/* ============================================================
   BOTANICAL INDUSTRIAL — Greenhouse Control System
   Design: NASA mission control meets botanical garden
   ============================================================ */

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

/* --- Design Tokens --- */
:root {
    /* Surface */
    --bg-deep: #080c0f;
    --bg-primary: #0d1117;
    --bg-card: rgba(17, 24, 32, 0.85);
    --bg-card-hover: rgba(22, 32, 44, 0.95);
    --bg-elevated: rgba(30, 42, 56, 0.6);
    --bg-input: rgba(12, 18, 26, 0.8);

    /* Borders */
    --border-subtle: rgba(56, 80, 104, 0.25);
    --border-medium: rgba(56, 80, 104, 0.45);
    --border-accent: rgba(72, 210, 143, 0.35);

    /* Text */
    --text-primary: #e8edf3;
    --text-secondary: #8899aa;
    --text-muted: #556677;
    --text-accent: #48d28f;

    /* Status Colors */
    --green: #48d28f;
    --green-dim: rgba(72, 210, 143, 0.12);
    --green-glow: rgba(72, 210, 143, 0.25);
    --blue: #4facfe;
    --blue-dim: rgba(79, 172, 254, 0.12);
    --yellow: #ffd166;
    --yellow-dim: rgba(255, 209, 102, 0.12);
    --red: #ff6b6b;
    --red-dim: rgba(255, 107, 107, 0.12);
    --red-glow: rgba(255, 107, 107, 0.25);
    --orange: #ffa94d;
    --orange-dim: rgba(255, 169, 77, 0.12);
    --purple: #b197fc;
    --purple-dim: rgba(177, 151, 252, 0.12);
    --cyan: #66d9e8;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3), 0 0 1px rgba(56, 80, 104, 0.2);
    --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow-green: 0 0 20px rgba(72, 210, 143, 0.15), 0 0 60px rgba(72, 210, 143, 0.05);
    --shadow-glow-red: 0 0 20px rgba(255, 107, 107, 0.15);

    /* Fonts */
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-mono: 'DM Mono', 'Fira Code', monospace;

    /* Transitions */
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Subtle grid texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        linear-gradient(rgba(72, 210, 143, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(72, 210, 143, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* Ambient gradient */
body::after {
    content: '';
    position: fixed;
    top: -30%;
    right: -20%;
    width: 70%;
    height: 70%;
    background: radial-gradient(ellipse, rgba(72, 210, 143, 0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* --- Layout Shell --- */
.app-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Top Navigation Bar --- */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: rgba(13, 17, 23, 0.92);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--green), #2a9d6e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    box-shadow: 0 0 12px rgba(72, 210, 143, 0.2);
}

.topbar-title {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.topbar-subtitle {
    font-size: 0.73rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Navigation Tabs */
.topbar-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 100%;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 0 16px;
    height: 100%;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all 0.2s var(--ease-out);
    position: relative;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.nav-tab.active {
    color: var(--green);
    border-bottom-color: var(--green);
}

.nav-tab svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.nav-tab.active svg {
    opacity: 1;
}

/* Status indicator */
.topbar-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    font-weight: 400;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.3s;
}

.status-indicator.online {
    background: var(--green);
    box-shadow: 0 0 8px var(--green-glow);
    animation: pulse-dot 2s ease-in-out infinite;
}

.status-indicator.offline {
    background: var(--red);
    box-shadow: 0 0 8px var(--red-glow);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    color: var(--text-secondary);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    max-width: 1320px;
    width: 100%;
    margin: 0 auto;
    padding: 24px;
}

/* Page header */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.page-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Section titles */
.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-subtle);
}

/* --- Card Base --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-card);
    transition: all 0.3s var(--ease-out);
}

.card:hover {
    border-color: var(--border-medium);
    background: var(--bg-card-hover);
}

/* ============================================================
   SENSOR CARDS
   ============================================================ */
.sensors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.sensor-card {
    position: relative;
    overflow: hidden;
}

.sensor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transition: background 0.5s;
}

.sensor-card[data-status="good"]::before { background: var(--green); }
.sensor-card[data-status="warn"]::before { background: var(--yellow); }
.sensor-card[data-status="cold"]::before { background: var(--blue); }
.sensor-card[data-status="hot"]::before { background: var(--red); }
.sensor-card[data-status="none"]::before { background: var(--text-muted); }

.sensor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.sensor-label {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sensor-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.3s;
}

.sensor-icon.temp { background: var(--red-dim); }
.sensor-icon.hum { background: var(--blue-dim); }
.sensor-icon.co2 { background: var(--purple-dim); }

