:root {
    /* Minimalist Water Bubble Glassmorphism Palette */
    --primary: #F03164; 
    --secondary: #2C2C35;
    --accent: #F472B6;
    
    --bg-color: #E2E8F0; 
    
    /* Water Bubble Effect Shadows */
    --bubble-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.05), 
        inset 0 0 20px rgba(255, 255, 255, 0.4), 
        inset 1px 1px 2px rgba(255, 255, 255, 0.8),
        inset -1px -1px 3px rgba(0, 0, 0, 0.03);
        
    --bubble-shadow-hover: 
        0 15px 40px rgba(0, 0, 0, 0.08), 
        inset 0 0 25px rgba(255, 255, 255, 0.7), 
        inset 2px 2px 4px rgba(255, 255, 255, 1),
        inset -1px -1px 3px rgba(0, 0, 0, 0.02);

    --bubble-shadow-small: 
        0 5px 15px rgba(0, 0, 0, 0.03), 
        inset 0 0 10px rgba(255, 255, 255, 0.4), 
        inset 1px 1px 2px rgba(255, 255, 255, 0.7);

    /* Latar belakang transparan dengan efek cahaya miring (khas gelembung) */
    --glass-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.05) 100%);
    --glass-bg-hover: linear-gradient(135deg, rgba(255, 255, 255, 0.55) 0%, rgba(255, 255, 255, 0.1) 100%);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    --white: #FFFFFF;
    --danger: #F43F5E;
    --success: #10B981;
    --warning: #F59E0B;
    
    --text-main: #4B5563;
    --text-muted: #9CA3AF;
    
    --sidebar-width-collapsed: 96px;
    --sidebar-width-expanded: 290px;
    --topbar-height: 90px;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--text-main);
    margin: 0;
    overflow-x: hidden;
    /* Soft Mesh Gradient Background for Glassmorphism */
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 10% 20%, hsla(339, 100%, 88%, 0.5) 0px, transparent 50%),
        radial-gradient(at 80% 10%, hsla(189, 100%, 88%, 0.5) 0px, transparent 50%),
        radial-gradient(at 40% 80%, hsla(339, 100%, 88%, 0.4) 0px, transparent 50%),
        radial-gradient(at 90% 90%, hsla(280, 100%, 88%, 0.4) 0px, transparent 50%);
    background-attachment: fixed;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Collapsible Glass Sidebar */
.sidebar {
    width: var(--sidebar-width-collapsed);
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    position: fixed;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: hidden;
}

.sidebar:hover {
    width: var(--sidebar-width-expanded);
    box-shadow: 10px 0 30px rgba(0,0,0,0.05);
}

.sidebar:hover .sidebar-menu {
    overflow-y: auto;
}

.sidebar-header {
    padding: 35px 28px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: var(--sidebar-width-expanded);
}

.sidebar-header .brand-icon {
    color: var(--primary);
    font-size: 32px;
    font-weight: 300;
}

.sidebar-menu {
    list-style: none;
    padding: 10px 20px;
    margin: 0;
    flex-grow: 1;
    overflow: hidden;
}

.sidebar-menu li {
    margin-bottom: 12px;
}

.sidebar-menu a {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 500;
    padding: 14px 16px;
    border-radius: 40px; 
    transition: all 0.3s ease;
    font-size: 0.95rem;
    white-space: nowrap;
    box-sizing: border-box;
    width: calc(var(--sidebar-width-expanded) - 40px);
}

.sidebar-menu a:hover {
    color: var(--primary);
    background: rgba(255, 255, 255, 0.3);
}

.sidebar-menu a.active {
    background: var(--glass-bg);
    color: var(--primary);
    font-weight: 600;
    box-shadow: var(--bubble-shadow-small);
    border: 1px solid var(--glass-border);
}

.sidebar-menu a .material-symbols-outlined {
    font-size: 24px;
    min-width: 24px;
}

.nav-text {
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform: translateX(-10px);
}

.sidebar:hover .nav-text {
    opacity: 1;
    transform: translateX(0);
}

/* Sidebar Bottom Call to Action */
.sidebar-cta {
    margin: 20px;
    padding: 20px;
    background: var(--glass-bg);
    border-radius: 30px;
    text-align: center;
    border: 1px solid var(--glass-border);
    box-shadow: var(--bubble-shadow-small);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    transform: translateY(20px);
    width: calc(var(--sidebar-width-expanded) - 40px);
    box-sizing: border-box;
}

.sidebar:hover .sidebar-cta {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sidebar-cta p {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 500;
}

