/* ============================================================
   Session Booking — Front-end Styles
   ============================================================ */

:root {
    --sb-accent:    #2c7be5;
    --sb-accent-h:  #1a5dbf;
    --sb-success:   #1db954;
    --sb-danger:    #e53e3e;
    --sb-bg:        #ffffff;
    --sb-surface:   #f8fafc;
    --sb-border:    #e2e8f0;
    --sb-text:      #1a202c;
    --sb-muted:     #718096;
    --sb-radius:    10px;
    --sb-shadow:    0 4px 24px rgba(0,0,0,.08);
}

.sb-wrap {
    max-width: 560px;
    margin: 0 auto;
    font-family: inherit;
    color: var(--sb-text);
}

/* ---- Steps ---- */
.sb-step { display: none; }
.sb-step.active { display: block; animation: sbFadeIn .25s ease; }

@keyframes sbFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.sb-step-title {
    margin: 0 0 20px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--sb-text);
    border-bottom: 2px solid var(--sb-accent);
    padding-bottom: 8px;
    font-family: "Gilda Display", serif;
}

/* ---- Calendar ---- */
#sb-calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

#sb-month-label {
    font-weight: 600;
    font-size: 1rem;
    color: var(--sb-text);
}

.sb-nav-btn {
    background: none;
    border: 1px solid var(--sb-border);
    border-radius: 6px;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--sb-accent);
    transition: background .15s;
}
.sb-nav-btn:hover { background: var(--sb-surface); }

#sb-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 16px;
}

.sb-cal-day-name {
    text-align: center;
    font-size: .72rem;
    font-weight: 500;
    color: var(--sb-muted);
    padding: 4px 0;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.sb-cal-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: .9rem;
    cursor: default;
    user-select: none;
    transition: background .15s, color .15s;
}

.sb-cal-day.empty { background: transparent; }
.sb-cal-day.past  { color: var(--sb-border); }

.sb-cal-day.available {
    background: #ebf4ff;
    color: var(--sb-accent);
    cursor: pointer;
    font-weight: 500;
}
.sb-cal-day.available:hover { background: var(--sb-accent); color: #fff; }
.sb-cal-day.available.selected { background: var(--sb-accent); color: #fff; box-shadow: 0 2px 8px rgba(44,123,229,.4); }
.sb-cal-day.unavailable { color: var(--sb-muted); }

/* ---- Slots ---- */
#sb-slots-wrap { margin-top: 8px; }

#sb-slots-title {
    font-size: .95rem;
    font-weight: 500;
    margin: 0 0 10px;
}

#sb-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sb-slot {
    padding: 8px 16px;
    border: 2px solid var(--sb-border);
    border-radius: 8px;
    cursor: pointer;
    font-size: .88rem;
    font-weight: 500;
    background: var(--sb-bg);
    transition: all .15s;
    color: var(--sb-text);
}
.sb-slot:hover   { border-color: var(--sb-accent); color: var(--sb-accent); }
.sb-slot.selected { border-color: var(--sb-accent); background: var(--sb-accent); color: #fff; }

/* ---- Form fields ---- */
.sb-field {
    margin-bottom: 16px;
}

.sb-field label {
    display: block;
    font-size: .88rem;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--sb-text);
}

.sb-req { color: var(--sb-danger); }
.sb-opt { color: var(--sb-muted); font-weight: 400; font-size: .82rem; }

.sb-field input[type="text"],
.sb-field input[type="email"],
.sb-field input[type="tel"] {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 14px;
    border: 1.5px solid var(--sb-border);
    border-radius: 8px;
    font-size: .95rem;
    color: var(--sb-text);
    background: var(--sb-bg);
    transition: border-color .15s;
    outline: none;
}
.sb-field input:focus { border-color: var(--sb-accent); }

/* ---- Payment ---- */
.sb-summary {
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    padding: 14px 18px;
    margin-bottom: 20px;
    font-size: .9rem;
    line-height: 1.7;
}

