:root {
    /* Color Palette */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-soft: rgba(79, 70, 229, 0.1);
    
    --success-color: #10b981;
    --success-soft: rgba(16, 185, 129, 0.1);
    
    --warning-color: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.1);
    
    --info-color: #0ea5e9;
    --info-soft: rgba(14, 165, 233, 0.1);
    
    --danger-color: #ef4444;
    --danger-soft: rgba(239, 68, 68, 0.1);
    
    --bg-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(255, 255, 255, 0.5);
    
    --text-main: #1e293b;
    --text-muted: #64748b;
    
    --sidebar-width: 260px;
    --topbar-height: 70px;
    
    /* Typography */
    --font-family: 'Inter', sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* Onboarding Pulse Animations */
@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.hover-lift {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.3) !important;
}


body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Glassmorphism Utilities */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow-glass);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.1);
}

/* Auth Page */
.auth-bg {
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e7ff 100%);
    position: relative;
    overflow: hidden;
}

.auth-bg::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(79,70,229,0.15) 0%, rgba(255,255,255,0) 70%);
    top: -200px;
    left: -200px;
    border-radius: 50%;
}

.auth-bg::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(16,185,129,0.1) 0%, rgba(255,255,255,0) 70%);
    bottom: -150px;
    right: -100px;
    border-radius: 50%;
}

.auth-card {
    padding: 2.5rem;
    z-index: 10;
    position: relative;
}

/* Floating Labels */
.form-floating > .form-control,
.form-floating > .form-control-plaintext {
    padding: 1rem 1rem;
}

.form-floating > label {
    padding: 1rem 1rem;
    color: var(--text-muted);
}

.form-control {
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    padding: 0.75rem 1.25rem;
    background-color: rgba(255, 255, 255, 0.9);
    transition: var(--transition-fast);
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem var(--primary-soft);
    border-color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 4px 6px -1px var(--primary-soft);
    transition: var(--transition-normal);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px -2px rgba(79, 70, 229, 0.25);
}

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

/* Sidebar (Desktop) */
.sidebar {
    width: var(--sidebar-width);
    background-color: #ffffff;
    border-right: 1px solid #e2e8f0;
    height: 100vh;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid #f1f5f9;
}

.brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-main);
}

.brand-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #818cf8 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    margin-right: 12px;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-menu {
    padding: 1.5rem 1rem;
    overflow-y: auto;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid #f1f5f9;
}

.menu-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
    color: #94a3b8;
    margin: 1.5rem 0 0.5rem 1rem;
    letter-spacing: 0.5px;
}

.menu-label:first-child {
    margin-top: 0;
}

.menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.menu-item {
    margin-bottom: 0.25rem;
}

.menu-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.menu-link:hover, .menu-item.active .menu-link {
    background-color: var(--primary-soft);
    color: var(--primary-color);
}

.menu-icon {
    font-size: 1.25rem;
    margin-right: 12px;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.menu-item.active .menu-icon, .menu-link:hover .menu-icon {
    opacity: 1;
}

.logout-link:hover {
    background-color: var(--danger-soft);
    color: var(--danger-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    background-color: var(--bg-color);
}

.topbar {
    height: var(--topbar-height);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
}

.mobile-brand {
    font-size: 1.75rem;
    color: var(--primary-color);
    text-decoration: none;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-main);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-bar {
    position: relative;
    width: 300px;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}

.search-bar input {
    width: 100%;
    background-color: #f1f5f9;
    border: 1px solid transparent;
    border-radius: 20px;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.search-bar input:focus {
    outline: none;
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.notification-icon {
    position: relative;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

.notification-icon:hover {
    color: var(--primary-color);
}

.notification-icon .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--danger-color);
    color: white;
    font-size: 0.65rem;
    padding: 0.25rem 0.4rem;
    border-radius: 50%;
    border: 2px solid #fff;
}

.profile-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-info .name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-main);
}

.user-info .role {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

/* Content Area */
.content-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    padding-bottom: 5rem; /* padding for mobile nav */
}

/* Dashboard Cards */
.stat-card {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.stat-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

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

.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-danger { color: var(--danger-color) !important; }

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-main);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
    font-weight: 500;
}

.dashboard-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #e2e8f0;
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
}

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

.timeline-icon {
    position: absolute;
    left: -2rem;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    transform: translateX(-50%);
    border: 3px solid #fff;
    box-shadow: 0 0 0 1px #e2e8f0;
}

.timeline-content {
    background-color: #f8fafc;
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
}

.timeline-content h6 {
    font-size: 0.9rem;
    font-weight: 600;
}

.timeline-time {
    font-size: 0.75rem;
    color: #94a3b8;
    position: absolute;
    top: -20px;
    right: 0;
}

/* Mobile Nav Bottom */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
}

.mobile-bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.mobile-bottom-nav .nav-item i {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.mobile-bottom-nav .nav-item.active {
    color: var(--primary-color);
}

.mobile-bottom-nav .nav-item.active i {
    transform: translateY(-2px);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    z-index: 999;
    transition: transform var(--transition-fast);
}

.fab:active {
    transform: scale(0.9);
}

/* Responsive */
@media (max-width: 991.98px) {
    .content-wrapper {
        padding: 1rem;
        padding-bottom: 80px;
    }
    
    .topbar {
        padding: 0 1rem;
    }
}

/* Mobile Bottom Sheet Drawer */
.mobile-bottom-sheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-bottom-sheet-overlay.show {
    opacity: 1;
    visibility: visible;
}

.mobile-bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px 24px 0 0;
    box-shadow: 0 -10px 40px rgba(15, 23, 42, 0.15);
    z-index: 1060;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.mobile-bottom-sheet.show {
    transform: translateY(0);
}

.sheet-handle {
    width: 40px;
    height: 4px;
    background-color: #cbd5e1;
    border-radius: 2px;
    margin: 12px auto 8px auto;
}

.sheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem 1rem 1.5rem;
    border-bottom: 1px solid #f1f5f9;
}

.sheet-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

.sheet-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
}

.sheet-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex-grow: 1;
}

/* Shortcuts Grid styling */
.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.quick-link-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem 0.5rem;
    background: rgba(248, 250, 252, 0.75);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 16px;
    text-decoration: none;
    color: var(--text-main);
    transition: all var(--transition-normal);
}

.quick-link-card:active {
    transform: scale(0.95);
    background-color: var(--primary-soft);
}

.quick-link-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background-color: #fff;
    border: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.quick-link-card:hover .quick-link-icon {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.quick-link-text {
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-main);
}

/* Custom Scrollbar Design */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
    border: 2px solid #f8fafc;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* For Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 #f8fafc;
}

/* Quick Action Premium Buttons for Site Engineers */
.quick-action-btn {
    transition: all 0.25s ease-in-out;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
}

.quick-action-btn:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2) !important;
}

.bg-indigo-soft {
    background-color: rgba(99, 102, 241, 0.1) !important;
}

.text-indigo {
    color: #4f46e5 !important;
}

.bg-light-hover {
    transition: all 0.2s ease;
}

.bg-light-hover:hover {
    background-color: #f1f5f9 !important;
}