/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --whatsapp: #25D366;

    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-whatsapp: linear-gradient(135deg, #25D366 0%, #128C7E 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== AUTH SCREEN ===== */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.auth-screen::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    50% {
        transform: translate(-30px, -30px) rotate(180deg);
    }
}

.auth-container {
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 1;
}

.auth-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-header i {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.auth-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.auth-header p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.tab-switcher {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--gray-100);
    padding: 0.25rem;
    border-radius: var(--radius-lg);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form-group label i {
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.btn-primary {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gray-100);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-secondary:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

/* ===== DASHBOARD LAYOUT ===== */
.dashboard-screen {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: white;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sidebar-header i {
    font-size: 2rem;
    color: var(--primary-light);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    transition: var(--transition);
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.nav-item i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-logout {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.5);
}

.main-content {
    flex: 1;
    margin-left: 280px;
    background: var(--gray-50);
}

.top-header {
    background: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-600);
}

.user-info i {
    font-size: 2rem;
    color: var(--primary);
}

.content-wrapper {
    padding: var(--spacing-xl);
}

.page-content {
    display: none;
}

.page-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-icon.blue {
    background: var(--gradient-primary);
}

.stat-icon.green {
    background: var(--gradient-success);
}

.stat-icon.orange {
    background: var(--gradient-warning);
}

.stat-icon.red {
    background: var(--gradient-danger);
}

.stat-icon.purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.stat-icon.teal {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--gray-600);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===== SECTION CARDS ===== */
.section-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.section-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-50);
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.filter-group {
    display: flex;
    gap: var(--spacing-sm);
}

.filter-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ===== BILLS & PAYMENTS ===== */
.bills-list,
.payments-list {
    padding: var(--spacing-lg);
}

.bill-item,
.payment-item {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.bill-item:hover,
.payment-item:hover {
    background: var(--gray-50);
}

.bill-item:last-child,
.payment-item:last-child {
    border-bottom: none;
}

.bill-info,
.payment-info {
    flex: 1;
}

.bill-tenant {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
    font-size: 1.05rem;
}

.bill-details,
.payment-details {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--gray-600);
    font-size: 0.9rem;
}

.bill-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.phone-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-success);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.phone-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.whatsapp-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-whatsapp);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.status-badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.status-badge.overdue {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.status-badge.paid {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.btn-mark-paid {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-mark-paid:hover {
    background: var(--primary-dark);
}

/* ===== TABLE ===== */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--gray-50);
}

th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 700;
    color: var(--gray-700);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--gray-200);
}

td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
}

tr:hover {
    background: var(--gray-50);
}

.action-btns {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-icon {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon.edit {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.btn-icon.delete {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.btn-icon:hover {
    transform: scale(1.1);
}

/* ===== PAGE ACTIONS ===== */
.page-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

/* ===== MODALS ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-50);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-200);
    color: var(--gray-600);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--gray-300);
    color: var(--gray-900);
}

.modal form {
    padding: var(--spacing-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* ===== UPLOAD INSTRUCTIONS ===== */
.upload-instructions {
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl);
    border: 1px solid var(--gray-200);
}

.upload-instructions p {
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.upload-instructions p i {
    color: var(--primary);
}

.upload-instructions ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--gray-600);
}

.upload-instructions ol li {
    margin-bottom: var(--spacing-xs);
}

/* ===== UPLOAD AREA ===== */
.upload-area {
    padding: var(--spacing-2xl);
    text-align: center;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl);
    transition: var(--transition);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.upload-area h3 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.upload-area p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: var(--spacing-lg);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transform: translateY(200%);
    transition: var(--transition);
}

.toast.show {
    transform: translateY(0);
}

.toast.success {
    background: var(--gradient-success);
}

.toast.error {
    background: var(--gradient-danger);
}

.toast.warning {
    background: var(--gradient-warning);
}

/* ===== SETTINGS FORM ===== */
.settings-form {
    max-width: 600px;
    padding: var(--spacing-xl);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--gray-500);
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
    }

    .sidebar-header h2,
    .nav-item span,
    .btn-logout span {
        display: none;
    }

    .main-content {
        margin-left: 70px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .top-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ===== LOADING SPINNER ===== */
.spinner {
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.btn-primary.loading,
.btn-secondary.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-primary.loading::after,
.btn-secondary.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-sm);
}/* ===== NEW BILLING FEATURES STYLES ===== */

/* Payment History Modal */
.modal-large {
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
}

.history-tenant-info {
    padding: var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.history-tenant-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.history-tenant-info p {
    opacity: 0.9;
    margin: 0.25rem 0;
}

.history-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.summary-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition);
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.summary-card i {
    font-size: 2rem;
    color: var(--success);
}

.summary-card.pending i {
    color: var(--warning);
}

.summary-card.overdue i {
    color: var(--danger);
}

.summary-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.summary-card p {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin: 0;
}

.history-section {
    margin-bottom: var(--spacing-xl);
}

.history-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.history-section h3 i {
    color: var(--primary);
}

.payment-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.payment-item:hover {
    background: var(--gray-50);
    border-color: var(--primary);
}

.payment-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.payment-icon.paid {
    background: var(--gradient-success);
}

.payment-icon.pending {
    background: var(--gradient-warning);
}

.payment-icon.overdue {
    background: var(--gradient-danger);
}

.payment-details {
    flex: 1;
}

.payment-details h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.payment-details p {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin: 0.125rem 0;
}

.payment-notes {
    font-style: italic;
    color: var(--gray-500);
}

.payment-amount {
    text-align: right;
}

.payment-amount strong {
    font-size: 1.1rem;
    color: var(--gray-900);
    display: block;
    margin-bottom: 0.25rem;
}

.payment-amount small {
    font-size: 0.8rem;
    color: var(--gray-600);
    display: block;
}

.no-data {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray-500);
    font-style: italic;
}

/* Bill Breakdown Modal */
.breakdown-tenant-info {
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.breakdown-tenant-info h3 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.breakdown-tenant-info p {
    color: var(--gray-600);
    margin: 0;
}

.breakdown-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.breakdown-section h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.breakdown-section h4 i {
    color: var(--primary);
}

.breakdown-section p {
    margin: 0.25rem 0;
    color: var(--gray-700);
}

.breakdown-calculation {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--gray-200);
}

.calc-row:last-child {
    border-bottom: none;
}

.calc-row.total {
    border-top: 2px solid var(--gray-300);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.calc-amount {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.text-danger {
    color: var(--danger) !important;
}

.unpaid-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.unpaid-cycle-item {
    display: grid;
    grid-template-columns: 1fr 1fr auto auto;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    align-items: center;
}

.unpaid-cycle-item strong {
    text-align: right;
}

/* Form Help Text */
.form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: var(--gray-500);
    font-style: italic;
}

/* Status Badges for Breakdown */
.status-pending {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.status-overdue {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.status-paid {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .modal-large {
        max-width: 95%;
        margin: var(--spacing-md);
    }

    .history-summary {
        grid-template-columns: 1fr;
    }

    .unpaid-cycle-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .unpaid-cycle-item strong {
        text-align: center;
    }
}