/* ============================================
   SALON DASHBOARD - Mister System
   Mobile-First Design
   ============================================ */

/* === CSS Variables === */
:root {
    /* Brand Colors */
    --emerald-50: #ecfdf5;
    --emerald-100: #d1fae5;
    --emerald-400: #34d399;
    --emerald-500: #10b981;
    --emerald-600: #059669;
    --emerald-700: #047857;

    /* Dark Palette */
    --dark-900: #0b1121;
    --dark-800: #0f172a;
    --dark-700: #1e293b;
    --dark-600: #334155;
    --dark-500: #475569;
    --dark-400: #64748b;
    --dark-300: #94a3b8;
    --dark-200: #cbd5e1;
    --dark-100: #e2e8f0;

    /* Status */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Service Colors */
    --color-gel: #10b981;
    --color-acryl: #8b5cf6;
    --color-manikuere: #3b82f6;
    --color-pedikuere: #ec4899;
    --color-headspa: #06b6d4;

    /* Fonts */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    /* Spacing */
    --topbar-height: 56px;
    --datenav-height: 52px;
    --calendar-header-height: 44px;

    /* Calendar */
    --time-col-width: 52px;
    --row-height: 20px;
    --slot-minutes: 15;
}

/* === Reset === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--dark-900);
    color: var(--dark-100);
    height: 100%;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Screens === */
.screen {
    display: none;
    height: 100%;
    width: 100%;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* === Animations === */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ============================================
   LOGIN SCREEN
   ============================================ */

#login-screen {
    align-items: center;
    justify-content: center;
    background: var(--dark-900);
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 360px;
    text-align: center;
    animation: fadeUp 0.5s ease forwards;
}

.login-logo {
    margin-bottom: 32px;
}

.login-logo-img {
    height: 48px;
    width: auto;
}

.login-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--dark-400);
    margin-bottom: 32px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--dark-500);
    pointer-events: none;
}

.input-group input {
    width: 100%;
    padding: 14px 14px 14px 44px;
    background: var(--dark-800);
    border: 1px solid var(--dark-600);
    border-radius: 12px;
    color: var(--dark-100);
    font-family: var(--font-body);
    font-size: 16px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-group input:focus {
    border-color: var(--emerald-500);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.input-group input::placeholder {
    color: var(--dark-500);
}

.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--emerald-500), var(--emerald-600));
    border: none;
    border-radius: 12px;
    color: #fff;
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}

.btn-primary:active {
    transform: scale(0.97);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn-primary .btn-icon {
    width: 18px;
    height: 18px;
}

.btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 12px;
    color: var(--dark-200);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-secondary:active {
    background: var(--dark-600);
}

.btn-secondary i {
    width: 16px;
    height: 16px;
}

.btn-danger {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    color: var(--error);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-danger:active {
    background: rgba(239, 68, 68, 0.2);
}

.btn-danger i {
    width: 16px;
    height: 16px;
}

.btn-text {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    background: none;
    border: none;
    color: var(--emerald-400);
    font-family: var(--font-body);
    font-size: 14px;
    cursor: pointer;
}

.btn-text i {
    width: 16px;
    height: 16px;
}

.login-error {
    color: var(--error);
    font-size: 13px;
    animation: shake 0.3s ease;
}

.login-error.hidden {
    display: none;
}

.login-footer {
    margin-top: 40px;
    font-size: 12px;
    color: var(--dark-500);
    font-family: var(--font-mono);
}

/* ============================================
   TOPBAR
   ============================================ */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--topbar-height);
    padding: 0 16px;
    background: var(--dark-800);
    border-bottom: 1px solid var(--dark-700);
    flex-shrink: 0;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar-logo {
    height: 28px;
    width: auto;
}

.topbar-salon-name {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--dark-100);
}

.topbar-right {
    display: flex;
    gap: 4px;
}

.topbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--dark-400);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.topbar-btn:active {
    background: var(--dark-700);
    color: var(--dark-200);
}

