/* ============================================
   MSS BOOKING SYSTEM v3.1 — CSS
   THREE THEMES: teal (default), chrome, clear
   Set via [mss_booking style="teal|chrome|clear"]
   ============================================ */


/* ============================================
   THEME: TEAL (default)
   ============================================ */
.mss-booking[data-theme="teal"] {
    --mss-glass-bg: rgba(255, 255, 255, 0.07);
    --mss-glass-border: rgba(255, 255, 255, 0.18);
    --mss-glass-shadow: 0 8px 32px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.25), inset 0 -1px 0 rgba(255,255,255,0.05), inset 0 0 40px 10px rgba(255,255,255,0.02);
    --mss-glass-blur: 20px;
    --mss-glass-saturate: 156%;
    --mss-glass-radius: 20px;
    --mss-container-bg: linear-gradient(160deg, #0a1628 0%, #0d2137 40%, #0a1a2e 100%);
    --mss-accent: #2dd4bf;
    --mss-accent-glow: rgba(45, 212, 191, 0.3);
    --mss-orb1: radial-gradient(circle at 20% 30%, rgba(45,212,191,0.18) 0%, transparent 50%);
    --mss-orb2: radial-gradient(circle at 80% 70%, rgba(6,182,212,0.14) 0%, transparent 50%);
    --mss-orb3: radial-gradient(circle at 50% 90%, rgba(16,185,129,0.1) 0%, transparent 40%);
    --mss-card-bg: rgba(255,255,255,0.05);
    --mss-card-bg-hover: rgba(255,255,255,0.09);
    --mss-card-bg-selected: rgba(45,212,191,0.12);
    --mss-card-border-selected: 1px solid rgba(45,212,191,0.45);
    --mss-card-shadow-selected: 0 6px 24px rgba(45,212,191,0.15);
    --mss-accordion-bg: rgba(255,255,255,0.05);
    --mss-accordion-bg-hover: rgba(255,255,255,0.08);
    --mss-accordion-bg-open: rgba(255,255,255,0.1);
    --mss-cal-day-bg-selected: rgba(45,212,191,0.5);
    --mss-cal-selected-shadow: 0 0 12px rgba(45,212,191,0.4);
    --mss-cal-selected-border: 1px solid rgba(45,212,191,0.6);
    --mss-btn-bg: rgba(255,255,255,0.08);
    --mss-btn-bg-hover: rgba(255,255,255,0.14);
    --mss-progress-fill-bg: linear-gradient(90deg, #2dd4bf, #06b6d4);
    --mss-progress-step-bg-active: rgba(45,212,191,0.5);
    --mss-toggle-bg-checked: rgba(45,212,191,0.5);
}

/* ============================================
   THEME: CHROME
   ============================================ */
.mss-booking[data-theme="chrome"] {
    --mss-glass-bg: rgba(255,255,255,0.09);
    --mss-glass-border: rgba(255,255,255,0.2);
    --mss-glass-shadow: 0 8px 32px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.3), inset 0 -1px 0 rgba(255,255,255,0.06), inset 0 0 40px 10px rgba(255,255,255,0.02);
    --mss-glass-blur: 20px;
    --mss-glass-saturate: 156%;
    --mss-glass-radius: 20px;
    --mss-container-bg: linear-gradient(160deg, #1a1c24 0%, #2a2d38 40%, #1a1c24 100%);
    --mss-accent: #a8b4c4;
    --mss-accent-glow: rgba(168,180,196,0.25);
    --mss-orb1: radial-gradient(circle at 25% 25%, rgba(180,200,230,0.14) 0%, transparent 50%);
    --mss-orb2: radial-gradient(circle at 75% 65%, rgba(140,160,200,0.12) 0%, transparent 50%);
    --mss-orb3: radial-gradient(circle at 40% 85%, rgba(200,210,230,0.08) 0%, transparent 40%);
    --mss-card-bg: rgba(255,255,255,0.05);
    --mss-card-bg-hover: rgba(255,255,255,0.09);
    --mss-card-bg-selected: rgba(168,180,196,0.12);
    --mss-card-border-selected: 1px solid rgba(180,190,210,0.45);
    --mss-card-shadow-selected: 0 6px 24px rgba(150,160,180,0.15);
    --mss-accordion-bg: rgba(255,255,255,0.05);
    --mss-accordion-bg-hover: rgba(255,255,255,0.08);
    --mss-accordion-bg-open: rgba(255,255,255,0.1);
    --mss-cal-day-bg-selected: rgba(160,170,200,0.45);
    --mss-cal-selected-shadow: 0 0 12px rgba(160,170,200,0.3);
    --mss-cal-selected-border: 1px solid rgba(180,190,210,0.5);
    --mss-btn-bg: rgba(255,255,255,0.08);
    --mss-btn-bg-hover: rgba(255,255,255,0.14);
    --mss-progress-fill-bg: linear-gradient(90deg, #94a3b8, #cbd5e1);
    --mss-progress-step-bg-active: rgba(148,163,184,0.5);
    --mss-toggle-bg-checked: rgba(148,163,184,0.5);
}

