left;
    background: #ffffff;
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
}

.ltcal-slot:hover,
.ltcal-slot.is-selected {
    border-color: var(--ltcal-accent);
}

.ltcal-slot.is-selected {
    background: #f3f4f6;
}

.ltcal-slot-time {
    display: block;
    font-size: 16px;
    font-weight: 700;
}

.ltcal-slot-sub {
    display: block;
    margin-top: 6px;
    color: var(--ltcal-muted);
    font-size: 12px;
    line-height: 1.4;
}

.ltcal-empty {
    margin: 0;
    padding: 28px;
    color: var(--ltcal-muted);
    text-align: center;
    background: var(--ltcal-surface);
    border-radius: 8px;
}

.ltcal-booking-panel {
    position: sticky;
    top: 88px;
    padding: 22px;
}

.ltcal-selected {
    padding: 14px;
    margin-bottom: 18px;
    color: var(--ltcal-muted);
    background: var(--ltcal-surface);
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
}

.ltcal-selected strong {
    display: block;
    color: var(--ltcal-ink);
    font-size: 15px;
}

.ltcal-prep {
    background: #111827;
    color: #ffffff;
    border-radius: 8px;
}

.ltcal-prep a {
    color: #ffffff;
    font-weight: 700;
    word-break: break-word;
}

.ltcal-prep h2 {
    margin: 0;
    font-size: 18px;
    line-height: 1.3;
}

.ltcal-prep ul {
    display: grid;
    gap: 10px;
    margin: 16px 0 0;
    padding-left: 20px;
}

.ltcal-prep li {
    font-size: 14px;
    line-height: 1.55;
}

.ltcal-prep-kicker {
    margin: 0 0 8px;
    color: #d1d5db;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ltcal-prep-booking {
    margin-bottom: 18px;
    padding: 18px;
}

.ltcal-form {
    display: grid;
    gap: 14px;
}

.ltcal-form label {
    display: grid;
    gap: 7px;
}

.ltcal-form span {
    font-size: 13px;
    font-weight: 700;
}

.ltcal-form em {
    color: var(--ltcal-muted);
    font-style: normal;
    font-weight: 500;
}

.ltcal-form input,
.ltcal-form textarea {
    width: 100%;
    padding: 11px 12px;
    color: var(--ltcal-ink);
    background: #ffffff;
    border: 1px solid var(--ltcal-line);
    border-radius: 8px;
    font: inherit;
    font-size: 14px;
}

.ltcal-form textarea {
    resize: vertical;
}

.ltcal-form input:focus,
.ltcal-form textarea:focus,
.ltcal-day-option:focus,
.ltcal-slot:focus,
.ltcal-refresh:focus,
.ltcal-primary:focus {
    outline: 2px solid #9ca3af;
    outline-offset: 2px;
}

.ltcal-primary {
    min-height: 44px;
    color: #ffffff;
    background: var(--ltcal-accent);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-size: 15px;
    font-weight: 700;
}

.ltcal-details {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--ltcal-line);
}

.ltcal-details p {
    margin: 12px 0 0;
    color: var(--ltcal-muted);
    font-size: 14px;
    line-height: 1.55;
}

.ltcal-details a {
    color: var(--ltcal-ink);
    font-weight: 700;
    word-break: break-word;
}

.ltcal-confirm-page {
    width: min(840px, calc(100% - 40px));
    margin: 0 auto;
    padding: 64px 0 80px;
}

.ltcal-confirm-hero {
    margin-bottom: 24px;
}

.ltcal-confirm-hero h1 {
    margin: 0;
    font-size: clamp(34px, 6vw, 54px);
    line-height: 1.06;
}

.ltcal-confirm-hero p[data-confirmation-time] {
    margin: 18px 0 0;
    color: var(--ltcal-muted);
    font-size: 17px;
    line-height: 1.6;
}

.ltcal-confirm-time {
    display: block;
    color: var(--ltcal-ink);
    font-weight: 700;
}

.ltcal-prep-confirm {
    padding: 26px;
}

@media (max-width: 920px) {
    .ltcal-intro,
    .ltcal-grid {
        grid-template-columns: 1fr;
    }

    .ltcal-booking-panel {
        position: static;
    }
}

@media (max-width: 620px) {
    .ltcal-nav {
        height: 58px;
        padding: 0 18px;
    }

    .ltcal-page {
        width: min(100% - 28px, 1180px);
        padding: 32px 0 52px;
    }

    .ltcal-confirm-page {
        width: min(100% - 28px, 840px);
        padding: 42px 0 56px;
    }

    .ltcal-intro h1 {
        font-size: 34px;
    }

    .ltcal-panel-heading {
        display: grid;
    }

    .ltcal-slot-grid {
        grid-template-columns: 1fr;
    }
}