.sensor-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.sensor-badge {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    padding: 3px 8px;
    border-radius: 99px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sensor-badge.good { background: var(--green-dim); color: var(--green); }
.sensor-badge.warn { background: var(--yellow-dim); color: var(--yellow); }
.sensor-badge.cold { background: var(--blue-dim); color: var(--blue); }
.sensor-badge.hot { background: var(--red-dim); color: var(--red); }
.sensor-badge.none { background: rgba(85,102,119,0.15); color: var(--text-muted); }

/* Big value readout */
.sensor-readout {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 14px;
}

.sensor-value {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-display);
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    transition: color 0.5s;
}

.sensor-unit {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Gauge bar */
.sensor-gauge {
    position: relative;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.sensor-gauge-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.8s var(--ease-out), background 0.5s;
    position: relative;
}

.sensor-gauge-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: -2px;
    width: 2px;
    height: 10px;
    background: inherit;
    border-radius: 1px;
    filter: brightness(1.3);
}

.gauge-good { background: var(--green); }
.gauge-warn { background: var(--yellow); }
.gauge-cold { background: var(--blue); }
.gauge-hot { background: var(--red); }

.sensor-range {
    display: flex;
    justify-content: space-between;
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    letter-spacing: 0.03em;
}

/* --- Sparkline inside sensor card --- */
.sensor-sparkline {
    margin-top: 14px;
    border-top: 1px solid var(--border-subtle);
    padding-top: 12px;
}

.sensor-sparkline canvas {
    width: 100% !important;
    height: 52px !important;
    min-height: 52px;
    display: block;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.02);
}

.sparkline-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 6px;
}

.sparkline-label {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sparkline-minmax {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.03em;
}

/* Breathing animation for active readings */
@keyframes breathe {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

.sensor-card[data-status="good"] .sensor-value {
    animation: breathe 4s ease-in-out infinite;
}

/* ============================================================
   ACTUATOR CARDS
   ============================================================ */
.actuators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(195px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.actuator-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 14px 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
    cursor: default;
}

.actuator-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
    background: radial-gradient(ellipse at 50% 0%, var(--green-glow) 0%, transparent 70%);
}

.actuator-card.active::after {
    opacity: 1;
}

.actuator-card.active {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-glow-green);
}

/* Actuator icon circle */
.actuator-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 10px;
    transition: all 0.35s var(--ease-out);
}

.actuator-card.active .actuator-icon {
    background: var(--green-dim);
    border-color: var(--border-accent);
    box-shadow: 0 0 16px var(--green-glow);
    transform: scale(1.05);
}

/* Spinning animation for fans */
.actuator-card.active .actuator-icon.fan-icon {
    animation: spin-fan 2s linear infinite;
}

@keyframes spin-fan {
    from { transform: scale(1.05) rotate(0deg); }
    to { transform: scale(1.05) rotate(360deg); }
}

.actuator-name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
    letter-spacing: 0.02em;
}

.actuator-state {
    font-size: 0.7rem;
    font-family: var(--font-mono);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
    transition: color 0.3s;
}

.actuator-card.active .actuator-state {
    color: var(--green);
}

/* Toggle button */
.actuator-toggle {
    display: flex;
    gap: 6px;
}

.btn {
    padding: 6px 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: transparent;
    color: var(--text-secondary);
    outline: none;
}

.btn:active {
    transform: scale(0.96);
}

.btn-on {
    color: var(--green);
    border-color: rgba(72, 210, 143, 0.25);
}

.btn-on:hover {
    background: var(--green-dim);
    border-color: rgba(72, 210, 143, 0.45);
    box-shadow: 0 0 12px rgba(72, 210, 143, 0.1);
}

.btn-off {
    color: var(--red);
    border-color: rgba(255, 107, 107, 0.25);
}

.btn-off:hover {
    background: var(--red-dim);
    border-color: rgba(255, 107, 107, 0.45);
}

/* ============================================================
   HISTORY CHART (mini sparkline area)
   ============================================================ */
.chart-section {
    margin-bottom: 28px;
}

.chart-container {
    position: relative;
    height: 200px;
    padding: 16px 20px;
}

.chart-canvas {
    width: 100%;
    height: 100%;
}

.chart-legend {
    display: flex;
    gap: 20px;
    padding: 0 20px 16px;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.chart-legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* ============================================================
   DIAGNOSTICS PAGE
   ============================================================ */

/* Health cards */
.health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.health-card {
    display: flex;
    align-items: center;
    gap: 16px;
}