/* ============================================
   THEME: CLEAR
   ============================================ */
.mss-booking[data-theme="clear"] {
    --mss-glass-bg: rgba(255,255,255,0.06);
    --mss-glass-border: rgba(255,255,255,0.15);
    --mss-glass-shadow: 0 8px 32px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.2), inset 0 -1px 0 rgba(255,255,255,0.04), inset 0 0 40px 10px rgba(255,255,255,0.015);
    --mss-glass-blur: 24px;
    --mss-glass-saturate: 150%;
    --mss-glass-radius: 20px;
    --mss-container-bg: linear-gradient(160deg, #0f172a 0%, #1e293b 40%, #0f172a 100%);
    --mss-accent: #60a5fa;
    --mss-accent-glow: rgba(96,165,250,0.25);
    --mss-orb1: radial-gradient(circle at 15% 40%, rgba(96,165,250,0.16) 0%, transparent 50%);
    --mss-orb2: radial-gradient(circle at 85% 60%, rgba(99,102,241,0.14) 0%, transparent 50%);
    --mss-orb3: radial-gradient(circle at 55% 85%, rgba(139,92,246,0.1) 0%, transparent 40%);
    --mss-card-bg: rgba(255,255,255,0.04);
    --mss-card-bg-hover: rgba(255,255,255,0.08);
    --mss-card-bg-selected: rgba(96,165,250,0.1);
    --mss-card-border-selected: 1px solid rgba(96,165,250,0.4);
    --mss-card-shadow-selected: 0 4px 16px rgba(96,165,250,0.15);
    --mss-accordion-bg: rgba(255,255,255,0.04);
    --mss-accordion-bg-hover: rgba(255,255,255,0.07);
    --mss-accordion-bg-open: rgba(255,255,255,0.09);
    --mss-cal-day-bg-selected: rgba(96,165,250,0.35);
    --mss-cal-selected-shadow: 0 0 12px rgba(96,165,250,0.3);
    --mss-cal-selected-border: 1px solid rgba(96,165,250,0.5);
    --mss-btn-bg: rgba(255,255,255,0.07);
    --mss-btn-bg-hover: rgba(255,255,255,0.12);
    --mss-progress-fill-bg: linear-gradient(90deg, #3b82f6, #6366f1);
    --mss-progress-step-bg-active: rgba(96,165,250,0.4);
    --mss-toggle-bg-checked: rgba(96,165,250,0.4);
}


/* ============================================
   SHARED DEFAULTS
   ============================================ */
.mss-booking {
    --mss-glass-bg: rgba(255,255,255,0.07);
    --mss-glass-border: rgba(255,255,255,0.18);
    --mss-glass-shadow: 0 8px 32px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.25), inset 0 -1px 0 rgba(255,255,255,0.05), inset 0 0 40px 10px rgba(255,255,255,0.02);
    --mss-glass-blur: 20px;
    --mss-glass-saturate: 156%;
    --mss-glass-radius: 20px;
    --mss-container-bg: linear-gradient(160deg, #0a1628 0%, #0d2137 40%, #0a1a2e 100%);
    --mss-accent: #2dd4bf;
    --mss-accent-glow: rgba(45,212,191,0.3);
    --mss-orb1: radial-gradient(circle at 20% 30%, rgba(45,212,191,0.18) 0%, transparent 50%);
    --mss-orb2: radial-gradient(circle at 80% 70%, rgba(6,182,212,0.14) 0%, transparent 50%);
    --mss-orb3: radial-gradient(circle at 50% 90%, rgba(16,185,129,0.1) 0%, transparent 40%);

