/* ============================================================================
   book.css — Public demo-booking page (/book)
   ----------------------------------------------------------------------------
   Dark, poster-branded (GrapplingU × Greg Souders). Uses the global design
   tokens from styles/base/variables.css — no hardcoded colors. BEM-ish naming
   (block__element--modifier). Desktop-first per project convention, but must
   not break at 320px. :focus-visible rings, >=44px targets, reduced-motion
   respected. No Firebase, no SPA chrome — this is a standalone static page.
   ============================================================================ */

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

html,
body {
    margin: 0;
    padding: 0;
}

.book-page {
    min-height: 100vh;
    background: var(--bg-base);
    /* Subtle radial accents lifted from the printed poster */
    background-image:
        radial-gradient(circle at 18% 8%, rgba(var(--accent-rgb), 0.16) 0%, transparent 48%),
        radial-gradient(circle at 84% 92%, rgba(var(--accent-rgb), 0.10) 0%, transparent 48%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-family-base);
    -webkit-font-smoothing: antialiased;
    line-height: var(--line-height-normal);
}

/* Top accent stripe — matches the poster's signature bar */
.book-stripe {
    height: 5px;
    width: 100%;
    background: linear-gradient(90deg,
        var(--accent) 0%,
        var(--accent-hover) 50%,
        var(--accent) 100%);
}

/* ── Skip link (a11y) ───────────────────────────────────────────────── */
.book-skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: var(--z-skip-nav);
    background: var(--accent);
    color: var(--text-on-accent);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}
.book-skip-link:focus {
    left: var(--space-md);
    top: var(--space-md);
}

/* Screen-reader-only utility */
.book-visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.book-shell {
    max-width: 920px;
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 3.5rem) clamp(1rem, 4vw, 2rem) 4rem;
}

/* ── Hero ───────────────────────────────────────────────────────────── */
.book-hero {
    text-align: center;
    margin-bottom: var(--space-2xl);
}
.book-brand {
    font-size: var(--font-size-xs);
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--accent-text);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--space-md);
}
.book-brand__x {
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
    margin: 0 6px;
}
.book-hero__title {
    font-size: clamp(2rem, 6vw, 3.25rem);
    line-height: 1.05;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin: 0 0 var(--space-md);
}
.book-hero__sub {
    font-size: clamp(1rem, 2.4vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 38ch;
    margin: 0 auto;
}

.book-hero__points {
    list-style: none;
    margin: var(--space-md) auto 0;
    padding: 0;
    max-width: 40ch;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    text-align: left;
}
.book-hero__points li {
    position: relative;
    padding-left: 1.5rem;
    font-size: clamp(0.9rem, 2vw, 1rem);
    color: var(--text-secondary);
    line-height: 1.4;
}
.book-hero__points li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}
.book-hero__points strong { color: var(--text-primary); }

/* ── Offer card ─────────────────────────────────────────────────────── */
.book-offer {
    border: 1px solid var(--border-medium);
    border-left: 4px solid var(--accent);
    background: linear-gradient(135deg,
        rgba(var(--accent-rgb), 0.10) 0%,
        rgba(var(--accent-rgb), 0.03) 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-xl);
    margin-bottom: var(--space-2xl);
}
.book-offer__label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--space-sm);
}
.book-offer__star {
    color: var(--accent-warning);
    font-size: 1.1em;
}
.book-offer__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-lg);
}
.book-offer__list li {
    position: relative;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}
.book-offer__list li::before {
    content: '★';
    position: absolute;
    left: 0;
    color: var(--accent-warning);
    font-size: 0.8em;
    top: 0.15em;
}

/* ── Widget ─────────────────────────────────────────────────────────── */
.book-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: clamp(1.25rem, 3vw, 2rem);
    margin-bottom: var(--space-xl);
}
.book-widget__heading,
.book-form-section__heading {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--space-lg);
}

.book-widget__toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

/* Week navigation */
.book-week-nav {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.book-week-nav__btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-colors);
}
.book-week-nav__btn:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-strong);
}
.book-week-nav__btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.book-week-nav__label {
    font-size: var(--font-size-sm-mid);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    min-width: 11ch;
    text-align: center;
}

