/* ==========================================================================
   NilaGuard PKM BIMA - Design System & Modern Glassmorphic Dashboard Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Main Aesthetics Palette */
    --bg-dark: #070d19;
    --bg-dark-elevated: #0f172a;
    --bg-gradient: radial-gradient(circle at 15% 15%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
                    radial-gradient(circle at 85% 75%, rgba(99, 102, 241, 0.10) 0%, transparent 50%),
                    linear-gradient(135deg, #060b17 0%, #0f172a 60%, #091122 100%);
    
    --sidebar-bg: rgba(11, 19, 43, 0.85);
    --card-bg: rgba(15, 23, 42, 0.65);
    --card-bg-hover: rgba(30, 41, 59, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-border-glow: rgba(56, 189, 248, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Sensor Parameter Color Tokens */
    --temp-color: #ff6b6b;
    --temp-glow: rgba(255, 107, 107, 0.25);
    
    --ph-color: #38bdf8;
    --ph-glow: rgba(56, 189, 248, 0.25);
    
    --turb-color: #facc15;
    --turb-glow: rgba(250, 204, 21, 0.25);
    
    --nh3-color: #c084fc;
    --nh3-glow: rgba(192, 132, 252, 0.25);
    
    /* Threshold Status Colors */
    --color-normal: #10b981;
    --color-normal-bg: rgba(16, 185, 129, 0.12);
    
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.12);
    
    --shadow-soft: 0 12px 35px -5px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.15);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.6);
}
::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(56, 189, 248, 0.5);
}

/* Mobile Header Bar */
.mobile-topbar {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(11, 19, 43, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.mobile-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.menu-toggle-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.5rem 0.8rem;
    border-radius: 10px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.menu-toggle-btn:hover {
    background: var(--ph-color);
    color: #fff;
}

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

/* Sidebar */
.sidebar {
    width: 270px;
    background: var(--sidebar-bg);
    backdrop-filter: blur(16px);
    border-right: 1px solid var(--card-border);
    padding: 2.2rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
    z-index: 90;
    transition: var(--transition-smooth);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--card-border);
}

.logo-icon-wrapper {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(99, 102, 241, 0.2));
    border: 1px solid rgba(56, 189, 248, 0.4);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--ph-color);
}

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

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff 30%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtext {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1.1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-item i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(56, 189, 248, 0.15) 0%, rgba(56, 189, 248, 0.03) 100%);
    color: var(--ph-color);
    border-left: 3px solid var(--ph-color);
    box-shadow: inset 0 0 12px rgba(56, 189, 248, 0.1);
}

/* Sidebar Footer & Connection Card */
.sidebar-footer {
    border-top: 1px solid var(--card-border);
    padding-top: 1.5rem;
    font-size: 0.85rem;
}

.connection-card {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1rem;
}

.conn-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.conn-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.88rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    position: relative;
}

.status-indicator.online .status-dot {
    background-color: var(--color-normal);
    box-shadow: 0 0 10px var(--color-normal);
}

.status-indicator.online .status-dot::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    border: 2px solid var(--color-normal);
    animation: ripple 2s infinite ease-out;
}

.status-indicator.offline .status-dot {
    background-color: var(--color-danger);
    box-shadow: 0 0 10px var(--color-danger);
}

.last-update-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
    display: block;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    padding: 2.5rem 3rem;
    overflow-y: auto;
    max-width: 1600px;
    margin: 0 auto;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.header-title h1 {
    font-size: 2.1rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    color: #ffffff;
    margin-bottom: 0.3rem;
}

.header-title .subtitle {
    color: var(--text-secondary);
    font-size: 0.98rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-time-pill {
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    padding: 0.7rem 1.4rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.header-time-pill i {
    color: var(--ph-color);
}

/* Water Quality Index Banner */
.quality-banner {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(14, 165, 233, 0.08) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    backdrop-filter: blur(14px);
    border-radius: 20px;
    padding: 1.25rem 1.8rem;
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    transition: var(--transition-smooth);
}

.quality-banner.banner-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(239, 68, 68, 0.08) 100%);
    border-color: rgba(245, 158, 11, 0.35);
}

.quality-banner.banner-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.18) 0%, rgba(192, 132, 252, 0.10) 100%);
    border-color: rgba(239, 68, 68, 0.4);
}