    --mss-container-padding: 20px;
    --mss-container-max-width: 860px;
    --mss-container-radius: 24px;
    --mss-container-border: 1px solid rgba(255,255,255,0.08);

    --mss-font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --mss-color-title: #f1f5f9;
    --mss-color-subtitle: #94a3b8;
    --mss-color-body: #cbd5e1;
    --mss-color-price: #4ade80;

    --mss-card-border: 1px solid rgba(255,255,255,0.1);
    --mss-card-border-hover: 1px solid rgba(255,255,255,0.25);
    --mss-card-shadow: 0 4px 16px rgba(0,0,0,0.15);
    --mss-card-shadow-hover: 0 8px 24px rgba(0,0,0,0.25);
    --mss-card-radius: 12px;

    --mss-accordion-border: 1px solid rgba(255,255,255,0.12);
    --mss-accordion-radius: 12px;
    --mss-accordion-color: #e2e8f0;
    --mss-accordion-body-bg: rgba(0,0,0,0.1);
    --mss-accordion-series-color: #64748b;

    --mss-cal-bg: rgba(255,255,255,0.03);
    --mss-cal-border: 1px solid rgba(255,255,255,0.08);
    --mss-cal-radius: 14px;
    --mss-cal-day-bg: rgba(255,255,255,0.04);
    --mss-cal-day-bg-hover: rgba(255,255,255,0.1);
    --mss-cal-day-bg-booked: rgba(50,50,50,0.3);
    --mss-cal-day-color: #cbd5e1;
    --mss-cal-day-color-selected: #fff;
    --mss-cal-day-color-booked: #475569;
    --mss-cal-day-radius: 8px;
    --mss-cal-day-size: 32px;
    --mss-cal-gap: 4px;
    --mss-cal-nav-bg: rgba(255,255,255,0.06);
    --mss-cal-nav-bg-hover: rgba(255,255,255,0.12);
    --mss-cal-nav-color: #e2e8f0;
    --mss-cal-title-color: #e2e8f0;
    --mss-cal-weekday-color: #64748b;
    --mss-cal-today-border: 1px solid rgba(251,191,36,0.4);

    --mss-input-bg: rgba(0,0,0,0.2);
    --mss-input-bg-focus: rgba(0,0,0,0.3);
    --mss-input-border: 1px solid rgba(255,255,255,0.1);
    --mss-input-border-focus: 1px solid var(--mss-accent, rgba(100,160,255,0.5));
    --mss-input-border-error: 1px solid rgba(239,68,68,0.6);
    --mss-input-radius: 10px;
    --mss-input-padding: 10px 14px;
    --mss-input-color: #f1f5f9;
    --mss-input-placeholder: #64748b;
    --mss-input-focus-shadow: 0 0 0 3px var(--mss-accent-glow, rgba(59,130,246,0.15));
    --mss-input-label-color: #94a3b8;

    --mss-btn-padding: 10px 22px;
    --mss-btn-radius: 10px;
    --mss-btn-color: #e2e8f0;
    --mss-btn-shadow: 0 4px 12px rgba(0,0,0,0.2);
    --mss-btn-shadow-hover: 0 6px 20px rgba(0,0,0,0.3);
    --mss-btn-back-bg: transparent;
    --mss-btn-back-border: rgba(255,255,255,0.1);
    --mss-btn-confirm-bg: linear-gradient(135deg, rgba(34,120,60,0.7) 0%, rgba(22,100,50,0.8) 100%);
    --mss-btn-confirm-bg-hover: linear-gradient(135deg, rgba(40,140,70,0.8) 0%, rgba(30,120,58,0.9) 100%);
    --mss-btn-confirm-shadow: 0 4px 16px rgba(34,197,94,0.2);

    --mss-badge-bg: rgba(251,146,60,0.2);
    --mss-badge-color: #fb923c;
    --mss-badge-border: 1px solid rgba(251,146,60,0.3);
    --mss-free-color: #4ade80;

    --mss-progress-track-bg: rgba(255,255,255,0.06);
    --mss-progress-track-height: 4px;
    --mss-progress-step-bg: rgba(255,255,255,0.06);
    --mss-progress-step-bg-done: rgba(34,197,94,0.5);
    --mss-progress-step-size: 28px;
    --mss-progress-step-color: #64748b;
    --mss-progress-step-active-color: #fff;