.topbar-btn i {
    width: 18px;
    height: 18px;
}

.topbar-btn.loading i {
    animation: spin 1s linear infinite;
}

/* ============================================
   DATE NAVIGATION
   ============================================ */

.date-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--datenav-height);
    padding: 0 16px;
    background: var(--dark-800);
    border-bottom: 1px solid var(--dark-700);
    flex-shrink: 0;
}

.date-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 10px;
    color: var(--dark-200);
    cursor: pointer;
    transition: background 0.15s;
}

.date-nav-btn:active {
    background: var(--dark-600);
}

.date-nav-btn i {
    width: 18px;
    height: 18px;
}

.date-nav-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.date-nav-today {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--emerald-400);
    background: rgba(16, 185, 129, 0.1);
    border: none;
    padding: 2px 10px;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.date-nav-today:active {
    background: rgba(16, 185, 129, 0.2);
}

.date-nav-date {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--dark-100);
}

/* ============================================
   CALENDAR
   ============================================ */

.calendar-wrapper {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Calendar Header (Staff Names) */
.calendar-header {
    display: grid;
    height: var(--calendar-header-height);
    background: var(--dark-800);
    border-bottom: 1px solid var(--dark-600);
    flex-shrink: 0;
    overflow: hidden;
}

.calendar-header-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    color: var(--dark-200);
    border-right: 1px solid var(--dark-700);
    padding: 4px;
    white-space: nowrap;
    overflow: hidden;
}

.calendar-header-cell:first-child {
    background: var(--dark-800);
    color: var(--dark-400);
    font-family: var(--font-mono);
    font-size: 10px;
}

.calendar-header-cell .staff-table {
    font-size: 10px;
    font-weight: 400;
    color: var(--dark-400);
    font-family: var(--font-mono);
}

/* Calendar Body */
.calendar-body {
    flex: 1;
    overflow: auto;
    position: relative;
    -webkit-overflow-scrolling: touch;
}

.calendar-grid {
    display: grid;
    position: relative;
    min-height: 100%;
}

/* Time Column */
.time-label {
    position: sticky;
    left: 0;
    z-index: 2;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 2px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--dark-500);
    background: var(--dark-900);
    border-right: 1px solid var(--dark-700);
}

/* Time Rows */
.time-row {
    display: contents;
}

.time-cell {
    border-bottom: 1px solid var(--dark-800);
    border-right: 1px solid var(--dark-800);
    min-height: var(--row-height);
    position: relative;
    cursor: pointer;
    transition: background 0.1s;
}

.time-cell:active {
    background: rgba(16, 185, 129, 0.05);
}

.time-cell.hour-mark {
    border-bottom-color: var(--dark-700);
}

/* Now Indicator */
.now-indicator {
    position: absolute;
    left: var(--time-col-width);
    right: 0;
    height: 2px;
    background: var(--error);
    z-index: 5;
    pointer-events: none;
}

.now-indicator::before {
    content: '';
    position: absolute;
    left: -4px;
    top: -3px;
    width: 8px;
    height: 8px;
    background: var(--error);
    border-radius: 50%;
}

/* Appointment Blocks */
.appointment-block {
    position: absolute;
    border-radius: 6px;
    padding: 4px 6px;
    overflow: hidden;
    cursor: pointer;
    z-index: 3;
    transition: transform 0.1s, box-shadow 0.1s;
    border-left: 3px solid;
}

.appointment-block {
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.appointment-block:active {
    transform: scale(0.98);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.appointment-block .apt-customer {
    font-size: 11px;
    font-weight: 600;
    color: #fff;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.appointment-block .apt-service {
    font-size: 9px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Service Category Colors */
.appointment-block.cat-gel {
    background: rgba(16, 185, 129, 0.2);
    border-left-color: var(--color-gel);
}

.appointment-block.cat-acryl {
    background: rgba(139, 92, 246, 0.2);
    border-left-color: var(--color-acryl);
}

.appointment-block.cat-manikuere {
    background: rgba(59, 130, 246, 0.2);
    border-left-color: var(--color-manikuere);
}