.banner-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.banner-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.banner-title-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.banner-status-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
}

.banner-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* Metric Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
    margin-bottom: 3rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 1.6rem;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
}

.card-temp::before { background: linear-gradient(90deg, #ff6b6b, #ff8e8e); }
.card-ph::before { background: linear-gradient(90deg, #38bdf8, #818cf8); }
.card-turb::before { background: linear-gradient(90deg, #facc15, #fbbf24); }
.card-nh3::before { background: linear-gradient(90deg, #c084fc, #e879f9); }

.card:hover {
    transform: translateY(-6px);
    background: var(--card-bg-hover);
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: var(--shadow-soft), var(--shadow-glow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.card-label-group {
    display: flex;
    flex-direction: column;
}

.card-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-target-range {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.15rem;
}

.icon-circle {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: var(--transition-smooth);
}

.icon-temp { background-color: var(--temp-glow); color: var(--temp-color); }
.icon-ph { background-color: var(--ph-glow); color: var(--ph-color); }
.icon-turb { background-color: var(--turb-glow); color: var(--turb-color); }
.icon-nh3 { background-color: var(--nh3-glow); color: var(--nh3-color); }

.card:hover .icon-circle {
    transform: scale(1.1) rotate(5deg);
}

.card-value-container {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.card-value {
    font-size: 3.1rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: #ffffff;
}

.card-unit {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Range Visual Progress Bar */
.range-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    margin-bottom: 1.25rem;
    overflow: hidden;
    position: relative;
}

.range-bar-fill {
    height: 100%;
    border-radius: 10px;
    transition: width 0.6s ease-out, background-color 0.4s ease;
    width: 0%;
}

.card-temp .range-bar-fill { background: var(--temp-color); }
.card-ph .range-bar-fill { background: var(--ph-color); }
.card-turb .range-bar-fill { background: var(--turb-color); }
.card-nh3 .range-bar-fill { background: var(--nh3-color); }

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

.status-badge {
    padding: 0.4rem 0.9rem;
    border-radius: 30px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.2px;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-smooth);
}

.badge-normal {
    background-color: var(--color-normal-bg);
    color: var(--color-normal);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    animation: pulseDanger 1.8s infinite;
}

/* Charts Section */
.charts-section {
    margin-bottom: 3rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-title-group {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.section-header h2 {
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.info-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 1.75rem;
}

.chart-container {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.chart-container:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.chart-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 300px;
}

/* Table Section */
.table-section {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

.table-action-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-action {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.65rem 1.25rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-action:hover {
    background-color: var(--ph-color);
    color: #fff;
    border-color: var(--ph-color);
    box-shadow: 0 0 18px rgba(56, 189, 248, 0.4);
    transform: translateY(-2px);
}

.btn-action i.spin {
    animation: spin 1s linear infinite;
}

.btn-export {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-normal);
}

.btn-export:hover {
    background-color: var(--color-normal);
    color: #fff;
    border-color: var(--color-normal);
    box-shadow: 0 0 18px rgba(16, 185, 129, 0.4);
}

.table-wrapper {
    overflow-x: auto;
    margin-top: 1.25rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    white-space: nowrap;
}

.data-table th {
    padding: 1.1rem 1.25rem;
    background: rgba(11, 19, 43, 0.7);
    border-bottom: 2px solid var(--card-border);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background-color 0.2s ease;
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.td-mono {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

.status-chip {
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-block;
}

.status-chip.chip-normal {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-normal);
}

.status-chip.chip-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.status-chip.chip-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.no-data {
    text-align: center;
    color: var(--text-muted);
    padding: 3.5rem !important;
    font-style: italic;
}

/* Animations */
@keyframes spin {
    100% { transform: rotate(360deg); }
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(2.2); opacity: 0; }
}

@keyframes pulseDanger {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .main-content {
        padding: 2rem;
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .mobile-topbar {
        display: flex;
    }
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        position: fixed;
        top: 60px;
        left: -280px;
        bottom: 0;
        width: 270px;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }
    .sidebar.open {
        left: 0;
    }
    .main-content {
        padding: 1.5rem;
    }
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    .cards-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 580px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
    .table-action-group {
        width: 100%;
        justify-content: flex-start;
    }
    .quality-banner {
        flex-direction: column;
        align-items: flex-start;
    }
}