    --mss-summary-bg: rgba(255,255,255,0.03);
    --mss-summary-border: 1px solid rgba(255,255,255,0.08);
    --mss-summary-label-color: #64748b;
    --mss-summary-value-color: #e2e8f0;
    --mss-summary-total-bg: rgba(255,255,255,0.04);

    --mss-success-icon-bg: rgba(34,197,94,0.15);
    --mss-success-icon-color: #4ade80;
    --mss-success-icon-border: 2px solid rgba(34,197,94,0.3);

    --mss-toggle-bg: rgba(255,255,255,0.06);
    --mss-toggle-width: 48px;
    --mss-toggle-height: 26px;
    --mss-toggle-knob-size: 20px;
    --mss-toggle-knob-color: #cbd5e1;

    --mss-legend-available-color: #4ade80;
    --mss-legend-booked-color: #475569;
    --mss-legend-selected-color: var(--mss-accent, #3b82f6);
    --mss-error-color: #ef4444;
    --mss-loading-bg: rgba(0,0,0,0.6);
    --mss-spinner-color: var(--mss-accent, #3b82f6);
}


/* ============================================
   CONTAINER
   ============================================ */
.mss-booking {
    background: var(--mss-container-bg);
    max-width: var(--mss-container-max-width);
    margin: 20px auto;
    padding: var(--mss-container-padding);
    border-radius: var(--mss-container-radius);
    border: var(--mss-container-border);
    font-family: var(--mss-font-family);
    color: var(--mss-color-body);
    position: relative;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}
.mss-booking::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--mss-orb1), var(--mss-orb2), var(--mss-orb3);
    pointer-events: none;
    z-index: 0;
}
.mss-booking > * { position: relative; z-index: 1; }
.mss-booking *, .mss-booking *::before, .mss-booking *::after { box-sizing: border-box; }


/* ============================================
   STEP TRANSITIONS — fixed height container
   All panels absolute. Active panel measured by JS
   to set wrapper height. Panels crossfade in place.
   ============================================ */
.mss-panels-wrap {
    position: relative;
    overflow: hidden;
    transition: height 0.4s ease;
}
.mss-panel.mss-step-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s ease;
}
.mss-panel.mss-step-panel.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}


/* ============================================
   PROGRESS BAR
   ============================================ */
.mss-progress-bar { margin-bottom: 16px; }
.mss-progress-track {
    height: var(--mss-progress-track-height);
    background: var(--mss-progress-track-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}
.mss-progress-fill {
    height: 100%;
    background: var(--mss-progress-fill-bg);
    border-radius: 4px;
    transition: width 0.5s ease;
}
.mss-steps { display: flex; justify-content: space-between; }
.mss-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1;
}
.mss-step-num {
    width: var(--mss-progress-step-size);
    height: var(--mss-progress-step-size);
    border-radius: 50%;
    background: var(--mss-progress-step-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85em;
    color: var(--mss-progress-step-color);
    transition: all 0.3s;
    border: 1px solid rgba(255,255,255,0.05);
}
.mss-step.active .mss-step-num {
    background: var(--mss-progress-step-bg-active);
    color: var(--mss-progress-step-active-color);
    border-color: var(--mss-accent);
}
.mss-step.done .mss-step-num { background: var(--mss-progress-step-bg-done); color: #fff; }
.mss-step-label { font-size: 0.75em; color: var(--mss-progress-step-color); transition: color 0.3s; }
.mss-step.active .mss-step-label { color: var(--mss-color-title); }
.mss-step.done .mss-step-label { color: var(--mss-color-subtitle); }


/* ============================================
   PANELS (glassmorphism)
   ============================================ */
.mss-panel {
    background: var(--mss-glass-bg);
    backdrop-filter: blur(var(--mss-glass-blur)) saturate(var(--mss-glass-saturate, 156%));
    -webkit-backdrop-filter: blur(var(--mss-glass-blur)) saturate(var(--mss-glass-saturate, 156%));
    border: 1px solid var(--mss-glass-border);
    border-radius: var(--mss-glass-radius);
    box-shadow: var(--mss-glass-shadow);
    padding: 20px 24px;
    position: relative;
    overflow: hidden;
}
.mss-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 5%, rgba(255,255,255,0.5) 30%, rgba(255,255,255,0.7) 50%, rgba(255,255,255,0.5) 70%, transparent 95%);
    pointer-events: none;
    z-index: 1;
}
.mss-panel::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 1px; height: 100%;
    background: linear-gradient(180deg, rgba(255,255,255,0.6) 0%, rgba(255,255,255,0.15) 40%, transparent 70%, rgba(255,255,255,0.15) 100%);
    pointer-events: none;
    z-index: 1;
}
.mss-panel-title { font-size: 1.25em; font-weight: 700; color: var(--mss-color-title); margin: 0 0 4px; }
.mss-panel-subtitle { font-size: 0.85em; color: var(--mss-color-subtitle); margin: 0 0 16px; }