.sidebar-cta .btn-cta {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 10px 16px;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.85rem;
    width: 100%;
    transition: 0.3s;
    white-space: nowrap;
}

.sidebar-cta .btn-cta:hover {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(240, 49, 100, 0.2);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width-collapsed);
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: margin-left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: transparent;
    padding: 0 45px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 999;
}

.search-bar {
    position: relative;
    width: 380px;
}

.search-bar input {
    width: 100%;
    padding: 12px 20px 12px 48px;
    border-radius: 40px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: var(--bubble-shadow-small);
    outline: none;
    transition: 0.3s;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.9rem;
    color: var(--text-main);
}

.search-bar input:focus {
    background: rgba(255,255,255,0.7);
    border-color: rgba(240, 49, 100, 0.3);
}

.search-bar .material-symbols-outlined {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 22px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 22px;
}

.topbar-icon {
    color: var(--text-muted);
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--bubble-shadow-small);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
    position: relative;
}

.topbar-icon:hover {
    color: var(--primary);
    transform: translateY(-2px);
    background: rgba(255,255,255,0.6);
}

.topbar-icon .badge {
    position: absolute;
    top: 0px;
    right: 0px;
    background: var(--primary);
    color: white;
    font-size: 0.65rem;
    padding: 4px 6px;
    border-radius: 50%;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    padding: 6px 14px 6px 6px;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    box-shadow: var(--bubble-shadow-small);
    transition: 0.3s;
}

.user-profile:hover {
    transform: translateY(-2px);
    background: rgba(255,255,255,0.6);
}

.user-profile img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
}

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

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--secondary);
}

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

/* Content Area */
.content-area {
    padding: 10px 45px 45px 45px;
    overflow-y: auto;
    height: calc(100vh - var(--topbar-height));
}

/* Page fade-up animation */
.fade-up {
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

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

/* Water Bubble Transparent Cards */
.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 36px; 
    padding: 24px 28px;
    box-shadow: var(--bubble-shadow); 
    border: 1px solid var(--glass-border);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 40px; 
    padding: 30px;
    box-shadow: var(--bubble-shadow); 
    border: 1px solid var(--glass-border);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, background 0.3s ease;
    margin-bottom: 24px;
}

/* Hover Lift, Brightness, and Expand Shadow */
.stat-card:hover, .panel-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--bubble-shadow-hover);
    background: var(--glass-bg-hover);
}

.stat-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-info h6 {
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
}

.stat-info h3 {
    font-weight: 600;
    font-size: 2.2rem;
    margin: 0;
    color: var(--secondary);
    line-height: 1.1;
    margin-bottom: 12px;
}

/* Charts & Map Cards */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.panel-title {
    font-weight: 500;
    font-size: 1.15rem;
    color: var(--secondary);
    margin: 0;
}

/* Map specific */
#global-map {
    height: 420px;
    border-radius: 20px;
    z-index: 1;
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
}

.custom-div-icon {
    background: transparent;
    border: none;
}

/* Animated Ship Markers for Map */
.custom-ship-marker {
    background: var(--primary);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(240, 49, 100, 0.5);
    transition: all 1.5s ease-in-out;
}
.custom-ship-marker.transit { background: #5DAEFF; box-shadow: 0 4px 12px rgba(93, 174, 255, 0.5); }
.custom-ship-marker.delayed { background: var(--danger); box-shadow: 0 4px 12px rgba(244, 63, 94, 0.5); }

/* Utilities */
.text-success-custom { color: var(--success); font-weight: 500; font-size: 0.8rem; }
.text-danger-custom { color: var(--danger); font-weight: 500; font-size: 0.8rem; }

.alert-item-hover {
    transition: 0.3s;
    border-radius: 24px;
    padding: 16px;
    margin-left: -16px;
    margin-right: -16px;
    cursor: pointer;
}

.alert-item-hover:hover {
    background: rgba(255,255,255,0.6);
    box-shadow: var(--bubble-shadow-small);
    transform: translateX(4px);
}

/* Minimalist Button with Bubble Effect */
.btn-primary-custom {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--primary);
    border: 1px solid var(--glass-border);
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: 500;
    font-size: 0.95rem;
    box-shadow: var(--bubble-shadow-small);
    transition: 0.3s;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    background: var(--primary);
    color: white;
    box-shadow: 0 5px 15px rgba(240, 49, 100, 0.3);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent; 
}
::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.1); 
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0,0,0,0.2); 
}

@keyframes pulse-alert {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(240, 49, 100, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(240, 49, 100, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(240, 49, 100, 0); }
}