/* Simple Booking System – Frontend (Kimono Feminine Design) */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600&family=Noto+Sans+JP:wght@300;400;500&display=swap');

:root {
    --sbs-cream:        #FAF6F0;
    --sbs-cream-deep:   #F2EBE0;
    --sbs-gold:         #C4974A;
    --sbs-gold-light:   #E8D4AA;
    --sbs-gold-pale:    #FAF0DC;
    --sbs-brown:        #3D2C1E;
    --sbs-brown-mid:    #7A6456;
    --sbs-brown-light:  #B8A898;
    --sbs-line:         #E4D4C4;
    --sbs-white:        #FFFFFF;
    --sbs-rose:         #C8878A;
    --sbs-rose-pale:    #F8EDEE;
    --sbs-shadow:       0 2px 16px rgba(61,44,30,.08);
}

.sbs-wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 20px 60px;
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--sbs-brown);
    box-sizing: border-box;
}

.sbs-title {
    text-align: center;
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5em;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .12em;
    margin-bottom: 4px;
}

.sbs-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 2px;
    background: var(--sbs-gold);
    margin: 12px auto 0;
    border-radius: 2px;
}

/* Steps */
.sbs-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 32px auto 36px;
    max-width: 480px;
}

.sbs-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: default;
    min-width: 56px;
}

.sbs-step-num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--sbs-cream-deep);
    border: 1.5px solid var(--sbs-line);
    color: var(--sbs-brown-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 500;
    transition: all .3s ease;
}

.sbs-step.active .sbs-step-num {
    background: var(--sbs-gold);
    border-color: var(--sbs-gold);
    color: var(--sbs-white);
    box-shadow: 0 0 0 4px var(--sbs-gold-pale);
}

.sbs-step.done .sbs-step-num {
    background: var(--sbs-brown-light);
    border-color: var(--sbs-brown-light);
    color: var(--sbs-white);
}

.sbs-step-label {
    font-size: 10px;
    letter-spacing: .06em;
    color: var(--sbs-brown-light);
    font-family: 'Noto Serif JP', serif;
}

.sbs-step.active .sbs-step-label {
    color: var(--sbs-gold);
    font-weight: 500;
}

.sbs-step.done .sbs-step-label { color: var(--sbs-brown-mid); }

.sbs-step-line {
    flex: 1;
    height: 1px;
    background: var(--sbs-line);
    max-width: 64px;
    margin-bottom: 22px;
}

/* Panels */
.sbs-panel { display: none; }
.sbs-panel.active { display: block; }

#sbs-panel-1,
#sbs-panel-2,
#sbs-panel-3,
#sbs-panel-4 {
    background: var(--sbs-white);
    border-radius: 14px;
    border: 1px solid var(--sbs-line);
    padding: 32px 28px;
    box-shadow: var(--sbs-shadow);
}

#sbs-panel-5 {
    background: var(--sbs-white);
    border-radius: 14px;
    border: 1px solid var(--sbs-line);
    box-shadow: var(--sbs-shadow);
}

#sbs-panel-3 h3,
#sbs-panel-4 h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: .95em;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .08em;
    margin: 24px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--sbs-line);
}

#sbs-panel-3 h3:first-of-type { margin-top: 0; }

/* Calendar nav */
.sbs-cal-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

#sbs-month-label {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.1em;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .06em;
    min-width: 140px;
    text-align: center;
}

.sbs-nav-btn {
    width: 36px;
    height: 36px;
    background: var(--sbs-white);
    border: 1px solid var(--sbs-line);
    border-radius: 50%;
    font-size: 1.3em;
    cursor: pointer;
    color: var(--sbs-brown-mid);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
    line-height: 1;
}

.sbs-nav-btn:hover {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold-light);
    color: var(--sbs-gold);
}

.sbs-nav-btn:disabled { opacity: .3; cursor: default; }

/* Legend */
.sbs-legend {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 12px;
    color: var(--sbs-brown-mid);
    letter-spacing: .04em;
}

.sbs-legend span { display: flex; align-items: center; gap: 4px; }
.sbs-icon-open   { color: var(--sbs-gold); }
.sbs-icon-almost { color: var(--sbs-rose); }
.sbs-icon-closed { color: var(--sbs-line); }

/* Calendar table */
.sbs-calendar {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 2px;
    table-layout: fixed;
}

.sbs-calendar th {
    text-align: center;
    padding: 6px 0 10px;
    font-size: 12px;
    color: var(--sbs-brown-mid);
    font-weight: 400;
    letter-spacing: .06em;
    font-family: 'Noto Serif JP', serif;
}

.sbs-calendar th.sbs-sun { color: var(--sbs-rose); }
.sbs-calendar th.sbs-sat { color: var(--sbs-gold); }

.sbs-calendar td {
    text-align: center;
    padding: 3px;
    vertical-align: top;
}

.sbs-day {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 7px 4px;
    border-radius: 8px;
    cursor: pointer;
    min-height: 54px;
    justify-content: center;
    border: 1px solid transparent;
    transition: all .2s ease;
    background: transparent;
}

.sbs-day:hover:not(.sbs-day-disabled) {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold-light);
}