/* ============================================
   STAGE MESSAGES
   ============================================ */
.mss-stage-message {
    margin-top: 12px;
    padding: 8px 12px;
    font-size: 0.82em;
    color: var(--mss-color-subtitle);
    border-left: 3px solid var(--mss-accent);
    background: rgba(255,255,255,0.03);
    border-radius: 0 8px 8px 0;
    line-height: 1.5;
}
.mss-stage-message:empty { display: none; }


/* ============================================
   SECOND UNIT BANNER
   ============================================ */
.mss-unit-banner {
    background: linear-gradient(135deg, rgba(251,146,60,0.2), rgba(251,146,60,0.1));
    border: 1px solid rgba(251,146,60,0.4);
    border-radius: 10px;
    padding: 10px 16px;
    margin-bottom: 14px;
    text-align: center;
    font-weight: 700;
    color: #fb923c;
    font-size: 0.95em;
    letter-spacing: 1px;
}
.mss-unit-banner:empty { display: none; }


/* ============================================
   BRAND ACCORDIONS
   ============================================ */
.mss-brand-accordion { margin-bottom: 8px; }
.mss-brand-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--mss-accordion-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--mss-accordion-border);
    border-radius: var(--mss-accordion-radius);
    color: var(--mss-accordion-color);
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    font-family: inherit;
}
.mss-brand-header:hover { background: var(--mss-accordion-bg-hover); }
.mss-brand-header.open {
    background: var(--mss-accordion-bg-open);
    border-radius: var(--mss-accordion-radius) var(--mss-accordion-radius) 0 0;
}
.mss-chevron { transition: transform 0.3s; font-size: 0.8em; opacity: 0.5; }
.mss-brand-header.open .mss-chevron { transform: rotate(180deg); }
.mss-brand-body {
    overflow: hidden;
    transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
    background: var(--mss-accordion-body-bg);
    border-radius: 0 0 var(--mss-accordion-radius) var(--mss-accordion-radius);
    padding: 0 12px;
    height: 0;
}
.mss-brand-body.open {
    padding: 10px 12px;
    /* height set by JS — NO max-height */
}
.mss-brand-series {
    font-size: 0.72em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mss-accordion-series-color);
    margin: 4px 0;
    padding-bottom: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}


/* ============================================
   PRODUCT CARDS
   ============================================ */
.mss-product-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--mss-card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--mss-card-border);
    border-radius: var(--mss-card-radius);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--mss-card-shadow);
    margin-bottom: 6px;
}
.mss-product-card:hover {
    background: var(--mss-card-bg-hover);
    border: var(--mss-card-border-hover);
    box-shadow: var(--mss-card-shadow-hover);
}
.mss-product-card.selected {
    background: var(--mss-card-bg-selected);
    border: var(--mss-card-border-selected);
    box-shadow: var(--mss-card-shadow-selected);
}
/* Dim non-selected cards when a selection exists */
.mss-product-card.dimmed {
    opacity: 0.2;
    pointer-events: auto;
}
.mss-product-card.dimmed:hover { opacity: 0.5; }

.mss-card-img {
    width: 56px; height: 56px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    flex-shrink: 0;
}
.mss-card-content { flex: 1; min-width: 0; }
.mss-card-name { font-size: 0.92em; font-weight: 600; color: var(--mss-color-title); }
.mss-card-desc { font-size: 0.78em; color: var(--mss-color-subtitle); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mss-card-price { font-size: 1.15em; font-weight: 700; color: var(--mss-color-price); white-space: nowrap; margin-left: 8px; flex-shrink: 0; }


