/* Cashflow - Main Stylesheet */

:root {
    --primary-color: #16A3A3;
    --primary-dark: #0f8d8d;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #0B1D2D;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --sidebar-width: 260px;
}

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

body {
    font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

.brand-logo {
    display: block;
    object-fit: contain;
    box-sizing: border-box;
    padding: 0.375rem;
    border-radius: 12px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, #eef4fb 100%);
    border: 1px solid rgba(148, 163, 184, 0.28);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

.brand-logo--dark-bg {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, rgba(226, 232, 240, 0.12) 100%);
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow: 0 12px 28px rgba(2, 6, 23, 0.34);
}

.brand-wordmark {
    color: inherit;
    letter-spacing: -0.02em;
}

.brand-wordmark-subtle {
    color: rgba(255, 255, 255, 0.65);
}

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

.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #0B1D2D 0%, #081622 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand-link {
    text-decoration: none;
    color: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand-icon {
    width: 35px;
    height: 35px;
    display: block;
    filter: saturate(1.08) brightness(1.04) drop-shadow(0 0 10px rgba(45, 212, 191, 0.16));
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.sidebar-header p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.25rem;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-section {
    padding: 0.5rem 1.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 1rem;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: var(--primary-color);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    margin-right: 0.75rem;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem;
    min-height: 100vh;
}

/* Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.dashboard-brand-head {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
}

.dashboard-brand-icon {
    width: 40px;
    height: 40px;
    display: block;
}

.page-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-header p {
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.stat-card.blue {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
}

.stat-card.green {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.stat-card.red {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

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

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
}

.stat-description {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

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

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--light-bg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

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

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

th, td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background: var(--light-bg);
}

tbody tr:hover {
    background: var(--light-bg);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

.badge-secondary {
    background: #e2e8f0;
    color: #475569;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Charts Container */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 12px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Actions */
.actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--light-bg);
    color: var(--text-primary);
}

.action-btn.delete:hover {
    background: #fee2e2;
    color: var(--danger-color);
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.quick-action {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.quick-action:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
}

.quick-action-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.quick-action-icon.blue { background: #dbeafe; color: #2563eb; }
.quick-action-icon.green { background: #d1fae5; color: #059669; }
.quick-action-icon.red { background: #fee2e2; color: #dc2626; }
.quick-action-icon.purple { background: #ede9fe; color: #7c3aed; }

/* Login Page */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0B1D2D 0%, #081622 100%);
    padding: 2rem;
}

.auth-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-brand-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 0.75rem;
    display: block;
}

.auth-brand-subtitle {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.auth-header h1 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.auth-header p {
    color: var(--text-secondary);
}

.sidebar-footer {
    padding: 0.75rem 1.5rem 1.25rem;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.55);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* User Info in Sidebar */
.user-info {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: 0.75rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: white;
}

.user-email {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Toast Messages */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.toast-success { background: var(--success-color); }
.toast-error { background: var(--danger-color); }
.toast-warning { background: var(--warning-color); }
.toast-info { background: var(--info-color); }

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

/* Item List */
.item-list {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.item-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

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

.item-row.header {
    background: var(--light-bg);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.item-description {
    font-weight: 500;
}

.item-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Invoice Items */
.invoice-items {
    margin-top: 1rem;
}

.invoice-item {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr auto;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.invoice-item:last-child {
    border-bottom: none;
}

.invoice-item input {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
}

.invoice-total {
    text-align: right;
    font-size: 1.25rem;
    font-weight: 700;
    padding: 1rem 0;
    border-top: 2px solid var(--border-color);
    margin-top: 1rem;
}

/* Forecast */
.forecast-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.forecast-card {
    background: var(--light-bg);
    padding: 1.25rem;
    border-radius: 8px;
    text-align: center;
}

.forecast-card .value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.forecast-card .label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.forecast-card.negative .value {
    color: var(--danger-color);
}

.forecast-card.positive .value {
    color: var(--success-color);
}