/* Timezone selector */
.book-tz {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}
.book-tz__select-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}
.book-tz__select {
    appearance: none;
    -webkit-appearance: none;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 10px 2rem 10px 0.75rem;
    min-height: 44px;
    font-family: inherit;
    font-size: var(--font-size-sm);
    cursor: pointer;
    max-width: 60vw;
}
.book-tz__caret {
    position: absolute;
    right: 0.7rem;
    pointer-events: none;
    color: var(--text-tertiary);
    font-size: 0.7rem;
}

/* Two-pane picker */
.book-picker {
    display: grid;
    grid-template-columns: minmax(150px, 240px) 1fr;
    gap: var(--space-lg);
    align-items: start;
}

/* LEFT: day list */
.book-days {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 420px;
    overflow-y: auto;
    padding-right: 4px;
}
.book-day {
    text-align: left;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    min-height: 44px;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-colors);
}
.book-day:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
}
.book-day--selected {
    background: rgba(var(--accent-rgb), 0.16);
    border-color: var(--accent);
}
.book-day__weekday {
    display: block;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    font-weight: var(--font-weight-semibold);
}
.book-day--selected .book-day__weekday {
    color: var(--accent-text);
}
.book-day__date {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-top: 2px;
}
.book-day__count {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* RIGHT: times pane */
.book-times-pane {
    min-height: 220px;
}
.book-times-pane__heading {
    font-size: var(--font-size-sm-mid);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    margin: 0 0 var(--space-md);
}
.book-times {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
    gap: var(--space-sm);
}
.book-slot {
    min-height: 44px;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.5rem;
    font-family: inherit;
    font-size: var(--font-size-sm-mid);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-colors);
}
.book-slot:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}
.book-slot--selected {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--text-on-accent);
}

/* Empty / error states */
.book-empty,
.book-error {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
}
.book-empty__title,
.book-error__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--space-sm);
}
.book-error__detail {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin: 0 0 var(--space-lg);
}
.book-link-btn {
    background: none;
    border: none;
    color: var(--accent-text);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    padding: var(--space-sm);
    min-height: 44px;
    text-decoration: underline;
}

/* Skeleton shimmer */
.book-skeleton {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}
.book-skeleton__bar {
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(90deg,
        var(--bg-elevated) 0%,
        var(--bg-hover) 50%,
        var(--bg-elevated) 100%);
    background-size: 200% 100%;
    animation: book-shimmer 1.4s ease-in-out infinite;
}
.book-skeleton__bar:nth-child(2) { width: 88%; }
.book-skeleton__bar:nth-child(3) { width: 94%; }
.book-skeleton__bar:nth-child(4) { width: 80%; }
.book-skeleton__bar:nth-child(5) { width: 90%; }

@keyframes book-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Form ───────────────────────────────────────────────────────────── */
.book-form-section {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: clamp(1.25rem, 3vw, 2rem);
    margin-bottom: var(--space-xl);
}
.book-form-section__summary {
    color: var(--accent-text);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--space-lg);
}
.book-field {
    margin-bottom: var(--space-lg);
}
.book-field__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}
.book-field__opt {
    color: var(--text-tertiary);
    font-weight: var(--font-weight-normal);
}
.book-field__input {
    width: 100%;
    min-height: 44px;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.85rem;
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: var(--transition-colors);
}
.book-field__input::placeholder {
    color: var(--text-quaternary);
}
.book-field__input:hover {
    border-color: var(--border-strong);
}
.book-field__input--area {
    resize: vertical;
    min-height: 84px;
}
.book-field__input[aria-invalid="true"] {
    border-color: var(--accent-danger);
}

/* Honeypot — visually hidden but still in the DOM for bots. Kept off-screen
   rather than display:none (some bots skip display:none fields). */
.book-honeypot {
    position: absolute;
    left: -9999px;
    top: 0;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.book-form__status {
    font-size: var(--font-size-sm);
    margin: 0 0 var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}
.book-form__status--error {
    background: var(--accent-danger-light);
    color: var(--accent-danger);
}
.book-form__status--info {
    background: var(--accent-light);
    color: var(--accent-text);
}