/* ============================================
   INSTALL TYPE GRID
   ============================================ */
/* Install layout: grid + preview side by side */
.mss-install-layout {
    display: flex;
    gap: 14px;
    margin-bottom: 14px;
    align-items: flex-start;
}
.mss-install-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    flex: 1;
    min-width: 0;
}
.mss-install-card {
    text-align: center;
    padding: 0;
    background: var(--mss-card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--mss-card-border);
    border-radius: var(--mss-card-radius);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.mss-install-card:hover {
    background: var(--mss-card-bg-hover);
    border: var(--mss-card-border-hover);
    transform: translateY(-2px);
}
.mss-install-card.selected {
    background: var(--mss-card-bg-selected);
    border: var(--mss-card-border-selected);
    box-shadow: var(--mss-card-shadow-selected);
}
.mss-install-card.dimmed { opacity: 0.2; pointer-events: auto; }
.mss-install-card.dimmed:hover { opacity: 0.5; }

/* Image fills top half of card */
.mss-install-img-wrap {
    width: 100%;
    height: 110px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.03);
}
.mss-install-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    margin: 0;
    display: block;
}
.mss-install-img.placeholder {
    background: rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    color: #475569;
    font-weight: 700;
    width: 100%;
    height: 100%;
}

/* Text section below image */
.mss-install-text {
    padding: 10px 10px 14px;
    text-align: center;
}
.mss-install-label { font-weight: 700; color: var(--mss-color-title); font-size: 0.9em; margin-bottom: 4px; }
.mss-install-desc { font-size: 0.72em; color: var(--mss-color-subtitle); line-height: 1.3; margin-bottom: 8px; }
.mss-install-surcharge { display: inline-block; padding: 4px 10px; background: var(--mss-badge-bg); color: var(--mss-badge-color); border: var(--mss-badge-border); border-radius: 6px; font-weight: 600; font-size: 0.85em; }
.mss-install-free { color: var(--mss-free-color); font-weight: 600; font-size: 0.85em; }

/* Expanded preview panel */
.mss-install-preview {
    flex: 0 0 0;
    max-width: 0;
    overflow: hidden;
    opacity: 0;
    transition: flex-basis 0.4s ease, max-width 0.4s ease, opacity 0.3s ease, padding 0.4s ease;
    background: rgba(10, 20, 40, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--mss-card-radius);
    border: 1px solid rgba(0, 255, 200, 0.25);
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 2px 12px rgba(0, 255, 200, 0.15);
    padding: 0;
}
.mss-install-preview.visible {
    flex: 0 0 45%;
    max-width: 45%;
    opacity: 1;
    padding: 12px;
}
.mss-install-preview-img {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
    display: block;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}
.mss-install-preview-label {
    color: var(--mss-color-subtitle);
    font-size: 0.8em;
    text-align: center;
    margin-top: 10px;
    line-height: 1.4;
}
.mss-install-preview-close {
    position: absolute;
    top: 8px;
    right: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1.2em;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    line-height: 1;
    padding: 0;
}
.mss-install-preview-close:hover {
    background: rgba(255, 80, 80, 0.4);
}

/* Upstairs + multi-unit toggles */
.mss-upstairs-toggle,
.mss-multi-unit-toggle {
    margin: 14px 0;
    padding: 12px 16px;
    background: var(--mss-card-bg);
    border: var(--mss-card-border);
    border-radius: var(--mss-card-radius);
}
.mss-multi-unit-toggle { margin-top: 0; }
.mss-glass-toggle {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    user-select: none;
}
.mss-glass-toggle input { display: none; }
.mss-toggle-slider {
    width: var(--mss-toggle-width);
    height: var(--mss-toggle-height);
    background: var(--mss-toggle-bg);
    border-radius: 999px;
    position: relative;
    transition: background 0.3s;
    flex-shrink: 0;
}
.mss-toggle-slider::after {
    content: '';
    position: absolute;
    width: var(--mss-toggle-knob-size);
    height: var(--mss-toggle-knob-size);
    border-radius: 50%;
    background: var(--mss-toggle-knob-color);
    top: 50%;
    left: 3px;
    transform: translateY(-50%);
    transition: all 0.3s;
}
.mss-glass-toggle input:checked + .mss-toggle-slider { background: var(--mss-toggle-bg-checked); }
.mss-glass-toggle input:checked + .mss-toggle-slider::after { left: calc(100% - var(--mss-toggle-knob-size) - 3px); background: #fff; }
.mss-toggle-text { color: var(--mss-color-body); font-size: 0.95em; font-weight: 500; }