.appointment-block.cat-pedikuere {
    background: rgba(236, 72, 153, 0.2);
    border-left-color: var(--color-pedikuere);
}

.appointment-block.cat-headspa {
    background: rgba(6, 182, 212, 0.2);
    border-left-color: var(--color-headspa);
}

/* ============================================
   FAB (Floating Action Button)
   ============================================ */

.fab {
    position: fixed;
    bottom: 24px;
    right: 20px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--emerald-500), var(--emerald-600));
    border: none;
    border-radius: 16px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
    cursor: pointer;
    z-index: 10;
    transition: transform 0.15s, box-shadow 0.15s;
}

.fab:active {
    transform: scale(0.93);
}

.fab i {
    width: 24px;
    height: 24px;
}

/* ============================================
   LAST UPDATED
   ============================================ */

.last-updated {
    position: fixed;
    bottom: 24px;
    left: 16px;
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--dark-500);
    z-index: 10;
}

.last-updated-icon {
    width: 12px;
    height: 12px;
}

/* ============================================
   OVERLAY & BOTTOM SHEET
   ============================================ */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 50;
    display: flex;
    align-items: flex-end;
    animation: fadeIn 0.2s ease;
}

.overlay.hidden {
    display: none;
}

.bottom-sheet {
    width: 100%;
    max-height: 85vh;
    background: var(--dark-800);
    border-radius: 20px 20px 0 0;
    padding: 8px 20px 32px;
    overflow-y: auto;
    animation: slideUp 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

.bottom-sheet-full {
    max-height: 92vh;
}

.sheet-handle {
    width: 36px;
    height: 4px;
    background: var(--dark-600);
    border-radius: 2px;
    margin: 0 auto 16px;
}

.sheet-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-700);
    border: none;
    border-radius: 8px;
    color: var(--dark-400);
    cursor: pointer;
}

.sheet-close i {
    width: 18px;
    height: 18px;
}

/* ============================================
   APPOINTMENT DETAIL
   ============================================ */

.detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.detail-service-badge {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--emerald-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-customer {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.detail-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.detail-row {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--dark-300);
}

.detail-row i {
    width: 16px;
    height: 16px;
    color: var(--dark-500);
    flex-shrink: 0;
}

.detail-phone {
    color: var(--emerald-400);
    text-decoration: none;
}

.detail-actions {
    display: flex;
    gap: 12px;
}

.detail-actions button {
    flex: 1;
}

/* ============================================
   BOOKING FLOW
   ============================================ */

.booking-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.booking-header h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

/* Steps Indicator */
.steps-indicator {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
}

.step {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 0;
    font-size: 12px;
    color: var(--dark-500);
    border-bottom: 2px solid var(--dark-700);
    transition: color 0.2s, border-color 0.2s;
}

.step span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--dark-700);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
}

.step.active {
    color: var(--emerald-400);
    border-bottom-color: var(--emerald-500);
}

.step.active span {
    background: var(--emerald-500);
    color: #fff;
}

.step.done {
    color: var(--dark-300);
    border-bottom-color: var(--emerald-500);
}

.step.done span {
    background: var(--emerald-700);
    color: var(--emerald-100);
}

/* Booking Steps */
.booking-step {
    display: none;
    animation: fadeUp 0.3s ease forwards;
}

.booking-step.active {
    display: block;
}

.step-title {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--dark-200);
    margin-bottom: 16px;
}

/* Service Categories */
.service-categories {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.category-chip {
    padding: 8px 14px;
    border-radius: 20px;
    border: 1px solid var(--dark-600);
    background: var(--dark-700);
    color: var(--dark-300);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.category-chip.active {
    border-color: var(--emerald-500);
    background: rgba(16, 185, 129, 0.1);
    color: var(--emerald-400);
}

/* Service List */
.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.service-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 12px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.service-card:active {
    background: var(--dark-600);
}

.service-card.selected {
    border-color: var(--emerald-500);
    background: rgba(16, 185, 129, 0.08);
}