/* ── Buttons ────────────────────────────────────────────────────────── */
.book-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: var(--transition-colors);
}
.book-btn--primary {
    background: var(--accent);
    color: var(--text-on-accent);
}
.book-btn--primary:hover {
    background: var(--accent-hover);
}
.book-btn--ghost {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-medium);
}
.book-btn--ghost:hover {
    background: var(--bg-hover);
}
.book-btn--block {
    width: 100%;
}
.book-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* ── Confirmation ───────────────────────────────────────────────────── */
.book-confirm {
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: var(--radius-xl);
    padding: clamp(1.5rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: var(--space-xl);
    box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.18);
}
.book-confirm__check {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--accent-success);
    color: #fff;
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
}
.book-confirm__heading {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--space-sm);
}
.book-confirm__time {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--accent-text);
    margin: 0 0 var(--space-sm);
}
.book-confirm__invite {
    color: var(--text-secondary);
    margin: 0 0 var(--space-xl);
}
.book-confirm__hint {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin: var(--space-lg) 0 0;
}
/* Attendance-gated reward line, repeated in the post-booking confirmation
   (greg-instructionals-preview.html) — possession framing, no conditional
   "if". */
.book-confirm__reward {
    color: var(--accent-text);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    margin: 0 0 var(--space-lg);
}
/* "Continue to your dashboard" link shown after a successful booking
   (greg-instructionals-preview.html) — sits below the Meet-link CTA. */
#giContinueConfirm {
    margin-top: var(--space-lg);
}

/* ── Footer ─────────────────────────────────────────────────────────── */
.book-footer {
    text-align: center;
    color: var(--text-quaternary);
    font-size: var(--font-size-xs);
    letter-spacing: 0.06em;
    margin-top: var(--space-2xl);
}

/* ── Toast ──────────────────────────────────────────────────────────── */
.book-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-toast);
    max-width: calc(100vw - 32px);
    text-align: center;
}
.book-toast--error {
    border-color: var(--accent-danger);
}

/* ── Focus visibility (WCAG 2.4.7 / 2.4.11) ─────────────────────────── */
.book-page a:focus-visible,
.book-page button:focus-visible,
.book-page input:focus-visible,
.book-page textarea:focus-visible,
.book-page select:focus-visible,
.book-day:focus-visible {
    outline: 3px solid var(--accent-hover);
    outline-offset: 2px;
}
/* Keep keyboard focus obvious even on the selected (accent-bg) slot/day */
.book-slot--selected:focus-visible,
.book-day--selected:focus-visible {
    outline-color: var(--text-primary);
}

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .book-picker {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    /* Day strip → a smooth, snappy horizontal carousel. The faded right
       edge signals "scroll for more days" so a clipped card reads as
       intentional, not broken. */
    .book-days {
        flex-direction: row;
        overflow-x: auto;
        max-height: none;
        gap: var(--space-sm);
        padding-bottom: var(--space-sm);
        scroll-snap-type: x mandatory;
        scroll-padding-left: var(--space-xs);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -webkit-mask-image: linear-gradient(to right, #000 88%, transparent);
        mask-image: linear-gradient(to right, #000 88%, transparent);
    }
    .book-days::-webkit-scrollbar { display: none; }
    .book-day {
        flex: 0 0 auto;
        min-width: 124px;
        scroll-snap-align: start;
    }
    /* Roomier thumb targets + a touch more separation on phones. */
    .book-slot {
        min-height: 48px;
    }
    .book-times {
        gap: var(--space-sm);
    }
    .book-widget__toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }
    .book-week-nav {
        justify-content: space-between;
    }
}

/* 320px hardening — no horizontal scroll on the oldest iPhone SE */
@media (max-width: 360px) {
    .book-shell {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    .book-offer {
        padding: var(--space-md);
    }
    .book-times {
        grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    }
}

/* ── Reduced motion ─────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .book-skeleton__bar {
        animation: none;
    }
    .book-page * {
        transition-duration: 0.01ms !important;
    }
}