/**
 * BuB Seminar Tool – Frontend CSS
 *
 * Modern, theme-respectful styling with BEM classes.
 * Inherits Astra Pro typography, colors, and spacing.
 * Override via theme custom CSS or CSS variables.
 */

/* ─── Variables ──────────────────────────────────────────── */
:root {
    --bub-accent: #2c6fbb;
    --bub-accent-hover: #1d5a9e;
    --bub-success: #27ae60;
    --bub-warning: #f39c12;
    --bub-error: #e74c3c;
    --bub-muted: #7f8c8d;
    --bub-border: #e2e8f0;
    --bub-bg-light: #f7f9fc;
    --bub-bg-card: #ffffff;
    --bub-radius: 8px;
    --bub-radius-lg: 12px;
    --bub-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --bub-shadow-md: 0 4px 12px rgba(0,0,0,0.1);
}

/* ─── Seminar Container ──────────────────────────────────── */
.bub-seminar {
    margin: 1.5em 0;
}

/* ─── Description (editor content, rendered between details and form) ── */
.bub-seminar-description {
    margin: 2.5em 0;
    padding-top: 2em;
    border-top: 1px solid var(--bub-border);
}

/* ─── Deadline Alert (Ampel) ─────────────────────────────── */
.bub-deadline {
    display: flex;
    align-items: center;
    gap: 1em;
    padding: 1em 1.5em;
    border-radius: var(--bub-radius-lg);
    margin-bottom: 2em;
    border: 1px solid;
}

.bub-deadline--green {
    background: #f0fdf4;
    border-color: #bbf7d0;
}

.bub-deadline--yellow {
    background: #fffbeb;
    border-color: #fde68a;
}

.bub-deadline--red {
    background: #fef2f2;
    border-color: #fecaca;
}

.bub-deadline__light {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bub-deadline__dot {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: block;
}

.bub-deadline--green .bub-deadline__dot {
    background: var(--bub-success);
    box-shadow: 0 0 8px rgba(39, 174, 96, 0.4);
}

.bub-deadline--yellow .bub-deadline__dot {
    background: var(--bub-warning);
    box-shadow: 0 0 8px rgba(243, 156, 18, 0.4);
}

.bub-deadline--red .bub-deadline__dot {
    background: var(--bub-error);
    box-shadow: 0 0 8px rgba(231, 76, 60, 0.4);
    animation: bub-pulse 2s infinite;
}

@keyframes bub-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.bub-deadline__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.15em;
}

.bub-deadline__content strong {
    font-size: 1.05em;
}

.bub-deadline__content span {
    font-size: 0.9em;
    color: var(--bub-muted);
}

.bub-deadline__note {
    font-style: italic;
}

.bub-deadline__cta {
    flex-shrink: 0;
    display: inline-block;
    padding: 0.6em 1.5em;
    background: var(--bub-accent);
    color: #fff !important;
    text-decoration: none !important;
    border-radius: var(--bub-radius);
    font-weight: 600;
    font-size: 0.95em;
    transition: background 0.2s;
    white-space: nowrap;
}

.bub-deadline__cta:hover {
    background: var(--bub-accent-hover);
}

/* ─── Hero Section (Image + Key Facts) ───────────────────── */
.bub-seminar__hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2em;
    margin-bottom: 2em;
}

.bub-seminar__image img {
    width: 100%;
    height: auto;
    border-radius: var(--bub-radius-lg);
    object-fit: cover;
}

.bub-seminar__keyfacts {
    display: flex;
    flex-direction: column;
    gap: 0.2em;
}

.bub-seminar__subtitle {
    color: var(--bub-muted);
    font-size: 1.05em;
    font-style: italic;
    margin: 0 0 0.5em;
}

/* ─── Key Facts ──────────────────────────────────────────── */
.bub-keyfact {
    display: flex;
    flex-direction: column;
    padding: 0.7em 0;
    border-bottom: 1px solid var(--bub-border);
}

