/* Modern Mobile-First CSS System for Company Financial Software */
:root {
    --bg-primary: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-hover: rgba(51, 65, 85, 0.8);
    --bg-input: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --purple: #8b5cf6;
    --border-color: rgba(255, 255, 255, 0.08);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-glow: 0 10px 30px -10px rgba(59, 130, 246, 0.3);
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.5;
    padding-bottom: 90px; /* Space for mobile bottom bar */
    -webkit-tap-highlight-color: transparent;
}

/* Layout Grid */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar (Desktop) */
.sidebar {
    width: 260px;
    background: #090d16;
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 32px;
}

.brand-logo i {
    color: var(--primary);
    font-size: 1.6rem;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 24px;
    max-width: 1400px;
}

/* Header Navbar */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.page-title {
    font-size: 1.35rem;
    font-weight: 700;
}

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

.balance-chip {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 6px 14px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    color: #60a5fa;
}

/* Summary Grid Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    transition: transform 0.2s;
}

.metric-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-value {
    font-size: 1.45rem;
    font-weight: 800;
}

.metric-value.income { color: var(--success); }
.metric-value.expense { color: var(--danger); }
.metric-value.pending { color: var(--warning); }
.metric-value.purple { color: var(--purple); }

/* Paytm-Style Transaction Feed Cards */
.paytm-feed {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.txn-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.txn-card:hover {
    background: var(--bg-card-hover);
}

.txn-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.txn-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.txn-icon.income { background: var(--success-bg); color: var(--success); }
.txn-icon.expense { background: var(--danger-bg); color: var(--danger); }
.txn-icon.distribution { background: rgba(139, 92, 246, 0.15); color: var(--purple); }

.txn-details .title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.txn-details .meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
}

.badge-income { background: var(--success-bg); color: var(--success); }
.badge-expense { background: var(--danger-bg); color: var(--danger); }
.badge-category { background: rgba(255, 255, 255, 0.1); color: var(--text-main); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }

.income-projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.income-project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
}

.project-card-top,
.project-card-row,
.modal-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.project-card-name {
    font-weight: 700;
    color: #fff;
    overflow-wrap: anywhere;
}

.project-card-subtitle {
    margin-top: 3px;
    color: var(--text-muted);
    font-size: 0.75rem;
    overflow-wrap: anywhere;
}

.project-card-row {
    margin-top: 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.project-card-row strong {
    display: block;
    color: var(--text-main);
    font-size: 0.95rem;
    margin-top: 2px;
}

.project-card-progress {
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 14px;
}

.project-card-progress span {
    display: block;
    height: 100%;
    background: var(--success);
    border-radius: inherit;
}

.modal-shell {
    position: fixed;
    inset: 0;
    z-index: 2100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(0,0,0,0.8);
}

.modal-card {
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    background: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.modal-heading {
    margin-bottom: 20px;
}

.modal-heading h3 {
    font-size: 1.2rem;
}

.eyebrow {
    display: block;
    color: var(--success);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.modal-close {
    background: transparent;
    border: 0;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px;
}

.form-note {
    color: var(--text-muted);
    font-size: 0.78rem;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
}

.project-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 18px;
}

.payment-project-fields {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.payment-project-fields .form-group {
    min-width: 0;
}

.payment-project-fields .form-control {
    padding: 10px;
    font-size: 0.82rem;
}

.payment-history-section-title {
    margin: 20px 0 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.95rem;
    font-weight: 700;
}

.client-history-project {
    margin-top: 12px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.03);
}

.client-history-project.selected {
    border-color: rgba(59,130,246,0.65);
    background: rgba(59,130,246,0.08);
}

.client-history-project-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    color: var(--text-main);
    font-size: 0.82rem;
}

.client-history-project-heading strong,
.client-history-project-heading span {
    display: block;
}

.client-history-project-heading span,
.client-history-meta,
.client-history-empty {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 4px;
}

.payment-history-row span {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.payment-history-row span strong {
    color: var(--text-main);
    font-weight: 600;
}

.payment-history-row small {
    color: var(--text-muted);
}

.project-summary > div {
    padding: 10px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.72rem;
}

.project-summary strong {
    display: block;
    color: var(--text-main);
    font-size: 0.9rem;
    margin-top: 3px;
}

.payment-history {
    margin-top: 22px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.payment-history h4 {
    margin-bottom: 8px;
}

.payment-history-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.payment-history-row strong {
    color: var(--success);
}

.transaction-filters input {
    min-width: 0;
    flex: 1 1 220px;
}

.transaction-filters select {
    flex: 0 1 250px;
}

.txn-amount {
    text-align: right;
    font-size: 1.1rem;
    font-weight: 700;
}

.txn-amount.plus { color: var(--success); }
.txn-amount.minus { color: var(--danger); }

/* Quick Entry Floating Action Button (FAB) */
.fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
}

.fab-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    font-size: 1.6rem;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fab-btn:hover {
    transform: scale(1.08);
}

/* FAB Action Overlay Modal */
.fab-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1001;
    display: none;
    align-items: flex-end;
    justify-content: center;
    padding: 16px;
}

.fab-overlay.active {
    display: flex;
}

.fab-menu-card {
    background: #1e293b;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius-lg);
    padding: 24px;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.quick-action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 8px;
    cursor: pointer;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    text-align: center;
    transition: all 0.2s;
}

.quick-action-item:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.quick-action-item i {
    font-size: 1.4rem;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: inherit;
    font-size: 0.95rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.category-select-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-heading-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.empty-state {
    padding: 24px;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    text-align: center;
}

.category-select-row .form-control {
    min-width: 0;
}

.category-add-button {
    flex: 0 0 46px;
    min-height: 46px;
    padding: 10px;
    background: #334155;
    color: #fff;
}

.category-add-button:hover {
    background: var(--primary);
}

.btn {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-primary { background: var(--primary-gradient); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-block { width: 100%; }

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #090d16;
    border-top: 1px solid var(--border-color);
    padding: 8px 12px;
    z-index: 999;
}

@media (max-width: 900px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; padding: 16px; }
    .mobile-bottom-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }
    .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        color: var(--text-muted);
        text-decoration: none;
        font-size: 0.72rem;
    }
    .mobile-nav-item.active, .mobile-nav-item:hover {
        color: var(--primary);
    }
    .mobile-nav-item i {
        font-size: 1.2rem;
    }

    .top-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        gap: 8px;
    }

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

    .payment-project-fields {
        grid-template-columns: 1fr;
    }

    .section-heading-row .btn {
        width: 100%;
    }

    .transaction-filters {
        flex-wrap: wrap;
    }

    .transaction-filters select {
        width: 100% !important;
        flex-basis: 100%;
    }
}