/* ============================================================
   ECHO-GLANCE - Global Stylesheet
   Dual-Layer Eye Blink Messenger IoT Dashboard
   ============================================================ */

/* === GOOGLE FONTS === */
@import url('https://fonts.googleapis.com/css2?family=Work+Sans:wght@500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* === CSS RESET === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* === DESIGN TOKENS === */
:root {
    /* Brand Colors */
    --color-primary: #2541B2;
    --color-primary-dark: #1B2A6B;
    --color-primary-light: #3B5CE4;
    --color-primary-surface: rgba(37, 65, 178, 0.08);
    --color-accent: #F2721E;
    --color-accent-light: #FF8A3D;
    --color-accent-surface: rgba(242, 114, 30, 0.08);

    /* Neutrals */
    --color-bg: #F0F2F8;
    --color-bg-alt: #E8EBF5;
    --color-card: #FFFFFF;
    --color-text: #1A1A2E;
    --color-text-muted: #6B7280;
    --color-text-light: #9CA3AF;
    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;

    /* Semantic Colors */
    --color-success: #16A34A;
    --color-success-surface: rgba(22, 163, 74, 0.1);
    --color-warning: #D97706;
    --color-warning-surface: rgba(217, 119, 6, 0.1);
    --color-danger: #DC2626;
    --color-danger-surface: rgba(220, 38, 38, 0.1);
    --color-info: #2563EB;
    --color-info-surface: rgba(37, 99, 235, 0.1);

    /* Typography */
    --font-display: 'Work Sans', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(27, 42, 107, 0.06);
    --shadow-md: 0 4px 12px rgba(27, 42, 107, 0.08);
    --shadow-lg: 0 8px 30px rgba(27, 42, 107, 0.12);
    --shadow-xl: 0 20px 60px rgba(27, 42, 107, 0.15);
    --shadow-glow-primary: 0 0 20px rgba(37, 65, 178, 0.3);
    --shadow-glow-accent: 0 0 20px rgba(242, 114, 30, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === BASE === */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--color-text);
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
}

.label-small {
    font-family: var(--font-body);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.text-muted {
    color: var(--color-text-muted);
}

.text-accent {
    color: var(--color-accent);
}

.text-primary {
    color: var(--color-primary);
}

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

a:hover {
    color: var(--color-primary-light);
}

/* === LAYOUT === */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.page-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--space-xl);
    margin-left: 260px;
    min-height: 100vh;
    transition: margin-left var(--transition-base);
}

/* === CARD === */
.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.card-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}

.card-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-header .card-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.card-icon-primary {
    background: var(--color-primary-surface);
    color: var(--color-primary);
}

.card-icon-accent {
    background: var(--color-accent-surface);
    color: var(--color-accent);
}

.card-icon-success {
    background: var(--color-success-surface);
    color: var(--color-success);
}

.card-icon-danger {
    background: var(--color-danger-surface);
    color: var(--color-danger);
}

/* === STAT CARD === */
.stat-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    margin: var(--space-sm) 0;
}

.stat-card .stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1.4;
    white-space: nowrap;
}

.badge-aktif {
    background: var(--color-success-surface);
    color: var(--color-success);
}

.badge-aktif::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse-dot 2s ease-in-out infinite;
}

.badge-nonaktif {
    background: #F3F4F6;
    color: #6B7280;
}

.badge-nonaktif::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #9CA3AF;
}

.badge-urgent {
    background: var(--color-danger-surface);
    color: var(--color-danger);
}

.badge-warning {
    background: var(--color-warning-surface);
    color: var(--color-warning);
}

.badge-info {
    background: var(--color-info-surface);
    color: var(--color-info);
}

.badge-primary {
    background: var(--color-primary-surface);
    color: var(--color-primary);
}

.badge-layer1 {
    background: rgba(37, 65, 178, 0.1);
    color: #1B2A6B;
}

.badge-layer2 {
    background: rgba(242, 114, 30, 0.1);
    color: #C45B16;
}

.badge-role {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #FFFFFF;
    padding: 4px 14px;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    border: none;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(37, 65, 178, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: var(--shadow-glow-primary);
    color: #FFFFFF;
    transform: translateY(-1px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(242, 114, 30, 0.25);
}