.bub-keyfact:last-of-type {
    border-bottom: none;
}

.bub-keyfact-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1em;
}

.bub-keyfact-row .bub-keyfact {
    border-bottom: 1px solid var(--bub-border);
}

.bub-keyfact__label {
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bub-muted);
    font-weight: 600;
    margin-bottom: 0.15em;
}

.bub-keyfact__value {
    font-weight: 500;
}

.bub-keyfact__sub {
    font-size: 0.85em;
    color: var(--bub-muted);
}

.bub-keyfact__price {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--bub-accent);
    line-height: 1.2;
}

/* ─── CTA Button ─────────────────────────────────────────── */
.bub-seminar__cta-btn {
    display: inline-block;
    margin-top: 1em;
    padding: 0.9em 2.5em;
    background: var(--bub-accent);
    color: #fff !important;
    text-decoration: none !important;
    border-radius: var(--bub-radius);
    font-size: 1.15em;
    font-weight: 700;
    text-align: center;
    transition: background 0.2s, transform 0.15s;
    box-shadow: var(--bub-shadow-md);
}

.bub-seminar__cta-btn:hover {
    background: var(--bub-accent-hover);
    transform: translateY(-1px);
}

/* ─── Status Badge ───────────────────────────────────────── */
.bub-seminar__status-badge {
    display: inline-block;
    margin-top: 1em;
    padding: 0.7em 1.5em;
    border-radius: var(--bub-radius);
    font-weight: 600;
    text-align: center;
}

.bub-seminar__status-badge--full {
    background: #fef3cd;
    color: #856404;
}

.bub-seminar__status-badge--closed {
    background: #fce4ec;
    color: #c62828;
}

.bub-seminar__status-badge--ended {
    background: var(--bub-bg-light);
    color: var(--bub-muted);
}

/* ─── Section Title ──────────────────────────────────────── */
.bub-section-title {
    font-size: 1.15em;
    font-weight: 700;
    margin: 0 0 1em;
    padding-bottom: 0.4em;
    border-bottom: 2px solid var(--bub-accent);
    display: inline-block;
}

/* ─── Venue + Downloads (two-column wrapper) ─────────────── */
.bub-venue-downloads {
    margin-bottom: 2em;
}

.bub-venue-downloads--two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2em;
    align-items: start;
}

/* ─── Venue Section ──────────────────────────────────────── */
.bub-venue {
    background: var(--bub-bg-light);
    border-radius: var(--bub-radius-lg);
    padding: 1.5em 2em;
}

.bub-venue-downloads:not(.bub-venue-downloads--two-col) .bub-venue {
    margin-bottom: 2em;
}

.bub-venue__main,
.bub-venue__contact {
    display: flex;
    flex-direction: column;
    gap: 0.4em;
}

.bub-venue__contact {
    margin-top: 0.8em;
    padding-top: 0.8em;
    border-top: 1px solid var(--bub-border);
}

.bub-venue__map-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3em;
    margin-top: 0.3em;
    font-weight: 500;
}

/* ─── Downloads ──────────────────────────────────────────── */
.bub-downloads {
    background: var(--bub-bg-light);
    border-radius: var(--bub-radius-lg);
    padding: 1.5em 2em;
}

.bub-venue-downloads:not(.bub-venue-downloads--two-col) .bub-downloads {
    margin-bottom: 2em;
}

/* Shortcode variant: transparent, inherits from its container */
.bub-downloads--shortcode {
    background: none;
    border-radius: 0;
    padding: 0;
}

.bub-downloads--shortcode .bub-section-title {
    color: inherit;
    border-bottom-color: currentColor;
    opacity: 0.9;
}

.bub-downloads__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15em;
}

.bub-downloads__list li a {
    display: flex;
    align-items: center;
    gap: 0.7em;
    padding: 0.5em 0;
    text-decoration: none !important;
    color: inherit;
    font-weight: 400;
    font-size: 0.95em;
    line-height: 1.4;
    transition: opacity 0.2s, transform 0.15s;
}