/* ============================================
   CALENDAR
   ============================================ */
.mss-calendar-wrap {
    background: var(--mss-cal-bg);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    border: var(--mss-cal-border);
    border-radius: var(--mss-cal-radius);
    padding: 12px;
    margin-bottom: 10px;
}
.mss-cal-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.mss-cal-nav-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: var(--mss-cal-nav-bg);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    color: var(--mss-cal-nav-color);
    font-size: 1.3em;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.mss-cal-nav-btn:hover { background: var(--mss-cal-nav-bg-hover); }
.mss-cal-nav-btn:disabled { opacity: 0.25; cursor: not-allowed; }
.mss-cal-nav-btn:disabled:hover { background: var(--mss-cal-nav-bg); }
.mss-cal-title { font-weight: 600; font-size: 1.05em; color: var(--mss-cal-title-color); }
.mss-cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: var(--mss-cal-gap, 4px); }
.mss-cal-weekday { text-align: center; font-size: 0.75em; font-weight: 600; color: var(--mss-cal-weekday-color); padding: 4px 0; text-transform: uppercase; letter-spacing: 0.5px; }
.mss-cal-day {
    height: var(--mss-cal-day-size);
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--mss-cal-day-radius);
    font: 500 0.82em/1 var(--mss-font-family);
    color: var(--mss-cal-day-color);
    background: var(--mss-cal-day-bg);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    user-select: none;
}
.mss-cal-day:not(.empty):not(.past):not(.booked):hover { background: var(--mss-cal-day-bg-hover); color: #f1f5f9; }
.mss-cal-day.selected { background: var(--mss-cal-day-bg-selected); color: var(--mss-cal-day-color-selected); border: var(--mss-cal-selected-border); box-shadow: var(--mss-cal-selected-shadow); font-weight: 700; }
.mss-cal-day.booked { background: var(--mss-cal-day-bg-booked); color: var(--mss-cal-day-color-booked); cursor: not-allowed; text-decoration: line-through; }
.mss-cal-day.past { opacity: 0.25; cursor: not-allowed; }
.mss-cal-day.today { border: var(--mss-cal-today-border); }
.mss-cal-day.empty { background: transparent; cursor: default; }

.mss-calendar-legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
.mss-legend-item { display: flex; align-items: center; gap: 6px; font-size: 0.78em; color: var(--mss-color-subtitle); }
.mss-legend-dot { width: 10px; height: 10px; border-radius: 3px; }
.mss-legend-available { background: var(--mss-legend-available-color); }
.mss-legend-booked { background: var(--mss-legend-booked-color); }
.mss-legend-selected { background: var(--mss-legend-selected-color); }


/* ============================================
   FORM — DARK INPUTS
   ============================================ */
.mss-form-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mss-field-full { grid-column: 1 / -1; }
.mss-field label { display: block; font-size: 0.85em; font-weight: 500; color: var(--mss-input-label-color); margin-bottom: 6px; }
.mss-field input,
.mss-field textarea {
    width: 100%;
    padding: var(--mss-input-padding);
    background: var(--mss-input-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: var(--mss-input-border);
    border-radius: var(--mss-input-radius);
    color: var(--mss-input-color);
    font-size: 0.95em;
    font-family: inherit;
    transition: all 0.2s;
    outline: none;
}
.mss-field input::placeholder, .mss-field textarea::placeholder { color: var(--mss-input-placeholder); }
.mss-field input:focus, .mss-field textarea:focus { background: var(--mss-input-bg-focus); border: var(--mss-input-border-focus); box-shadow: var(--mss-input-focus-shadow); }
.mss-field input.error, .mss-field textarea.error { border: var(--mss-input-border-error); box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }
.mss-field-error { display: block; font-size: 0.8em; color: var(--mss-error-color); margin-top: 4px; min-height: 1.2em; }


/* ============================================
   BUTTONS
   ============================================ */
.mss-nav-buttons { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; gap: 10px; }
.mss-btn {
    padding: var(--mss-btn-padding);
    border-radius: var(--mss-btn-radius);
    font: 600 0.95em/1 var(--mss-font-family);
    color: var(--mss-btn-color);
    background: var(--mss-btn-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.12);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--mss-btn-shadow), inset 0 1px 0 rgba(255,255,255,0.12);
}
.mss-btn:hover { background: var(--mss-btn-bg-hover); box-shadow: var(--mss-btn-shadow-hover); transform: translateY(-1px); }
.mss-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.mss-btn-back { background: var(--mss-btn-back-bg); border: 1px solid var(--mss-btn-back-border); box-shadow: none; }
.mss-btn-back:hover { background: rgba(255,255,255,0.05); box-shadow: none; }
.mss-btn-confirm { background: var(--mss-btn-confirm-bg); box-shadow: var(--mss-btn-confirm-shadow); }
.mss-btn-confirm:hover { background: var(--mss-btn-confirm-bg-hover); }


