/* SwiftRover - Glassy Futuristic Blue Gradient UI */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&family=Space+Grotesk:wght@300;400;500;600;700&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Blue Gradient Palette */
  --primary-blue: #0a7dd9;
  --secondary-blue: #1e88e5;
  --accent-blue: #42a5f5;
  --light-blue: #64b5f6;
  --dark-blue: #1565c0;
  --darker-blue: #0d47a1;

  /* Glassy Effects */
  --glass-bg: rgba(15, 40, 75, 0.7);
  --glass-border: rgba(66, 165, 245, 0.2);
  --glass-hover: rgba(66, 165, 245, 0.15);

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #b3d9ff;
  --text-muted: #7fa8d1;

  /* Status Colors */
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;

  /* Dark Background */
  --bg-primary: #030b1a;
  --bg-secondary: #0f1f35;
  --bg-tertiary: #1a2a45;
}

html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
}

body {
  font-family: "Inter", sans-serif;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Animated gradient background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(10, 125, 217, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(30, 136, 229, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* Subtle grid overlay */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(66, 165, 245, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(66, 165, 245, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

/* ===== NAVIGATION ===== */
.navbar {
  background: linear-gradient(180deg, rgba(3, 11, 26, 0.95) 0%, rgba(15, 31, 53, 0.9) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 8px 32px rgba(10, 125, 217, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-logo h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--light-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-logo img {
  height: 45px;
  width: 45px;
  filter: drop-shadow(0 0 8px rgba(66, 165, 245, 0.3));
}

.nav-menu {
  display: flex;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.8rem;
}

.nav-link::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--light-blue));
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(66, 165, 245, 0.1);
  box-shadow: 0 0 15px rgba(66, 165, 245, 0.2);
}

.nav-link:hover::before {
  width: 100%;
}

/* ===== MAIN CONTENT ===== */
.main-content {
  min-height: calc(100vh - 200px);
  padding: 3rem 2rem 2rem;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== PAGE TITLE ===== */
.page-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--light-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===== CARDS ===== */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
  box-shadow: 0 8px 32px rgba(10, 125, 217, 0.1);
  position: relative;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  border-color: var(--accent-blue);
  box-shadow: 0 12px 48px rgba(10, 125, 217, 0.2);
  transform: translateY(-4px);
  background: rgba(30, 136, 229, 0.08);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(10, 125, 217, 0.05);
}

.card-header h2,
.card-header h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.card-body {
  padding: 2rem;
}

/* ===== DASHBOARD GRID ===== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

/* ===== SENSOR VALUES ===== */
.sensor-value {
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin: 1rem 0;
  text-shadow: 0 0 20px rgba(66, 165, 245, 0.4);
}

.sensor-unit {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.sensor-update {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1rem;
  font-style: italic;
}

/* ===== BUTTONS ===== */
.btn {
  padding: 0.9rem 1.8rem;
  border: none;
  border-radius: 10px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: inline-block;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: var(--text-primary);
  border: 1px solid var(--accent-blue);
  box-shadow: 0 4px 15px rgba(10, 125, 217, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--accent-blue) 100%);
  box-shadow: 0 8px 25px rgba(10, 125, 217, 0.5);
  transform: translateY(-2px);
}

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

/* Success Button */
.btn-success {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: var(--text-primary);
  border: 1px solid #10b981;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
  transform: translateY(-2px);
}

/* Danger Button */
.btn-danger {
  background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  color: var(--text-primary);
  border: 1px solid #ef4444;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
  box-shadow: 0 8px 25px rgba(239, 68, 68, 0.5);
  transform: translateY(-2px);
}

/* Stop Button */
.btn-stop {
  background: linear-gradient(135deg, var(--darker-blue) 0%, var(--dark-blue) 100%);
  color: var(--text-primary);
  border: 1px solid var(--dark-blue);
}

.btn-stop:hover {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  box-shadow: 0 8px 25px rgba(10, 125, 217, 0.5);
  transform: translateY(-2px);
}

/* Control Buttons */
.btn-control {
  width: 100%;
  padding: 1.2rem;
  font-size: 1.1rem;
  margin: 0.5rem;
  border-radius: 12px;
}

/* ===== MOTOR CONTROL GRID ===== */
.motor-control {
  background: rgba(10, 125, 217, 0.05);
  border-radius: 12px;
  padding: 2rem;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto;
}

.btn-up, .btn-down, .btn-left, .btn-right {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  border: 1px solid var(--accent-blue);
}

/* ===== DEVICE CONTROLS ===== */
.device-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.device-item {
  background: rgba(10, 125, 217, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}

.device-item h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.device-item .btn {
  width: 100%;
  margin: 0.5rem 0;
}

/* ===== CONTROL SECTION ===== */
.control-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

/* ===== STATUS MESSAGE ===== */
.status-message {
  padding: 1.2rem;
  margin-top: 2rem;
  border-radius: 10px;
  background: rgba(66, 165, 245, 0.1);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  text-align: center;
  font-weight: 500;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: #10b981;
  color: #34d399;
}

.status-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #f87171;
}

/* ===== SENSOR DATA SECTION ===== */
.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.chart-container {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(10, 125, 217, 0.1);
  transition: all 0.4s ease;
}

.chart-container:hover {
  border-color: var(--accent-blue);
  box-shadow: 0 12px 48px rgba(10, 125, 217, 0.2);
}

.chart-container h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

canvas {
  max-height: 300px;
}

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(180deg, rgba(3, 11, 26, 0.9) 0%, rgba(15, 31, 53, 0.95) 100%);
  border-top: 1px solid var(--glass-border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-top: 4rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .page-title {
    font-size: 1.8rem;
  }

  .nav-menu {
    flex-direction: column;
    gap: 0.3rem;
  }

  .nav-link {
    padding: 0.6rem 1rem;
    font-size: 0.75rem;
  }

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

  .control-section {
    grid-template-columns: 1fr;
  }

  .control-grid {
    max-width: 300px;
  }

  .btn-control {
    padding: 1rem;
    font-size: 0.9rem;
  }

  .sensor-value {
    font-size: 2rem;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: slideIn 0.5s ease-out;
}

/* Notification Styles */
.notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 2rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-weight: 600;
  z-index: 2000;
  animation: slideIn 0.3s ease-out;
  box-shadow: 0 8px 32px rgba(10, 125, 217, 0.2);
}

.notification.success {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  color: #34d399;
}

.notification.error {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
  margin: 0 4px;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}