.bub-downloads__list li a:hover {
    opacity: 0.75;
    transform: translateX(2px);
}

.bub-downloads__list li a::before {
    content: '';
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--bub-accent);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3Cpolyline points='12 5 19 12 12 19'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    transition: transform 0.2s;
}

.bub-downloads__list li a:hover::before {
    transform: scale(1.1);
}

/* ─── Info Bar ───────────────────────────────────────────── */
.bub-infobar {
    display: flex;
    gap: 2em;
    padding: 1em 1.5em;
    background: var(--bub-bg-light);
    border-radius: var(--bub-radius);
    margin-bottom: 2em;
}

.bub-infobar__item {
    display: flex;
    flex-direction: column;
}

.bub-infobar__label {
    font-size: 0.75em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bub-muted);
    font-weight: 600;
}

.bub-infobar__value {
    font-weight: 600;
}

/* ─── Closed Message ─────────────────────────────────────── */
.bub-seminar__closed-msg {
    padding: 1.5em;
    text-align: center;
    background: var(--bub-bg-light);
    border-radius: var(--bub-radius-lg);
    color: var(--bub-muted);
    font-size: 1.05em;
    margin: 2em 0;
}

/* ─── Booking Form ───────────────────────────────────────── */
.bub-booking-form-wrap {
    margin: 2.5em 0;
    scroll-margin-top: 2em;
}

.bub-booking-form__section {
    border: 1px solid var(--bub-border);
    border-radius: var(--bub-radius-lg);
    padding: 1.5em 2em;
    margin-bottom: 1.5em;
    background: var(--bub-bg-card);
}

.bub-booking-form__section legend {
    font-weight: 700;
    font-size: 1.1em;
    padding: 0 0.5em;
    color: var(--bub-accent);
}

.bub-booking-form__row {
    margin-bottom: 1em;
}

.bub-booking-form__row--half {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1em;
}

.bub-booking-form__row--address {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 1em;
}

.bub-booking-form__field label {
    display: block;
    margin-bottom: 0.3em;
    font-weight: 500;
    font-size: 0.9em;
}

.bub-booking-form__field label .required {
    color: var(--bub-error);
}

.bub-booking-form__field input,
.bub-booking-form__field textarea,
.bub-booking-form__field select {
    width: 100%;
    box-sizing: border-box;
    padding: 0.6em 0.8em;
    border: 1px solid var(--bub-border);
    border-radius: var(--bub-radius);
    font: inherit;
    transition: border-color 0.2s;
}

.bub-booking-form__field input:focus,
.bub-booking-form__field textarea:focus {
    border-color: var(--bub-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(44, 111, 187, 0.1);
}

.bub-booking-form__hint {
    color: var(--bub-muted);
    font-size: 0.9em;
    margin-bottom: 1em;
}

.bub-booking-form__errors {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
    border-radius: var(--bub-radius);
    padding: 1em 1.5em;
    margin-bottom: 1.5em;
}

.bub-booking-form__errors ul {
    margin: 0.5em 0 0 1.5em;
}

/* ─── Participant Rows ───────────────────────────────────── */
.bub-participant-row {
    padding: 1em 0;
    border-bottom: 1px solid var(--bub-border);
    position: relative;
}

.bub-participant-row:last-child {
    border-bottom: none;
}

.bub-participant-row__title {
    font-size: 1em;
    font-weight: 600;
    margin-bottom: 0.5em;
    color: var(--bub-accent);
}

.bub-participant-row__remove {
    position: absolute;
    top: 1em;
    right: 0;
    background: none;
    border: none;
    color: var(--bub-error);
    cursor: pointer;
    font-size: 0.85em;
    padding: 0.3em 0.5em;
}

.bub-participant-row__remove:hover {
    text-decoration: underline;
}

/* ─── Buttons ────────────────────────────────────────────── */
.bub-booking-form__add-btn {
    background: none;
    border: 2px dashed var(--bub-border);
    border-radius: var(--bub-radius);
    padding: 0.7em 1.5em;
    cursor: pointer;
    color: var(--bub-accent);
    font-weight: 500;
    margin-top: 0.5em;
    transition: border-color 0.2s, background 0.2s;
}