/* ============================================
   SUMMARY
   ============================================ */
.mss-summary {
    background: var(--mss-summary-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--mss-summary-border);
    border-radius: 12px;
    overflow: hidden;
}
.mss-summary + .mss-summary { margin-top: 12px; }
.mss-summary-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.mss-summary-row:last-child { border-bottom: none; }
.mss-summary-row.total { background: var(--mss-summary-total-bg); border-bottom: none; }
.mss-summary-label { font-size: 0.9em; color: var(--mss-summary-label-color); }
.mss-summary-value { font-size: 0.95em; color: var(--mss-summary-value-color); font-weight: 500; text-align: right; }
.mss-summary-row.total .mss-summary-label { color: var(--mss-color-title); font-weight: 700; font-size: 1em; }
.mss-summary-row.total .mss-summary-value { color: var(--mss-color-price); font-weight: 700; font-size: 1.3em; }
.mss-summary-img { width: 50px; height: 50px; border-radius: 8px; object-fit: cover; border: 1px solid rgba(255,255,255,0.1); }
.mss-summary-unit-header {
    padding: 8px 14px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-weight: 700;
    font-size: 0.85em;
    color: var(--mss-accent);
    letter-spacing: 0.5px;
}


/* ============================================
   SUCCESS
   ============================================ */
.mss-success-content { text-align: center; }
.mss-success-icon {
    width: 60px; height: 60px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: var(--mss-success-icon-bg);
    color: var(--mss-success-icon-color);
    border: var(--mss-success-icon-border);
    display: flex; align-items: center; justify-content: center;
    font-size: 2em; font-weight: 700;
    animation: pop 0.4s ease;
}
.mss-success-code { font-size: 1.6em; font-weight: 700; letter-spacing: 3px; font-family: 'Courier New', monospace; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); padding: 12px 20px; border-radius: 10px; color: var(--mss-color-title); display: inline-block; margin: 10px 0; }
.mss-success-hint { color: var(--mss-color-subtitle); font-size: 0.82em; margin: 0 0 16px; }
.mss-success-email-note { margin-top: 24px; font-size: 0.9em; color: var(--mss-color-subtitle); }
.mss-success-email-note strong { color: var(--mss-color-title); }


/* ============================================
   LOADING OVERLAY
   ============================================ */
.mss-loading-overlay {
    position: absolute; inset: 0;
    background: var(--mss-loading-bg);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    border-radius: var(--mss-container-radius);
    z-index: 100;
    backdrop-filter: blur(4px);
}
.mss-loading-overlay p { color: var(--mss-color-subtitle); margin-top: 16px; font-size: 0.9em; }
.mss-spinner { width: 40px; height: 40px; border: 3px solid rgba(255,255,255,0.1); border-top-color: var(--mss-spinner-color); border-radius: 50%; animation: spin 0.8s linear infinite; }


/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes pop { 0% { transform: scale(0.5); opacity: 0; } 60% { transform: scale(1.1); } 100% { transform: scale(1); opacity: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }


/* ============================================
   RESPONSIVE — Tablet / small desktop
   ============================================ */
@media (max-width: 640px) {
    .mss-booking { padding: 12px; margin: 12px; }
    .mss-panel { padding: 14px; }
    .mss-panel-title { font-size: 1.1em; }
    .mss-form-fields { grid-template-columns: 1fr; }
    .mss-install-layout { flex-direction: column; }
    .mss-install-grid { grid-template-columns: 1fr 1fr; }
    .mss-install-preview.visible { flex: 0 0 auto; max-width: 100%; }
    .mss-install-img-wrap { height: 70px; }
    .mss-step-label { display: none; }
    .mss-card-img { width: 44px; height: 44px; }
    .mss-nav-buttons { flex-direction: column; }
    .mss-nav-buttons .mss-btn { width: 100%; text-align: center; }
    .mss-cal-day { height: 28px; font-size: 0.75em; }
    .mss-success-code { font-size: 1.3em; letter-spacing: 2px; }
}