/* ========================================================
   AI & IoT-Based Smart Water Quality Platform
   Modern High-Tech Responsive Stylesheet
   ======================================================== */

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

:root {
    --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Theme colors - Dark Default */
    --bg-primary: #0a0f1d;
    --bg-secondary: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-elevated: #283548;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(56, 189, 248, 0.3);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Semantic Accents */
    --accent-cyan: #06b6d4;
    --accent-blue: #3b82f6;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --accent-purple: #8b5cf6;

    --sidebar-width: 260px;
    --header-height: 68px;
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-surface: #f8fafc;
    --bg-surface-elevated: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-highlight: rgba(14, 165, 233, 0.3);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}

/* Layout Structure */
.app-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Sidebar */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.35);
}

.brand-text h1 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
    line-height: 1.2;
}

.brand-text span {
    font-size: 0.7rem;
    color: var(--accent-cyan);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 14px 12px;
    list-style: none;
    margin: 0;
}

.menu-category {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 12px 10px 6px;
}

.menu-item {
    margin-bottom: 3px;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.88rem;
    transition: var(--transition-smooth);
}

.menu-link:hover {
    color: var(--text-primary);
    background: rgba(56, 189, 248, 0.08);
}

.menu-link.active {
    color: #ffffff;
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.85), rgba(59, 130, 246, 0.85));
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.25);
}

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

/* Main Content Area */
.app-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--bg-primary);
    transition: margin 0.3s ease;
}

/* Header */
.app-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    backdrop-filter: blur(10px);
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.system-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-emerald);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-emerald);
    animation: pulseAnimation 1.6s infinite ease-in-out;
}

@keyframes pulseAnimation {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

.demo-badge-pill {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.4);
    color: #fbbf24;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Page Body Container */
.page-container {
    padding: 24px;
    flex: 1;
}

/* Dashboard Metric Cards */
.metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-highlight);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.metric-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.metric-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.metric-icon-box {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}

.metric-value-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 6px;
}

.metric-value {
    font-size: 1.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
    line-height: 1;
}

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

.metric-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* AI Score Card Specific */
.ai-score-card {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.12)), var(--bg-surface);
    border: 1px solid rgba(6, 182, 212, 0.35);
}

.ai-score-ring {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(90deg, #38bdf8, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: var(--font-mono);
}

/* Surface Container / Card Standard */
.water-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 22px;
    margin-bottom: 24px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.water-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

/* Charts Wrapper */
.chart-container {
    position: relative;
    width: 100%;
    min-height: 280px;
}

/* Status Badges */
.badge-status {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.badge-status.success {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-status.warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-status.danger {
    background: rgba(244, 63, 94, 0.15);
    color: #fb7185;
    border: 1px solid rgba(244, 63, 94, 0.3);
}

.badge-status.info {
    background: rgba(6, 182, 212, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Responsive Table */
.water-table {
    width: 100%;
    color: var(--text-primary);
    border-collapse: separate;
    border-spacing: 0 6px;
}

.water-table th {
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
}

.water-table td {
    background: var(--bg-surface-elevated);
    padding: 12px 14px;
    font-size: 0.85rem;
    vertical-align: middle;
}

.water-table tr td:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.water-table tr td:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

/* Progress / Tank Meter */
.tank-visual {
    height: 140px;
    width: 80px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(56, 189, 248, 0.4);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.tank-water {
    background: linear-gradient(180deg, #06b6d4, #2563eb);
    width: 100%;
    transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.75rem;
}

/* Form Controls Dark Mode */
.form-control, .form-select {
    background-color: var(--bg-surface-elevated) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 8px !important;
    font-size: 0.88rem !important;
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent-cyan) !important;
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2) !important;
}

/* Mobile Sidebar Toggle */
@media (max-width: 991px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    .app-sidebar.show {
        transform: translateX(0);
    }
    .app-main {
        margin-left: 0;
    }
}