.bub-booking-form__add-btn:hover {
    border-color: var(--bub-accent);
    background: rgba(44, 111, 187, 0.04);
}

.bub-booking-form__submit {
    text-align: center;
    margin: 2em 0;
}

.bub-booking-form__submit-btn {
    padding: 1em 3em;
    font-size: 1.15em;
    font-weight: 700;
    cursor: pointer;
    background: var(--bub-accent);
    color: #fff;
    border: none;
    border-radius: var(--bub-radius);
    transition: background 0.2s, transform 0.15s;
    box-shadow: var(--bub-shadow-md);
}

.bub-booking-form__submit-btn:hover {
    background: var(--bub-accent-hover);
    transform: translateY(-1px);
}

/* ─── Confirmation ───────────────────────────────────────── */
.bub-booking-confirmation {
    text-align: center;
    padding: 3em 2em;
    margin: 2em 0;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--bub-radius-lg);
}

.bub-booking-confirmation__icon {
    font-size: 3em;
    color: var(--bub-success);
    margin-bottom: 0.3em;
}

.bub-booking-confirmation__code {
    display: inline-block;
    font-size: 1.4em;
    font-weight: 700;
    padding: 0.5em 1.5em;
    background: #fff;
    border: 2px solid var(--bub-success);
    border-radius: var(--bub-radius);
    letter-spacing: 0.05em;
    margin-top: 0.5em;
}

/* ─── Seminar Grid (3-column card layout) ────────────────── */
.bub-seminar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5em;
}

.bub-seminar-grid__empty {
    grid-column: 1 / -1;
    padding: 3em 2em;
    text-align: center;
    color: var(--bub-muted);
    font-size: 1.05em;
}

/* ─── Card ───────────────────────────────────────────────── */
.bub-card {
    display: flex;
    flex-direction: column;
    background: var(--bub-bg-card);
    border-radius: var(--bub-radius-lg);
    overflow: hidden;
    border: 1px solid var(--bub-border);
    transition: box-shadow 0.25s, transform 0.25s;
}

.bub-card:hover {
    box-shadow: var(--bub-shadow-md);
    transform: translateY(-3px);
}

.bub-card--inactive {
    opacity: 0.7;
}

.bub-card--inactive:hover {
    transform: none;
}

/* ─── Card Image ─────────────────────────────────────────── */
.bub-card__image-wrap {
    position: relative;
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    text-decoration: none;
}

.bub-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}

.bub-card:hover .bub-card__image {
    transform: scale(1.04);
}

.bub-card__image--placeholder {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

/* Date badge */
.bub-card__badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--bub-accent);
    color: #fff;
    border-radius: var(--bub-radius);
    padding: 0.35em 0.65em;
    text-align: center;
    line-height: 1.1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    z-index: 1;
}

.bub-card__badge-day {
    display: block;
    font-size: 1.6em;
    font-weight: 800;
    line-height: 1;
}

.bub-card__badge-month {
    display: block;
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    margin-top: 1px;
}

/* Badge status variants */
.bub-card__badge--closed {
    background: var(--bub-warning);
}

.bub-card__badge--full {
    background: var(--bub-error);
}

.bub-card__badge--ended {
    background: #64748b;
}

/* ─── Card Body ──────────────────────────────────────────── */
.bub-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1em 1.25em 1.25em;
}

/* Meta chips (date range, duration) */
.bub-card__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4em;
    margin-bottom: 0.6em;
}

.bub-card__chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3em;
    font-size: 0.78em;
    color: var(--bub-muted);
    background: var(--bub-bg-light);
    padding: 0.2em 0.6em;
    border-radius: 4px;
}