.sbs-day.sbs-day-selected {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold);
}

.sbs-day-disabled { cursor: default; opacity: .38; }
.sbs-day-past     { cursor: default; opacity: .28; }

.sbs-day-num {
    font-size: 14px;
    font-weight: 400;
    line-height: 1;
    color: var(--sbs-brown);
}

.sbs-day.sbs-day-selected .sbs-day-num { font-weight: 600; color: var(--sbs-gold); }

.sbs-day-icon {
    font-size: 13px;
    margin-top: 3px;
    line-height: 1;
}

.sbs-day-open    .sbs-day-icon { color: var(--sbs-gold); }
.sbs-day-almost  .sbs-day-icon { color: var(--sbs-rose); }
.sbs-day-full    .sbs-day-icon,
.sbs-day-blocked .sbs-day-icon,
.sbs-day-closed  .sbs-day-icon { color: var(--sbs-line); }

.sbs-day-sun .sbs-day-num { color: var(--sbs-rose); }
.sbs-day-sat .sbs-day-num { color: var(--sbs-gold); }
.sbs-day-sun.sbs-day-selected .sbs-day-num,
.sbs-day-sat.sbs-day-selected .sbs-day-num { color: var(--sbs-gold); }

/* Slot date title */
#sbs-slot-date-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.05em;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .06em;
    margin-bottom: 6px;
}

#sbs-panel-2 > p {
    font-size: 12px;
    color: var(--sbs-brown-mid);
    margin-bottom: 20px;
    letter-spacing: .03em;
}

/* Slots grid */
.sbs-slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
    margin-bottom: 24px;
}

.sbs-slot {
    border: 1px solid var(--sbs-line);
    border-radius: 8px;
    padding: 12px 8px;
    cursor: pointer;
    text-align: center;
    transition: all .2s ease;
    background: var(--sbs-white);
}

.sbs-slot:hover:not(.sbs-slot-disabled) {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold-light);
    transform: translateY(-1px);
    box-shadow: 0 3px 12px rgba(196,151,74,.15);
}

.sbs-slot.sbs-slot-selected {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold);
    box-shadow: 0 0 0 2px rgba(196,151,74,.25);
}

.sbs-slot-disabled { opacity: .35; cursor: default; }

.sbs-slot-time {
    font-size: 14px;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .04em;
}

.sbs-slot.sbs-slot-selected .sbs-slot-time {
    color: var(--sbs-gold);
    font-weight: 600;
}

/* Form */
.sbs-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 8px;
}

@media (max-width: 540px) { .sbs-form-grid { grid-template-columns: 1fr; } }

.sbs-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.sbs-field label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .08em;
    color: var(--sbs-brown-mid);
    font-family: 'Noto Serif JP', serif;
}

.sbs-req { color: var(--sbs-rose); margin-left: 2px; }

.sbs-field input,
.sbs-field select,
.sbs-field textarea {
    width: 100%;
    border: 1px solid var(--sbs-line);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--sbs-brown);
    box-sizing: border-box;
    transition: border-color .2s, box-shadow .2s;
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--sbs-white);
    -webkit-appearance: none;
    appearance: none;
}

.sbs-field input::placeholder {
    color: var(--sbs-brown-light);
    font-size: 13px;
}

.sbs-field input:focus,
.sbs-field select:focus {
    outline: none;
    border-color: var(--sbs-gold-light);
    box-shadow: 0 0 0 3px rgba(196,151,74,.12);
}

.sbs-field.sbs-has-error input,
.sbs-field.sbs-has-error select {
    border-color: var(--sbs-rose);
    box-shadow: 0 0 0 3px rgba(200,135,138,.1);
}

.sbs-field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B8A898' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

.sbs-people-row {
    grid-template-columns: 1fr 1fr;
    max-width: 320px;
}

/* Services */
.sbs-service-group {
    margin-bottom: 16px;
    padding: 16px;
    background: var(--sbs-cream);
    border-radius: 8px;
    border: 1px solid var(--sbs-line);
}

.sbs-service-group h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .1em;
    color: var(--sbs-brown-mid);
    margin: 0 0 12px;
    text-transform: uppercase;
}

.sbs-service-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sbs-service-option {
    display: flex;
    align-items: center;
    padding: 7px 16px;
    border: 1px solid var(--sbs-line);
    border-radius: 50px;
    cursor: pointer;
    font-size: 13px;
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--sbs-brown-mid);
    transition: all .2s ease;
    background: var(--sbs-white);
    user-select: none;
    letter-spacing: .02em;
}

.sbs-service-option:hover {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold-light);
    color: var(--sbs-brown);
}

.sbs-service-option.checked {
    background: var(--sbs-gold-pale);
    border-color: var(--sbs-gold);
    color: var(--sbs-gold);
    font-weight: 500;
}

.sbs-service-option input { display: none; }

/* Buttons */
.sbs-form-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    align-items: center;
    justify-content: center;
}

.sbs-btn {
    padding: 11px 32px;
    border-radius: 50px;
    border: 1px solid var(--sbs-line);
    font-size: 13px;
    font-weight: 400;
    letter-spacing: .08em;
    cursor: pointer;
    transition: all .25s ease;
    font-family: 'Noto Sans JP', sans-serif;
    min-width: 120px;
    text-align: center;
    display: inline-block;
}

