@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap');

:root {
  /* Colors */
  --surface-canvas: #f8fafc;
  --surface-card: #ffffff;
  --surface-hover: #f1f5f9;
  
  --color-primary: #182c63;
  --color-primary-hover: #0f1d42;
  
  --color-secondary: #8dca2a;
  
  --color-emergency: #ea580c;
  
  --text-main: #0b1c30;
  --text-muted: #64748b;
  --text-on-primary: #ffffff;
  --text-on-secondary: #0f1d42;
  
  --border-default: #e2e8f0;
  --border-input: #cbd5e1;
  --border-input-hover: #94a3b8;
  
  /* Status Colors */
  --bg-operational: #f4fbe8;
  --border-operational: #c2ea7c;
  --text-operational: #4d7311;
  --dot-operational: #8dca2a;
  
  --bg-idle: #f1f5f9;
  --border-idle: #e2e8f0;
  --text-idle: #475569;
  
  --bg-emergency: #fff7ed;
  --border-emergency: #fed7aa;
  --text-emergency: #c2410c;

  /* Typography */
  --font-main: 'Plus Jakarta Sans', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem; /* 4px */
  --space-sm: 0.5rem;  /* 8px */
  --space-md: 1rem;    /* 16px */
  --space-lg: 1.5rem;  /* 24px */
  --space-xl: 2.5rem;  /* 40px */
  --gutter: 1.5rem;
  --gutter-mobile: 0.75rem;
  --margin-desktop: 2rem;
  --margin-mobile: 1rem;
  
  /* Radii */
  --radius-core: 0.25rem;
  --radius-intermediate: 0.5rem;
  --radius-large: 0.75rem;
  --radius-pill: 9999px;
  
  /* Shadows */
  --shadow-level-1: 0px 1px 3px rgba(24, 44, 99, 0.04), 0px 4px 12px rgba(24, 44, 99, 0.03);
  --shadow-level-2: 0px 8px 24px rgba(24, 44, 99, 0.08), 0px 2px 6px rgba(24, 44, 99, 0.04);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--surface-canvas);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography Classes */
.display-lg { font-size: 48px; font-weight: 800; line-height: 56px; letter-spacing: -0.02em; }
.headline-lg { font-size: 32px; font-weight: 700; line-height: 40px; letter-spacing: -0.015em; }
.headline-md { font-size: 24px; font-weight: 600; line-height: 32px; letter-spacing: -0.01em; }
.headline-sm { font-size: 20px; font-weight: 600; line-height: 28px; }

.title-md { font-size: 16px; font-weight: 600; line-height: 24px; }
.body-lg { font-size: 16px; font-weight: 400; line-height: 26px; }
.body-md { font-size: 14px; font-weight: 400; line-height: 22px; }
.body-sm { font-size: 12px; font-weight: 400; line-height: 18px; }

.label-md { font-size: 13px; font-weight: 600; line-height: 16px; letter-spacing: 0.01em; }
.label-sm { font-size: 11px; font-weight: 700; line-height: 14px; letter-spacing: 0.05em; text-transform: uppercase; }

.tabular-nums { font-variant-numeric: tabular-nums; }

h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
}

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

/* Layout */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--margin-desktop);
}

.grid {
  display: grid;
  gap: var(--gutter);
}

.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-8 { grid-template-columns: repeat(8, 1fr); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

/* Components: Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-md);
  height: 40px;
  border-radius: var(--radius-core);
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  outline: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-on-primary);
}
.btn-primary:hover { 
  background-color: var(--color-primary-hover);
  box-shadow: 0 0 10px rgba(24, 44, 99, 0.2); 
}
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--text-on-secondary);
}
.btn-secondary:hover { opacity: 0.9; }

.btn-emergency {
  background-color: var(--color-emergency);
  color: var(--text-on-primary);
  animation: pulse-orange 2s infinite;
}

@keyframes pulse-orange {
  0% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(234, 88, 12, 0); }
  100% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0); }
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--border-input);
}
.btn-outline:hover { background-color: var(--surface-hover); }

/* Cards & Panels */
.card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-intermediate);
  padding: var(--space-md);
  box-shadow: var(--shadow-level-1);
}

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

/* Asset Telemetry Metric Cards */
.telemetry-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.telemetry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.telemetry-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.telemetry-indicator.operational { background-color: var(--dot-operational); }
.telemetry-indicator.emergency { background-color: var(--color-emergency); }

.telemetry-value {
  color: var(--color-primary);
}
.telemetry-trend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 600;
}
.trend-up { color: var(--color-secondary); }
.trend-down { color: var(--color-emergency); }

/* Chips & Status Indicators */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  height: 24px;
  padding: 0 var(--space-sm);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.chip-operational { background-color: var(--bg-operational); color: var(--text-operational); border: 1px solid var(--border-operational); }
.chip-operational .chip-dot { background-color: var(--dot-operational); animation: pulse-green 2s infinite; }

.chip-idle { background-color: var(--bg-idle); color: var(--text-idle); border: 1px solid var(--border-idle); }
.chip-idle .chip-dot { background-color: var(--text-muted); }

.chip-emergency { background-color: var(--bg-emergency); color: var(--text-emergency); border: 1px solid var(--border-emergency); }
.chip-emergency .chip-dot { background-color: var(--color-emergency); }

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(141, 202, 42, 0.7); }
  70% { box-shadow: 0 0 0 4px rgba(141, 202, 42, 0); }
  100% { box-shadow: 0 0 0 0 rgba(141, 202, 42, 0); }
}

/* Forms */
.form-input {
  height: 40px;
  background-color: var(--surface-card);
  border: 1px solid var(--border-input);
  color: var(--text-main);
  font-size: 14px;
  border-radius: var(--radius-core);
  padding: 0 var(--space-sm);
  width: 100%;
  transition: all 0.2s ease;
}
.form-input:hover { border-color: var(--border-input-hover); }
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(24, 44, 99, 0.12);
  outline: none;
}

/* Checkboxes */
.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}
.checkbox-input {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-input-hover);
  border-radius: 2px;
  background-color: var(--surface-card);
  position: relative;
  cursor: pointer;
}
.checkbox-input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox-input:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.checkbox-input:focus-visible {
  box-shadow: 0 0 0 2px rgba(24, 44, 99, 0.3);
}

/* Navbar */
.navbar {
  background-color: var(--color-primary);
  padding: var(--space-md) var(--margin-desktop);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-on-primary);
}
.navbar .logo {
  font-family: var(--font-main);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* Responsive */
@media (max-width: 1199px) {
  .grid-cols-12 { grid-template-columns: repeat(8, 1fr); }
  .container { padding: 0 1.5rem; }
}
@media (max-width: 767px) {
  .grid-cols-12, .grid-cols-8, .grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .display-lg { font-size: 36px; line-height: 44px; }
  .headline-lg { font-size: 26px; line-height: 34px; }
  .container { padding: 0 var(--margin-mobile); }
}