.bub-card__chip svg {
    flex-shrink: 0;
    opacity: 0.5;
}

/* Title */
.bub-card__title {
    margin: 0 0 0.35em;
    font-size: 1.05em;
    font-weight: 700;
    line-height: 1.3;
}

.bub-card__title a {
    text-decoration: none;
    color: inherit;
    transition: color 0.15s;
}

.bub-card__title a:hover {
    color: var(--bub-accent);
}

/* Location */
.bub-card__location {
    display: flex;
    align-items: flex-start;
    gap: 0.35em;
    font-size: 0.82em;
    color: var(--bub-muted);
    margin-bottom: 0.5em;
    line-height: 1.4;
}

.bub-card__location svg {
    flex-shrink: 0;
    margin-top: 2px;
    opacity: 0.5;
}

/* Excerpt */
.bub-card__excerpt {
    font-size: 0.85em;
    color: #64748b;
    margin: 0 0 0.8em;
    line-height: 1.55;
    flex: 1;
}

/* Footer: price + CTA */
.bub-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 0.8em;
    border-top: 1px solid var(--bub-border);
}

.bub-card__price {
    font-size: 1.15em;
    font-weight: 700;
    color: var(--bub-accent);
}

.bub-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    padding: 0.5em 1.1em;
    background: var(--bub-accent);
    color: #fff !important;
    text-decoration: none !important;
    border-radius: var(--bub-radius);
    font-weight: 600;
    font-size: 0.82em;
    letter-spacing: 0.02em;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
}

.bub-card__cta:hover {
    background: var(--bub-accent-hover);
    transform: translateY(-1px);
}

.bub-card__cta svg {
    transition: transform 0.2s;
}

.bub-card__cta:hover svg {
    transform: translateX(3px);
}

/* ─── Legacy: keep old class names working ───────────────── */
.bub-seminar-list {
    display: flex;
    flex-direction: column;
    gap: 1.2em;
}

.bub-seminar-list__empty {
    padding: 2em;
    text-align: center;
    color: var(--bub-muted);
}

/* ─── Booking Lookup ─────────────────────────────────────── */
.bub-booking-lookup__error {
    background: #fef2f2;
    color: #991b1b;
    padding: 1em 1.5em;
    border-radius: var(--bub-radius);
    border: 1px solid #fecaca;
    margin-top: 1em;
}

.bub-booking-lookup__result {
    margin-top: 1.5em;
    padding: 1.5em 2em;
    background: var(--bub-bg-light);
    border-radius: var(--bub-radius-lg);
    border: 1px solid var(--bub-border);
}

/* ─── Responsive: Tablet (2-column grid) ─────────────────── */
@media (max-width: 960px) {
    .bub-seminar-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2em;
    }
}

/* ─── Responsive: Mobile ─────────────────────────────────── */
@media (max-width: 768px) {
    .bub-seminar__hero {
        grid-template-columns: 1fr;
    }

    .bub-keyfact-row {
        grid-template-columns: 1fr;
    }

    .bub-venue-downloads--two-col {
        grid-template-columns: 1fr;
    }

    .bub-booking-form__row--half,
    .bub-booking-form__row--address {
        grid-template-columns: 1fr;
    }

    .bub-deadline {
        flex-direction: column;
        text-align: center;
    }

    .bub-deadline__cta {
        width: 100%;
        text-align: center;
    }

    .bub-infobar {
        flex-direction: column;
        gap: 1em;
    }

    .bub-booking-form__section {
        padding: 1em 1.2em;
    }

    .bub-seminar__cta-btn {
        display: block;
        text-align: center;
    }
}

/* ─── Responsive: Small Mobile (1-column grid) ───────────── */
@media (max-width: 540px) {
    .bub-seminar-grid {
        grid-template-columns: 1fr;
        gap: 1em;
    }

    .bub-card__footer {
        flex-direction: column;
        gap: 0.6em;
        align-items: stretch;
    }

    .bub-card__cta {
        text-align: center;
        justify-content: center;
    }

    .bub-keyfact__price {
        font-size: 1.3em;
    }
}