.sbs-btn-primary {
    background: var(--sbs-gold);
    border-color: var(--sbs-gold);
    color: var(--sbs-white);
}

.sbs-btn-primary:hover {
    background: #B5883E;
    border-color: #B5883E;
    box-shadow: 0 4px 16px rgba(196,151,74,.35);
    transform: translateY(-1px);
}

.sbs-btn-back {
    background: transparent;
    border-color: var(--sbs-line);
    color: var(--sbs-brown-mid);
}

.sbs-btn-back:hover {
    background: var(--sbs-cream-deep);
    border-color: var(--sbs-brown-light);
    color: var(--sbs-brown);
}

.sbs-btn-submit {
    background: var(--sbs-brown);
    border-color: var(--sbs-brown);
    color: var(--sbs-white);
    padding: 11px 40px;
}

.sbs-btn-submit:hover {
    background: #2C1E12;
    box-shadow: 0 4px 16px rgba(61,44,30,.3);
    transform: translateY(-1px);
}

.sbs-btn:disabled { opacity: .45; cursor: default; transform: none !important; box-shadow: none !important; }

/* Summary */
.sbs-summary-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.sbs-summary-table tr { border-bottom: 1px solid var(--sbs-line); }
.sbs-summary-table tr:last-child { border-bottom: none; }

.sbs-summary-table th {
    width: 36%;
    text-align: left;
    padding: 10px 4px;
    color: var(--sbs-brown-light);
    font-weight: 400;
    font-family: 'Noto Serif JP', serif;
    letter-spacing: .05em;
    font-size: 12px;
}

.sbs-summary-table td {
    padding: 10px 4px;
    color: var(--sbs-brown);
    font-size: 13px;
    font-weight: 500;
}

/* Policy box */
.sbs-policy-box {
    background: var(--sbs-cream);
    border: 1px solid var(--sbs-line);
    border-left: 3px solid var(--sbs-gold-light);
    border-radius: 0 8px 8px 0;
    padding: 14px 16px;
    margin-bottom: 20px;
    font-size: 12px;
    color: var(--sbs-brown-mid);
    line-height: 1.7;
    letter-spacing: .03em;
}

.sbs-policy-box h4 {
    margin: 0 0 6px;
    font-size: 11px;
    font-family: 'Noto Serif JP', serif;
    letter-spacing: .1em;
    color: var(--sbs-brown-mid);
    font-weight: 500;
    text-transform: uppercase;
}

.sbs-warning {
    font-size: 11px;
    color: var(--sbs-rose);
    letter-spacing: .03em;
    margin-bottom: 16px;
    text-align: center;
    opacity: .85;
}

/* Success */
.sbs-success-box {
    text-align: center;
    padding: 56px 32px;
}

.sbs-success-icon {
    width: 72px;
    height: 72px;
    background: var(--sbs-gold-pale);
    border: 2px solid var(--sbs-gold-light);
    color: var(--sbs-gold);
    border-radius: 50%;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.sbs-success-box h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.25em;
    font-weight: 500;
    color: var(--sbs-brown);
    letter-spacing: .1em;
    margin-bottom: 12px;
}

.sbs-success-box p {
    font-size: 13px;
    color: var(--sbs-brown-mid);
    line-height: 1.9;
    letter-spacing: .04em;
    margin: 6px 0;
}

.sbs-success-box strong {
    color: var(--sbs-gold);
    font-weight: 600;
    letter-spacing: .06em;
}

/* Errors */
.sbs-error {
    color: var(--sbs-rose);
    font-size: 12px;
    padding: 10px 14px;
    background: var(--sbs-rose-pale);
    border-radius: 8px;
    border: 1px solid rgba(200,135,138,.25);
    margin-top: 10px;
    letter-spacing: .03em;
}

.sbs-err {
    display: block;
    color: var(--sbs-rose);
    font-size: 11px;
    margin-top: 4px;
    letter-spacing: .03em;
}

.sbs-loading {
    text-align: center;
    color: var(--sbs-brown-light);
    padding: 24px;
    font-size: 13px;
    letter-spacing: .06em;
    font-family: 'Noto Serif JP', serif;
}

/* Mobile */
@media (max-width: 600px) {
    #sbs-panel-1,
    #sbs-panel-2,
    #sbs-panel-3,
    #sbs-panel-4 { padding: 24px 16px; }

    .sbs-steps { margin: 24px auto 28px; }
    .sbs-step-label { font-size: 9px; }
    .sbs-step-line { max-width: 32px; }

    .sbs-slots-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .sbs-slot { padding: 10px 4px; }
    .sbs-slot-time { font-size: 13px; }

    .sbs-form-actions { flex-direction: column-reverse; gap: 8px; }
    .sbs-btn { width: 100%; }
    .sbs-people-row { max-width: 100%; }
}

@media (max-width: 400px) {
    .sbs-step-label { display: none; }
    .sbs-slots-grid { grid-template-columns: repeat(2, 1fr); }
}