.health-indicator {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.health-indicator.healthy {
    background: var(--green-dim);
    border: 1px solid rgba(72, 210, 143, 0.3);
}

.health-indicator.warning {
    background: var(--yellow-dim);
    border: 1px solid rgba(255, 209, 102, 0.3);
}

.health-indicator.error {
    background: var(--red-dim);
    border: 1px solid rgba(255, 107, 107, 0.3);
}

.health-info h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.health-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

/* Event log table */
.event-log {
    width: 100%;
    border-collapse: collapse;
}

.event-log th {
    text-align: left;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle);
}

.event-log td {
    font-size: 0.82rem;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(56, 80, 104, 0.12);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-weight: 300;
}

.event-log tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.event-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.event-tag.on { background: var(--green-dim); color: var(--green); }
.event-tag.off { background: var(--red-dim); color: var(--red); }
.event-tag.auto { background: var(--blue-dim); color: var(--blue); }
.event-tag.manual { background: var(--orange-dim); color: var(--orange); }

/* ============================================================
   SETTINGS PAGE
   ============================================================ */
.settings-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
}

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

.settings-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: transparent;
    text-align: left;
    font-family: var(--font-display);
    width: 100%;
}

.settings-nav-item:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.settings-nav-item.active {
    background: var(--green-dim);
    color: var(--green);
}

.settings-nav-item svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

.settings-panel {
    display: none;
}

.settings-panel.active {
    display: block;
}

/* Form elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-family: var(--font-mono);
}

.form-input,
.form-select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(72, 210, 143, 0.1);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238899aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Threshold cards */
.threshold-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.threshold-card {
    padding: 16px;
}

.threshold-card h4 {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.threshold-values {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.threshold-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.threshold-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.threshold-input {
    width: 80px;
    padding: 6px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: var(--font-mono);
    text-align: right;
    outline: none;
}

.threshold-input:focus {
    border-color: var(--green);
}

/* Save button */
.btn-primary {
    padding: 10px 24px;
    background: var(--green);
    color: var(--bg-deep);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    letter-spacing: 0.02em;
}

.btn-primary:hover {
    background: #5be0a0;
    box-shadow: 0 0 20px rgba(72, 210, 143, 0.25);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: 10px 24px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 500;
    font-family: var(--font-display);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    border-color: var(--border-medium);
    color: var(--text-primary);
}

/* ============================================================
   ALERT / TOAST
   ============================================================ */
.toast-container {
    position: fixed;
    top: 68px;
    right: 24px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-elevated);
    animation: toast-in 0.3s var(--ease-spring);
    max-width: 360px;
}

.toast.success {
    background: rgba(17, 24, 32, 0.95);
    border: 1px solid rgba(72, 210, 143, 0.4);
    color: var(--green);
}

.toast.error {
    background: rgba(17, 24, 32, 0.95);
    border: 1px solid rgba(255, 107, 107, 0.4);
    color: var(--red);
}

.toast.warning {
    background: rgba(17, 24, 32, 0.95);
    border: 1px solid rgba(255, 209, 102, 0.4);
    color: var(--yellow);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes toast-out {
    to {
        opacity: 0;
        transform: translateX(40px) scale(0.95);
    }
}

/* ============================================================
   PAGE LOAD ANIMATION
   ============================================================ */
.fade-in {
    animation: fade-up 0.5s var(--ease-out) both;
}

.fade-in:nth-child(1) { animation-delay: 0.05s; }
.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.15s; }
.fade-in:nth-child(4) { animation-delay: 0.2s; }
.fade-in:nth-child(5) { animation-delay: 0.25s; }

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .sensors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .settings-layout {
        grid-template-columns: 1fr;
    }
    .settings-nav {
        flex-direction: row;
        overflow-x: auto;
    }
}

@media (max-width: 768px) {
    .topbar {
        padding: 0 16px;
        height: 52px;
    }
    .topbar-subtitle {
        display: none;
    }
    .nav-tab span {
        display: none;
    }
    .nav-tab {
        padding: 0 12px;
    }
    .main-content {
        padding: 16px;
    }
    .sensors-grid {
        grid-template-columns: 1fr;
    }
    .actuators-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .sensor-value {
        font-size: 2.4rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .actuators-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .actuator-card {
        padding: 14px 10px 12px;
    }
    .actuator-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   UTILITY
   ============================================================ */
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-blue { color: var(--blue); }
.text-yellow { color: var(--yellow); }
.text-muted { color: var(--text-muted); }
.text-mono { font-family: var(--font-mono); }

.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.gap-row { display: flex; gap: 12px; align-items: center; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
}

.empty-state p {
    font-size: 0.85rem;
}