.btn-accent:hover {
    box-shadow: var(--shadow-glow-accent);
    color: #FFFFFF;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-surface);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 0.5rem 0.75rem;
}

.btn-ghost:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

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

.btn-danger:hover {
    background: #B91C1C;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

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

.btn-success:hover {
    background: #15803D;
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* === FORM ELEMENTS === */
.form-group {
    margin-bottom: var(--space-lg);
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: var(--color-card);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-surface);
}

.form-input::placeholder {
    color: var(--color-text-light);
}

.form-input.error {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px var(--color-danger-surface);
}

.form-select {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: var(--color-card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95.7.7z'/%3E%3C/svg%3E") no-repeat right 1rem center;
    appearance: none;
    cursor: pointer;
    outline: none;
    transition: all var(--transition-fast);
}

.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-surface);
}

.form-error {
    font-size: 0.8125rem;
    color: var(--color-danger);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* === TABLES === */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table thead {
    background: var(--color-bg);
}

.table th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--color-primary-surface);
}

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

.table tbody tr.row-layer1 {
    background: rgba(37, 65, 178, 0.03);
}

.table tbody tr.row-layer2 {
    background: rgba(242, 114, 30, 0.03);
}

/* === PAGINATION === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: var(--space-lg);
}

.pagination .page-btn {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination .page-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination .page-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #FFFFFF;
}

.pagination .page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* === SIDEBAR === */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, #0F1A4A 100%);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
    transition: transform var(--transition-base);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.sidebar-logo .brand-name {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.03em;
}

.sidebar-logo .brand-tagline {
    font-size: 0.625rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-section-label {
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.35);
    padding: var(--space-md) var(--space-sm) var(--space-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 0.75rem var(--space-md);
    border-radius: var(--radius-md);
    color: rgba(255,255,255,0.65);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

.nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: #FFFFFF;
}

.nav-item.active {
    background: rgba(255,255,255,0.12);
    color: #FFFFFF;
    font-weight: 600;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    width: 3px;
    height: 24px;
    background: var(--color-accent);
    border-radius: 0 3px 3px 0;
}

.nav-item .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.sidebar-footer {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: auto;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm);
}

.sidebar-user .user-avatar {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.875rem;
}

.sidebar-user .user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user .user-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #FFFFFF;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-role {
    font-size: 0.6875rem;
    color: rgba(255,255,255,0.5);
    text-transform: capitalize;
}

/* === NOTIFICATION CARDS === */
.notif-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    background: var(--color-card);
    transition: all var(--transition-base);
    margin-bottom: var(--space-sm);
}

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

.notif-card.new {
    animation: pulse-ring 1.5s ease-out 3;
    border-color: var(--color-accent);
}

.notif-card .notif-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.125rem;
}

.notif-card .notif-content {
    flex: 1;
    min-width: 0;
}

.notif-card .notif-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2px;
}

.notif-card .notif-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.notif-card .notif-action {
    flex-shrink: 0;
}

/* Acknowledge Button - prominent for keluarga */
.btn-acknowledge {
    background: var(--color-success) !important;
    color: #fff !important;
    border: none !important;
    padding: 6px 14px !important;
    border-radius: var(--radius-md) !important;
    font-size: 0.75rem !important;
    font-weight: 600 !important;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(22, 163, 74, 0.3);
}

.btn-acknowledge:hover {
    background: var(--color-success-dark, #15803d) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4);
}

/* Urgency variants */
.notif-urgent .notif-icon { background: var(--color-danger-surface); color: var(--color-danger); }
.notif-warning .notif-icon { background: var(--color-warning-surface); color: var(--color-warning); }
.notif-info .notif-icon { background: var(--color-info-surface); color: var(--color-info); }
.notif-default .notif-icon { background: #F3F4F6; color: #6B7280; }

.notif-urgent { border-left: 3px solid var(--color-danger); }
.notif-warning { border-left: 3px solid var(--color-warning); }
.notif-info { border-left: 3px solid var(--color-info); }
.notif-default { border-left: 3px solid #D1D5DB; }

/* === STATUS INDICATOR === */
.status-device {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
}

.status-device .status-badge-lg {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-lg);
}

.status-badge-lg.aktif {
    background: var(--color-success-surface);
    color: var(--color-success);
    box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.4);
    animation: pulse-glow-green 2s ease-in-out infinite;
}

