:root {
    /* Color Palette */
    --bg-dark: #f1f5f9;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --border-color: #cbd5e1;
    --text-main: #0f172a;
    --text-muted: #64748b;
    
    --primary: #58bca5;
    --primary-hover: #48a892;
    --primary-gradient: linear-gradient(135deg, #58bca5 0%, #3a9782 100%);
    
    --success: #10b981;
    --success-hover: #059669;
    --success-gradient: linear-gradient(135deg, #10b981 0%, #047857 100%);
    
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #b45309 100%);
    
    --danger: #ef4444;
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    
    /* Typography & Spacing */
    --font-family: 'Inter', 'Noto Sans JP', sans-serif;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* App container layout */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* Sidebar styling */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    flex-shrink: 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    box-shadow: 0 4px 12px rgba(88, 188, 165, 0.3);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .brand {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.logo-text .sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    background: none;
    border: none;
    outline: none;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.nav-item i {
    font-size: 1.1rem;
    width: 20px;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(0, 0, 0, 0.03);
}

.nav-item.active {
    color: #fff;
    background: var(--primary-gradient);
    box-shadow: 0 4px 14px rgba(88, 188, 165, 0.25);
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.env-info {
    font-size: 0.75rem;
    color: var(--success);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.copyright {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    height: 100vh;
    overflow-y: auto;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
}

.header-title h1 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.8rem;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, #0f172a, #475569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-title .subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.month-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius-md);
}

.month-selector label {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.month-selector input[type="month"] {
    background: none;
    border: none;
    color: var(--text-main);
    font-family: var(--font-family);
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
}

/* Button styles */
.btn {
    border: none;
    outline: none;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(88, 188, 165, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 16px rgba(88, 188, 165, 0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #ffffff;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f1f5f9;
}

.btn-success {
    background: var(--success-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
    transform: translateY(-1px);
}

.btn-large {
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.15);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.stat-card.total::before { background: var(--primary-gradient); }
.stat-card.paid::before { background: var(--success-gradient); }
.stat-card.unpaid::before { background: var(--warning-gradient); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.total .stat-icon { background: rgba(88, 188, 165, 0.1); color: var(--primary); }
.paid .stat-icon { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.unpaid .stat-icon { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
}

/* Tab panes */
.tab-pane {
    display: none;
    flex-direction: column;
    gap: 24px;
    animation: fadeIn 0.30s ease;
}

.tab-pane.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Card Panel structures */
.card.panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.panel-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.01);
}

.panel-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-header h2 i {
    color: var(--primary);
}

.panel-body {
    padding: 24px;
}

.panel-body.scrollable {
    max-height: 480px;
    overflow-y: auto;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.88rem;
}

.data-table th {
    color: var(--text-muted);
    font-weight: 500;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.015);
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    vertical-align: middle;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover td {
    background-color: rgba(0, 0, 0, 0.01);
}

/* Alignments */
.text-right { text-align: right; }
.text-center { text-align: center; }

/* Dashboard content grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-unpaid { background-color: rgba(245, 158, 11, 0.12); color: var(--warning); }
.badge-paid { background-color: rgba(16, 185, 129, 0.12); color: var(--success); }

/* Client layout block */
.clients-actions {
    display: flex;
    gap: 16px;
}

.client-card-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    margin-bottom: 16px;
    overflow: hidden;
}

.client-card-header {
    padding: 16px 20px;
    background-color: rgba(0, 0, 0, 0.01);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.client-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.client-title h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

.client-facility-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    background-color: rgba(255, 255, 255, 0.05);
    padding: 2px 8px;
    border-radius: 4px;
}

.client-card-body {
    padding: 20px;
}

.client-meta-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    font-size: 0.82rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-item .meta-label {
    color: var(--text-muted);
}

.meta-item .meta-val {
    font-weight: 500;
    color: var(--text-main);
}

/* Contracts list inside client */
.contracts-section h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contract-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background-color: rgba(0, 0, 0, 0.01);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 8px;
    border-left: 3px solid var(--primary);
}

.contract-info-block {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contract-name-badge {
    font-weight: 600;
    color: var(--primary);
}

.contract-dates {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.price-block {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

/* Billing specific card styles */
.billing-control-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    padding: 32px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}

.control-card-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.control-card-header h2 i {
    color: var(--primary);
}

.control-card-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 6px;
}

.control-card-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.target-summary {
    display: flex;
    gap: 40px;
}

.target-summary .summary-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.target-summary .summary-item .label {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.target-summary .summary-item .val {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
}

.output-folder-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    background-color: rgba(0, 0, 0, 0.015);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.output-folder-info .folder-path {
    color: var(--primary);
    font-family: monospace;
    font-size: 0.85rem;
}

.pdf-link-btn {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.pdf-link-btn:hover {
    text-decoration: underline;
    color: #38bdf8;
}

/* Modals overlays */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    transition: var(--transition);
}

.modal-overlay.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}

.modal-card {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 540px;
    max-width: 90%;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: modalScale 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalScale {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
}

.modal-header h3 i {
    color: var(--primary);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
    max-height: 70vh;
    overflow-y: auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: var(--font-family);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus, 
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 188, 165, 0.15);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.span-2 {
    grid-column: span 2;
}

.modal-info-val {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-main);
}

.modal-info-val.price {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.hidden {
    display: none !important;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* Toast notifications */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

@keyframes slideIn {
    from { transform: translateY(40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }

/* ZOHO CRM Integration Layout */
.zoho-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 24px;
    align-items: start;
}

.zoho-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.zoho-deals-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 550px;
    overflow-y: auto;
    padding-right: 4px;
}

.zoho-deal-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    background-color: #fafafa;
}

.zoho-deal-item:hover {
    border-color: var(--primary);
    background-color: rgba(88, 188, 165, 0.02);
}

.zoho-deal-item.selected {
    border-color: var(--primary);
    background-color: rgba(88, 188, 165, 0.05);
    box-shadow: 0 0 0 1px var(--primary);
}

.zoho-deal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.zoho-deal-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.zoho-deal-amount {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--primary);
}

.zoho-deal-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.zoho-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.zoho-badge-mock {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.zoho-badge-live {
    background-color: rgba(88, 188, 165, 0.1);
    color: var(--primary);
    border: 1px solid rgba(88, 188, 165, 0.2);
}

.mapping-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    gap: 16px;
}

.mapping-tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 8px 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.mapping-tab-btn:hover {
    color: var(--text-main);
}

.mapping-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Autocomplete Suggestion Dropdown */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: 4px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.autocomplete-item:hover {
    background-color: rgba(88, 188, 165, 0.05);
}

.autocomplete-no-results {
    padding: 10px 14px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

/* Zoho Alert Banner */
.zoho-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.zoho-banner-warning {
    background-color: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.zoho-banner-success {
    background-color: rgba(88, 188, 165, 0.08);
    border: 1px solid rgba(88, 188, 165, 0.15);
    color: #3a9782;
}

.zoho-banner i {
    font-size: 1.1rem;
}