/* ROOT PALETTE & VARIABLES */
:root {
  --bg-primary: #030712;
  --bg-secondary: rgba(17, 24, 39, 0.6);
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --text-main: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  --font-heading: 'Orbitron', 'Outfit', sans-serif;
  --font-body: 'Outfit', 'Space Grotesk', sans-serif;
  --warning-red: #ef4444;
}

/* RESET & CORE STYLES */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* DYNAMIC BACKGROUND SYSTEMS */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(6, 182, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center;
  z-index: 0;
  pointer-events: none;
}

.bg-glow-sphere {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

.sphere-1 {
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
  top: -10%;
  right: -5%;
  animation: floatSphere1 22s infinite alternate ease-in-out;
}

.sphere-2 {
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 75%);
  bottom: -15%;
  left: -10%;
  animation: floatSphere2 26s infinite alternate ease-in-out;
}

@keyframes floatSphere1 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-80px, 60px) scale(1.15); }
}

@keyframes floatSphere2 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(90px, -70px) scale(1.1); }
}

/* PORTAL WRAPPER & HEADER */
.portal-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(10, 15, 30, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  margin-bottom: 40px;
}

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

.logo-icon {
  font-size: 1.4rem;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 8px var(--accent-cyan));
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.system-time {
  font-size: 0.85rem;
  font-family: 'Space Grotesk', sans-serif;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

/* HERO SCENE */
.hero-section {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  font-family: var(--font-heading);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulseGlow 1.8s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(6, 182, 212, 0.15));
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

/* PORTAL CARD GRID */
.portal-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 56px;
}

/* BASE CARD & GLASSMORPHISM */
.card {
  background: var(--bg-secondary);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 10px 30px var(--glass-shadow);
  text-decoration: none;
  color: inherit;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(6, 182, 212, 0.1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  z-index: 2;
}

.card-category {
  font-size: 0.7rem;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-category i {
  color: var(--accent-cyan);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.status-pill.online {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-pill.online .pulse-dot {
  background-color: #10b981;
  box-shadow: 0 0 6px #10b981;
}

.status-pill.warning {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.status-pill.warning .pulse-dot {
  background-color: #f59e0b;
  box-shadow: 0 0 6px #f59e0b;
}

.status-pill.offline {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.status-pill.offline .pulse-dot {
  background-color: #ef4444;
  box-shadow: 0 0 6px #ef4444;
}

.card-content {
  z-index: 2;
  flex-grow: 1;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(90deg, #fff, #d1d5db);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
  font-weight: 300;
}

/* SCADA FEATURED CARD DETAILS & WARNING STATE */
.scada-featured {
  grid-row: span 2;
  border: 1px solid rgba(6, 182, 212, 0.15);
}

/* Telemetry warning flash animation when sensor distance < 15cm */
.warning-state {
  border-color: rgba(239, 68, 68, 0.4) !important;
  box-shadow: 0 20px 40px rgba(239, 68, 68, 0.15), 0 0 30px rgba(239, 68, 68, 0.1) !important;
}

.warning-state .live-widget {
  background: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.2);
}

.warning-state #live-distance {
  color: var(--warning-red);
  text-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

.warning-state #live-status-pill {
  background: rgba(239, 68, 68, 0.1);
  color: var(--warning-red);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.warning-state #live-status-pill .pulse-dot {
  background-color: var(--warning-red);
  box-shadow: 0 0 8px var(--warning-red);
}

/* INTERACTIVE TELEMETRY WIDGET */
.live-widget {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 24px;
  transition: all 0.3s ease;
}

.widget-label {
  font-size: 0.65rem;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.widget-metrics {
  display: flex;
  gap: 24px;
  margin-bottom: 16px;
}

.metric {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 700;
  color: #fff;
  transition: color 0.3s ease;
}

.cyan-text {
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(6, 182, 212, 0.3);
}

.border-left {
  border-left: 1px solid var(--glass-border);
  padding-left: 24px;
}

.widget-footer {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  transition: transform 0.3s ease;
}

.card:hover .widget-footer {
  transform: translateX(4px);
}

/* STACK TAGS & BUTTONS */
.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.3s ease;
}

.tag i {
  color: var(--accent-cyan);
}

.tag:hover {
  background: rgba(6, 182, 212, 0.05);
  border-color: rgba(6, 182, 212, 0.2);
  color: var(--text-main);
  transform: translateY(-2px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #fff;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.w-100 {
  width: 100%;
}

/* PORTAL FOOTER */
.footer {
  text-align: center;
  padding: 32px 0 16px 0;
  border-top: 1px solid var(--glass-border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* RESPONSIVE DESIGNS */
@media (max-width: 900px) {
  .portal-grid {
    grid-template-columns: 1fr;
  }
  .scada-featured {
    grid-row: span 1;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 0.95rem;
  }
  .card {
    padding: 24px;
  }
  .widget-metrics {
    flex-direction: column;
    gap: 16px;
  }
  .border-left {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--glass-border);
    padding-top: 16px;
  }
}