.service-card-info h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark-100);
    margin-bottom: 2px;
}

.service-card-info p {
    font-size: 12px;
    color: var(--dark-400);
}

.service-card-duration {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--dark-400);
}

/* Add-Ons */
.addons-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--dark-300);
    margin-bottom: 10px;
}

.addons-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.addon-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.15s;
}

.addon-card.selected {
    border-color: var(--emerald-500);
}

.addon-card-name {
    font-size: 13px;
    color: var(--dark-200);
}

.addon-card-duration {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--dark-400);
}

/* Staff Grid */
.staff-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.staff-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 12px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 14px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.staff-card:active {
    background: var(--dark-600);
}

.staff-card.selected {
    border-color: var(--emerald-500);
    background: rgba(16, 185, 129, 0.08);
}

.staff-card.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.staff-avatar {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--dark-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    color: var(--emerald-400);
    margin-bottom: 8px;
}

.staff-card-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--dark-100);
}

.staff-card-table {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--dark-400);
}

/* Time Slots */
.date-input {
    width: 100%;
    padding: 12px 14px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 12px;
    color: var(--dark-100);
    font-family: var(--font-body);
    font-size: 15px;
    outline: none;
    margin-bottom: 16px;
    color-scheme: dark;
}

.date-input:focus {
    border-color: var(--emerald-500);
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    max-height: 300px;
    overflow-y: auto;
}

.time-slot {
    padding: 10px;
    text-align: center;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--dark-200);
    cursor: pointer;
    transition: all 0.15s;
}

.time-slot:active {
    background: var(--dark-600);
}

.time-slot.selected {
    border-color: var(--emerald-500);
    background: rgba(16, 185, 129, 0.1);
    color: var(--emerald-400);
}

.time-slot.unavailable {
    opacity: 0.25;
    pointer-events: none;
    text-decoration: line-through;
}

/* Customer Search */
.customer-results {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 200px;
    overflow-y: auto;
    margin: 12px 0;
}

.customer-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.15s;
}

.customer-item:active {
    background: var(--dark-600);
}

.customer-item.selected {
    border-color: var(--emerald-500);
}

.customer-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--dark-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--dark-300);
    flex-shrink: 0;
}

.customer-info h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark-100);
}

.customer-info p {
    font-size: 12px;
    color: var(--dark-400);
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 10px;
    color: var(--dark-100);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    margin-bottom: 10px;
}

.form-input:focus {
    border-color: var(--emerald-500);
}

.form-input::placeholder {
    color: var(--dark-500);
}

/* Booking Nav */
.booking-nav {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--dark-700);
}

.booking-nav button {
    flex: 1;
}

.booking-nav button:disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* ============================================
   TOAST
   ============================================ */

.toast {
    position: fixed;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    border-radius: 12px;
    z-index: 100;
    animation: fadeUp 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.toast.hidden {
    display: none;
}

.toast.success .toast-icon {
    color: var(--success);
}

.toast.error .toast-icon {
    color: var(--error);
}

.toast-icon {
    width: 18px;
    height: 18px;
}

#toast-message {
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-100);
}

/* ============================================
   SKELETON LOADING
   ============================================ */

.skeleton {
    background: linear-gradient(90deg, var(--dark-700) 25%, var(--dark-600) 50%, var(--dark-700) 75%);
    background-size: 200% 100%;
    animation: pulse 1.5s ease-in-out infinite;
    border-radius: 6px;
}

/* ============================================
   UTILITY
   ============================================ */

.hidden {
    display: none !important;
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--dark-600);
    border-radius: 2px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (min-width: 768px) {
    .staff-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .time-slots {
        grid-template-columns: repeat(6, 1fr);
    }

    .bottom-sheet {
        max-width: 480px;
        margin: 0 auto;
        border-radius: 20px 20px 0 0;
    }
}

@media (min-width: 1024px) {
    .bottom-sheet {
        max-width: 560px;
    }

    .fab {
        bottom: 32px;
        right: 32px;
    }
}