:root {
  --primary: #111827;
  --primary-glow: rgba(17, 24, 39, 0.08);
  --bg-dark:#f4f4f4;
  --card-bg: #ffffff;
  --card-border: #e5e7eb;
  --text-main: #0f172a;
  --text-muted: #4b5563;
  --success: #10b981;
  --danger: #ef4444;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Outfit', sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Sidebar & Backdrop Styles */
.sidebar-toggle {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 99;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-main);
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.sliding-sidebar {
    position: fixed;
    top: 0;
    left: -350px; 
    width: 320px;
    height: 100vh;
    background: var(--card-bg);
    z-index: 1001;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 30px;
    box-shadow: 4px 0 15px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sliding-sidebar.active {
    left: 0;
}

.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(2px);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.sidebar-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.close-sidebar {
    align-self: flex-end;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-muted);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

.form-group select,
#kode-pupuk {
    padding: 12px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    background: var(--bg-dark);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    box-sizing: border-box;
    width: 100%;
}

.form-group select {
    cursor: pointer;
}

#kode-pupuk.is-invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

#kode-pupuk.is-valid {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.peringatan-pupuk {
    min-height: 1.2em;
    margin: 0;
    font-size: 0.85rem;
    font-weight: 600;
}

.peringatan-pupuk.is-error {
    color: #ef4444;
}

.peringatan-pupuk.is-success {
    color: var(--success);
}

#btn-pupuk {
    margin-top: 4px;
    width: 100%;
    padding: 10px;
    background-color: #2e8b57;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.target-info {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 20px;
    border-radius: 16px;
    text-align: center;
    margin-top: 10px;
}

.target-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.target-info h3 {
    color: var(--success);
    font-size: 1.5rem;
}


/* Top Bar */
.top-bar {
  padding: 20px 40px;
  display: flex;
  justify-content: flex-end;
}

.connection-pill {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  padding: 8px 16px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
}

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

.status-dot.connected {
  background-color: var(--success);
  box-shadow: 0 0 10px var(--success);
}

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

/* Main Content */
.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  width: 100%;
}

.hero {
  text-align: center;
  margin-bottom: 60px;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #111827 0%, #4b5563 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  letter-spacing: 1px;
}

/* Grid Layout */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
  margin-bottom: 60px;
}

.stat-card {
  background: var(--card-bg);
  backdrop-filter: blur(15px);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-10px);
  border-color: #cbd5e1;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: inline-block;
}

.stat-card h3 {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 15px;
}

.value-container {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 5px;
  margin-bottom: 15px;
}

.value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-main);
}

.value.is-high {
  color: var(--success);
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.35);
}

.value.is-low {
  color: var(--danger);
  text-shadow: 0 0 10px rgba(239, 68, 68, 0.35);
}

.unit {
  color: var(--text-muted);
  font-size: 1.2rem;
}

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

.value-note {
  margin-bottom: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Table Section */
.device-status {
  margin-top: 40px;
}

.device-status h2 {
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.device-table-wrapper {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 20px;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

th {
  background: #4caf50;
  color: #ffffff;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.status-badge {
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-badge.active {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Footer */
footer {
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .main-content {
    padding: 10px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}