.sb-payment-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.sb-payment-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border: 2px solid var(--sb-border);
    border-radius: var(--sb-radius);
    cursor: pointer;
    transition: border-color .15s, background .15s;
}
.sb-payment-option:hover { border-color: var(--sb-accent); background: #ebf4ff; }
.sb-payment-option.selected { border-color: var(--sb-accent); background: #ebf4ff; }
.sb-payment-option input[type="radio"] { margin-top: 2px; accent-color: var(--sb-accent); }

.sb-pm-label   { font-weight: 600; font-size: .93rem; }
.sb-pm-desc    { font-size: .82rem; color: var(--sb-muted); margin-top: 2px; }

.sb-bank-info {
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: .85rem;
    white-space: pre-line;
    line-height: 1.6;
    margin-top: 8px;
    display: none;
}
.sb-bank-info.visible { display: block; }

/* ---- Terms ---- */
.sb-terms-field label {
    align-items: center;
    gap: 8px;
    font-size: .9rem;
    font-weight: 400;
    cursor: pointer;
}
.sb-terms-field input[type="checkbox"] { accent-color: var(--sb-accent); width: 16px; height: 16px; }

#sb-terms-link, #sbp-terms-link {
    padding: 0;
    background: transparent;
    color: #ff6839;
}

/* ---- Buttons ---- */
.sb-step-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
    justify-content: flex-end;
}

.sb-btn {
    padding: 10px 24px;
    border-radius: 8px;
    border: none;
    font-size: .95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all .15s;
}
.sb-btn-primary  { background: var(--sb-accent); color: #fff; }
.sb-btn-primary:hover:not(:disabled) { background: var(--sb-accent-h); }
.sb-btn-primary:disabled { background: var(--sb-border); color: var(--sb-muted); cursor: not-allowed; }
.sb-btn-secondary { background: var(--sb-surface); color: var(--sb-text); border: 1.5px solid var(--sb-border); }
.sb-btn-secondary:hover { background: var(--sb-border); }

/* ---- States ---- */
.sb-hidden { display: none !important; }

.sb-error {
    background: #fff5f5;
    border: 1px solid #feb2b2;
    color: var(--sb-danger);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: .9rem;
    margin-top: 12px;
}

/* ---- Success ---- */
.sb-success {
    text-align: center;
    padding: 40px 20px;
}
.sb-success-icon {
    width: 64px; height: 64px;
    line-height: 64px;
    border-radius: 50%;
    background: var(--sb-success);
    color: #fff;
    font-size: 2rem;
    margin: 0 auto 20px;
}
.sb-success h3 { font-size: 1.4rem; margin: 0 0 10px; }
.sb-success p  { color: var(--sb-muted); }

/* ---- Loading spinner ---- */
.sb-loading {
    display: inline-block;
    width: 18px; height: 18px;
    border: 3px solid rgba(255,255,255,.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: sbSpin .7s linear infinite;
    vertical-align: middle;
    margin-left: 8px;
}
@keyframes sbSpin { to { transform: rotate(360deg); } }

/* ---- PayPal button container ---- */
.sb-paypal-container {
    margin-top: 12px;
    max-width: 340px;
}

/* ---- Slot count selector ---- */
.sb-slot-count-wrap {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    background: var(--sb-surface);
    border: 1px solid var(--sb-border);
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 12px;
    font-size: .9rem;
}
.sb-slot-count-wrap label {
    font-weight: 500;
    color: var(--sb-text);
    white-space: nowrap;
}
.sb-slot-count-wrap select {
    padding: 5px 10px;
    border: 1.5px solid var(--sb-border);
    border-radius: 6px;
    font-size: .9rem;
    background: var(--sb-bg);
    color: var(--sb-text);
    cursor: pointer;
}
.sb-slot-count-wrap select:focus {
    outline: none;
    border-color: var(--sb-accent);
}
.sb-slot-hint {
    margin: 0;
    font-size: .8rem;
    color: var(--sb-muted);
    width: 100%;
}

/* ---- Slot info summary line ---- */
.sb-slot-info {
    margin-top: 10px;
    padding: 8px 14px;
    background: #ebf4ff;
    border-radius: 6px;
    font-size: .88rem;
    color: var(--sb-accent);
    min-height: 0;
    transition: all .2s;
}
.sb-slot-info:empty {
    display: none;
}