@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS variables for customizable design token system */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #64748b;
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --info: #06b6d4;
    --info-light: #ecfeff;
    
    --bg-main: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-sidebar: #0f172a;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-size: 0.95rem;
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

/* Sidebar Styling */
.app-sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    box-shadow: 4px 0 25px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
}

.sidebar-logo {
    padding: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-logo .brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.5px;
}

.sidebar-logo .brand-subtitle {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.sidebar-menu {
    flex: 1;
    padding: 24px 16px;
    list-style: none;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.925rem;
    color: #94a3b8;
}

.sidebar-item a:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.05);
}

.sidebar-item.active a {
    color: #fff;
    background-color: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.sidebar-user {
    padding: 16px 24px;
    background-color: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: #fff;
}

.user-role {
    font-size: 0.75rem;
    color: #64748b;
    text-transform: capitalize;
}

.logout-btn {
    color: #94a3b8;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--danger);
}

/* Main Content Area */
.app-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px;
    width: calc(100% - 260px);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Shared Top Header inside Content */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.header-title p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Premium Card Components */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

/* KPI / Metric Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.metric-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-data {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.icon-primary { background-color: var(--primary-light); color: var(--primary); }
.icon-success { background-color: var(--success-light); color: var(--success); }
.icon-warning { background-color: var(--warning-light); color: var(--warning); }
.icon-danger { background-color: var(--danger-light); color: var(--danger); }
.icon-info { background-color: var(--info-light); color: var(--info); }

/* Buttons & Inputs */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: white;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-secondary:hover {
    background-color: var(--border-light);
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-success:hover {
    background-color: #059669;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* Beautiful Modern Forms */
.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.form-control, select, textarea {
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: white;
    font-size: 0.9rem;
    color: var(--text-main);
    outline: none;
    transition: var(--transition);
}

.form-control:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Elegant Table Design */
.table-container {
    overflow-x: auto;
    margin-top: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background-color: white;
}

th {
    background-color: var(--border-light);
    padding: 14px 18px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-main);
    vertical-align: middle;
    font-size: 0.9rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: #fcfdfe;
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-primary { background-color: var(--primary-light); color: var(--primary); }
.badge-success { background-color: var(--success-light); color: var(--success); }
.badge-warning { background-color: var(--warning-light); color: var(--warning); }
.badge-danger { background-color: var(--danger-light); color: var(--danger); }
.badge-info { background-color: var(--info-light); color: var(--info); }
.badge-secondary { background-color: var(--border-light); color: var(--secondary); }

/* Timeline UI for follow-ups */
.timeline {
    position: relative;
    padding-left: 24px;
    margin-top: 15px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 5px;
    bottom: 5px;
    width: 2px;
    background-color: var(--border);
}

.timeline-item {
    position: relative;
    margin-bottom: 24px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -24px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: white;
    border: 3px solid var(--primary);
    z-index: 2;
}

.timeline-marker.system {
    border-color: var(--secondary);
}

.timeline-content {
    background-color: var(--border-light);
    padding: 14px;
    border-radius: var(--radius-sm);
}

.timeline-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.timeline-author {
    font-weight: 600;
    color: var(--text-muted);
}

.timeline-text {
    font-size: 0.875rem;
    color: var(--text-main);
}

/* Process Stages Steps Indicator */
.process-steps {
    display: flex;
    justify-content: space-between;
    margin: 20px 0;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 14px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--border);
    z-index: 1;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
    flex: 1;
}

.step-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: white;
    border: 3px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-light);
    transition: var(--transition);
}

.step-label {
    margin-top: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}

.step-item.active .step-badge {
    border-color: var(--primary);
    background-color: var(--primary-light);
    color: var(--primary);
}

.step-item.completed .step-badge {
    border-color: var(--success);
    background-color: var(--success);
    color: white;
}

.step-item.completed .step-label {
    color: var(--success);
}

.step-item.active .step-label {
    color: var(--primary);
}

/* Split view layouts */
.layout-split {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
}

@media (max-width: 1024px) {
    .layout-split {
        grid-template-columns: 1fr;
    }
}