.status-badge-lg.tidak-aktif {
    background: #F3F4F6;
    color: #6B7280;
}

.sensor-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.sensor-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 4px;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    transition: all var(--transition-fast);
    overflow: hidden;
    flex: 1 1 80px;
    min-width: 80px;
}

.sensor-item:hover {
    background: var(--color-bg-alt);
}

.sensor-item .sensor-icon {
    font-size: 1.5rem;
}

.sensor-item .sensor-name {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-align: center;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sensor-item .sensor-status {
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.sensor-status.ok {
    background: var(--color-success-surface);
    color: var(--color-success);
}

.sensor-status.error {
    background: var(--color-danger-surface);
    color: var(--color-danger);
}

/* === FILTER BAR === */
.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.filter-bar .form-input,
.filter-bar .form-select {
    max-width: 200px;
}

.search-input-wrapper {
    position: relative;
}

.search-input-wrapper .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    pointer-events: none;
}

.search-input-wrapper .form-input {
    padding-left: 36px;
}

/* === CHART CONTAINER === */
.chart-container {
    position: relative;
    width: 100%;
    height: 320px;
    padding: var(--space-md);
}

.chart-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.chart-metric-card {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    text-align: center;
}

.chart-metric-card .metric-value {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
}

.chart-metric-card .metric-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* === MODAL === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-spring);
}

.modal-overlay.show .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.modal-header h3 {
    font-size: 1.125rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--color-bg);
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-danger-surface);
    color: var(--color-danger);
}

.modal-body {
    margin-bottom: var(--space-xl);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* === ALERT / TOAST === */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.alert-success {
    background: var(--color-success-surface);
    color: var(--color-success);
    border: 1px solid rgba(22, 163, 74, 0.2);
}

.alert-danger {
    background: var(--color-danger-surface);
    color: var(--color-danger);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.alert-warning {
    background: var(--color-warning-surface);
    color: var(--color-warning);
    border: 1px solid rgba(217, 119, 6, 0.2);
}

.alert-info {
    background: var(--color-info-surface);
    color: var(--color-info);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    transform: translateX(120%);
    transition: transform var(--transition-spring);
}

.toast.show {
    transform: translateX(0);
}

/* === EMPTY STATE === */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.4;
}

.empty-state .empty-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.empty-state .empty-desc {
    font-size: 0.875rem;
}

/* === ANIMATIONS === */
@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(242, 114, 30, 0.4); }
    70% { box-shadow: 0 0 0 12px rgba(242, 114, 30, 0); }
    100% { box-shadow: 0 0 0 0 rgba(242, 114, 30, 0); }
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@keyframes pulse-glow-green {
    0%, 100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(22, 163, 74, 0); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes scaleIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.animate-fadeInUp {
    animation: fadeInUp 0.5s ease both;
}

.animate-fadeIn {
    animation: fadeIn 0.4s ease both;
}

.animate-slideInRight {
    animation: slideInRight 0.4s ease both;
}

.animate-scaleIn {
    animation: scaleIn 0.3s var(--transition-spring) both;
}

/* Stagger delays for lists */
.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.3s; }

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* === UTILITY CLASSES === */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* === MOBILE MENU TOGGLE === */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    z-index: 200;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--color-primary-dark);
    border: none;
    color: #FFFFFF;
    font-size: 1.25rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
}

/* === MAIN FOOTER === */
.main-footer {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-light);
    font-size: 0.75rem;
    margin-left: 260px;
    transition: margin-left var(--transition-base);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding: var(--space-lg);
        padding-top: calc(var(--space-lg) + 60px);
    }

    .main-footer {
        margin-left: 0;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-overlay.show {
        display: block;
    }

    .chart-container {
        height: 260px;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }

    .main-content {
        padding: var(--space-md);
        padding-top: calc(var(--space-md) + 60px);
    }

    .card {
        padding: var(--space-md);
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-bar .form-input,
    .filter-bar .form-select {
        max-width: 100%;
    }

    .chart-container {
        height: 220px;
    }

    .sensor-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: var(--space-xs);
    }

    .table th,
    .table td {
        padding: 0.625rem 0.75rem;
        font-size: 0.8125rem;
    }
}

@media (max-width: 480px) {
    .btn-lg {
        width: 100%;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .modal {
        width: 95%;
        padding: var(--space-lg);
    }
}