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

:root, [data-theme="dark"] {
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #3730a3;
  --accent: #06b6d4;
  --success: #10b981;
  --error: #ef4444;
  --bg: #0f0e17;
  --card-bg: #1a1929;
  --card-border: rgba(255,255,255,0.07);
  --text: #f0eff7;
  --text-muted: #a09fc0;
  --radius: 20px;
}

[data-theme="light"] {
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #3730a3;
  --accent: #06b6d4;
  --success: #10b981;
  --error: #ef4444;
  --bg: #f4f3ff;
  --card-bg: #ffffff;
  --card-border: rgba(0,0,0,0.07);
  --text: #1e1b3a;
  --text-muted: #6b6a8a;
  --radius: 20px;
}

/* ── Body & Background ── */
html, body {
  height: 100%;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(79,70,229,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(6,182,212,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 40%, rgba(129,140,248,0.08) 0%, transparent 50%);
  z-index: 0;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,70,229,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,70,229,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
  pointer-events: none;
}

/* ── Map ── */
#map {
  height: 100%;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* ── Tombol Back ── */
.btn-back {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--card-bg);
  color: var(--text-muted);
  border: 1px solid var(--card-border);
  padding: 12px 20px;
  border-radius: 9999px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  z-index: 2000;
  transition: all 0.25s ease;
  backdrop-filter: blur(20px);
  text-decoration: none;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.btn-back:hover {
  background: rgba(79,70,229,0.15);
  border-color: rgba(79,70,229,0.4);
  color: var(--primary-light);
  transform: translateX(-3px);
}

/* ── Control Panel ── */
#controls {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1500;
  width: 360px;

  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 22px 24px;
  border-radius: var(--radius);
  box-shadow: 0 32px 64px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.04) inset;
  border: 1px solid var(--card-border);
  text-align: center;
  position: absolute;
}

#controls::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ── Header Panel ── */
.header-panel {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  margin-bottom: 18px;
}

.app-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 8px 24px rgba(79,70,229,0.4);
  flex-shrink: 0;
}

.header-panel h1 {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
  margin-bottom: 2px;
}

.header-panel p {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

#device-name {
  color: var(--primary-light);
  font-weight: 700;
  font-family: 'Plus Jakarta Sans', monospace;
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--card-border);
  margin-bottom: 18px;
}

/* ── Buttons ── */
.buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 16px;
}

button {
  flex: 1;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  color: white;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  letter-spacing: 0.1px;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

button:active {
  transform: translateY(0);
}

#start {
  background: linear-gradient(135deg, var(--success), #059669);
  box-shadow: 0 6px 20px rgba(16,185,129,0.3);
}

#start:hover {
  box-shadow: 0 10px 28px rgba(16,185,129,0.45);
}

#stop {
  background: linear-gradient(135deg, var(--error), #dc2626);
  box-shadow: 0 6px 20px rgba(239,68,68,0.3);
  display: none;
}

#stop:hover {
  box-shadow: 0 10px 28px rgba(239,68,68,0.45);
}

/* ── Status ── */
#status {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin: 4px 0 6px;
  min-height: 20px;
  line-height: 1.5;
}

#last-update {
  font-size: 12px;
  color: rgba(160,159,192,0.6);
  font-weight: 500;
}

/* ── Leaflet Overrides ── */
.leaflet-popup-content-wrapper {
  background: var(--card-bg) !important;
  color: var(--text) !important;
  border-radius: 16px !important;
  box-shadow: 0 32px 64px rgba(0,0,0,0.5) !important;
  border: 1px solid var(--card-border) !important;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif !important;
  font-size: 13px !important;
  line-height: 1.7 !important;
}

.leaflet-popup-content-wrapper b {
  color: var(--primary-light);
  font-weight: 700;
}

.leaflet-popup-tip {
  background: var(--card-bg) !important;
}

.leaflet-popup-close-button {
  color: var(--text-muted) !important;
  font-size: 18px !important;
  top: 10px !important;
  right: 12px !important;
}

.leaflet-popup-close-button:hover {
  color: var(--text) !important;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  #controls {
    width: calc(100vw - 40px);
    top: auto;
    bottom: 20px;
    transform: translateX(-50%);
  }
}