/* Beautiful Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background-color: white;
    border-radius: var(--radius);
    width: 100%;
    max-width: 550px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: translateY(20px);
    transition: var(--transition);
}

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

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Invoices Print-Friendly Stylesheet */
@media print {
    body {
        background-color: white !important;
        color: black !important;
    }
    .app-sidebar, .content-header, .btn, .no-print {
        display: none !important;
    }
    .app-content {
        margin-left: 0 !important;
        padding: 0 !important;
        width: 100% !important;
    }
    .card {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
    }
}

/* Login Page Styles */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
    background: radial-gradient(circle at top right, var(--primary-light) 0%, var(--bg-main) 60%);
}

.login-box {
    width: 100%;
    max-width: 420px;
}

/* Footer developer credentials */
.app-footer {
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
    border-top: 1px solid var(--border-light);
    color: var(--text-light);
    font-size: 0.8rem;
}

.app-footer a {
    color: var(--primary);
    font-weight: 500;
}

.app-footer a:hover {
    text-decoration: underline;
}

/* Alert Notification toast container */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 9999;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 500;
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(50px);
    opacity: 0;
    animation: toast-in 0.3s forwards cubic-bezier(0.4, 0, 0.2, 1);
}

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

@keyframes toast-in {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Mobile Responsive Topbar Styling */
.mobile-topbar {
    display: none;
    height: 60px;
    background-color: var(--bg-sidebar);
    color: white;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.menu-toggle-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.menu-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.mobile-brand-name {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Sidebar Item Font Awesome Alignments */
.sidebar-item a i {
    font-size: 1.05rem;
    margin-right: 8px;
    opacity: 0.8;
}

.sidebar-user .logout-btn i {
    font-size: 1.1rem;
}

/* Mobile Screen Sizes (Tablet & Phone) Media Queries */
@media (max-width: 768px) {
    .mobile-topbar {
        display: flex;
    }
    
    .app-container {
        flex-direction: column;
    }
    
    .app-sidebar {
        width: 260px;
        transform: translateX(-100%);
        box-shadow: 4px 0 25px rgba(0, 0, 0, 0.25);
        padding-top: 10px;
    }
    
    .app-sidebar.active {
        transform: translateX(0);
    }
    
    .app-content {
        margin-left: 0 !important;
        width: 100% !important;
        padding: 16px !important;
        margin-top: 60px; /* Offset the mobile topbar */
        gap: 20px;
    }
    
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .header-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .header-actions .btn {
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .layout-split {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .process-steps {
        overflow-x: auto;
        padding-bottom: 10px;
        justify-content: flex-start;
        gap: 20px;
    }
    
    .step-item {
        min-width: 90px;
        flex: none;
    }
    
    .process-steps::before {
        display: none; /* Hide connector bar on small layouts */
    }
}

/* Notification Widgets Styling */
.notification-container {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.notification-container:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.notification-container .fa-bell {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
}

.notif-count-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--danger);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid var(--bg-sidebar);
}

.mobile-topbar .notif-count-badge {
    border-color: var(--bg-sidebar);
}

.notif-dropdown {
    position: absolute;
    top: 36px;
    right: 0;
    width: 290px;
    background-color: white;
    color: var(--text-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: none;
    text-align: left;
}

#notif-trigger-desktop .notif-dropdown {
    left: 0;
    right: auto;
    top: 40px;
}

.notif-dropdown-header {
    font-weight: 700;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.notif-items-list {
    max-height: 260px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.notif-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: var(--transition);
}

.notif-item:hover {
    background-color: #f7fafc;
}

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

.notif-item-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--primary);
}

.notif-item-time {
    font-size: 0.7rem;
    color: var(--danger);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.notif-item-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 250px;
}

.notif-empty-state {
    padding: 20px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.82rem;
}

/* Notification Item Interactive Hover Styling */
.notif-wrapper:hover {
    background-color: #f7fafc;
}

.notif-done-btn:hover {
    background-color: var(--success-light);
    color: var(--success) !important;
}