/* ===== FONTS & VARIABLES ===== */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  /* Colors */
  --primary-red: #cc1100;
  --secondary-red: #ff1a1a;
  --dark-red: #990000;
  --warning-yellow: #ffd700;
  --button-primary: #ffffff;
  --text-on-button: #cc1100;
  --bg-dark: #000000;
  --bg-light: #111111;

  /* Gradients */
  --primary-gradient: linear-gradient(
    135deg,
    var(--dark-red),
    var(--primary-red)
  );

  /* Spacing & Layout */
  --app-padding: max(16px, env(safe-area-inset-left));
  --border-radius: 16px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(204, 17, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(204, 17, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(204, 17, 0, 0.2);
}

/* ===== RESET & BASE STYLES ===== */
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

html {
  height: -webkit-fill-available;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: #fff;
  margin: 0;
  padding: var(--app-padding);
  min-height: 100vh;
  min-height: -webkit-fill-available;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: fixed;
  width: 100%;
  overscroll-behavior: none;
}

/* ===== BACKGROUND ANIMATION ELEMENTS ===== */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  background: var(--bg-dark);
  overflow: hidden;
}

.siren-light {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  animation: sirenFlash 1.5s infinite;
}

.siren-light:nth-child(1) {
  top: 20%;
  left: 15%;
  animation-delay: 0s;
}

.siren-light:nth-child(2) {
  top: 30%;
  right: 20%;
  animation-delay: 0.75s;
}

.emergency-cross {
  position: absolute;
  width: 80px;
  height: 80px;
  opacity: 0.2;
}

.emergency-cross::before,
.emergency-cross::after {
  content: "";
  position: absolute;
  background: #fff;
}

.emergency-cross::before {
  width: 20px;
  height: 80px;
  left: 30px;
}

.emergency-cross::after {
  width: 80px;
  height: 20px;
  top: 30px;
}

.emergency-cross:nth-child(3) {
  top: 70%;
  left: 30%;
  animation: rotateCross 20s linear infinite;
}

.emergency-cross:nth-child(4) {
  top: 20%;
  right: 25%;
  animation: rotateCross 20s linear infinite reverse;
}

.alert-ring {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  animation: alertPulse 3s infinite;
}

.alert-ring:nth-child(5) {
  width: 150px;
  height: 150px;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.alert-ring:nth-child(6) {
  width: 250px;
  height: 250px;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0.5s;
}

.alert-ring:nth-child(7) {
  width: 350px;
  height: 350px;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 1s;
}

.emergency-line {
  position: absolute;
  width: 100%;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 215, 0, 0.5),
    var(--warning-yellow),
    rgba(255, 215, 0, 0.5),
    transparent
  );
  animation: emergencyLine 3s infinite;
  opacity: 0.3;
}

.emergency-line:nth-child(8) {
  top: 25%;
  animation-delay: 0s;
}

.emergency-line:nth-child(9) {
  top: 75%;
  animation-delay: 1.5s;
}

/* ===== ANIMATIONS ===== */
@keyframes sirenFlash {
  0%,
  100% {
    background: var(--warning-yellow);
    box-shadow: 0 0 20px var(--warning-yellow),
      0 0 40px var(--warning-yellow);
    opacity: 1;
  }
  50% {
    background: var(--secondary-red);
    box-shadow: 0 0 20px var(--secondary-red),
      0 0 40px var(--secondary-red);
    opacity: 0.5;
  }
}

@keyframes rotateCross {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes alertPulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0;
  }
}

@keyframes emergencyLine {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes slideUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(255, 215, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0);
  }
}

/* ===== MAIN CONTAINER STYLES ===== */
.container {
  /*text-align: center;*/
  /*animation: slideUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);*/
  /*background: rgba(20, 20, 20, 0.8);*/
  /*backdrop-filter: blur(20px) saturate(180%);*/
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  padding: 24px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  /*width: 100%;*/
  max-width: 500px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--warning-yellow),
    var(--secondary-red)
  );
  animation: shimmer 2s infinite linear;
}

/* ===== TYPOGRAPHY ===== */
h1 {
  font-size: clamp(2em, 8vw, 2.5em);
  margin: 0 0 0.5em;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, var(--warning-yellow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

p {
  font-size: 1rem;
  margin: 0 0 1.5em;
  line-height: 1.6;
  opacity: 0.9;
  color: #ffffff;
  padding: 0 8px;
}

/* ===== BUTTONS & INTERACTIVE ELEMENTS ===== */
.role-selector {
  display: grid;
  gap: 16px;
  width: 100%;
  padding: 0 8px;
}

button {
  width: 100%;
  height: 56px;
  margin: 0;
  border: none;
  border-radius: 28px;
  background-color: var(--button-primary);
  color: var(--text-on-button);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

button::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.2)
  );
  opacity: 0;
  transition: opacity 0.3s;
}

button:active {
  transform: scale(0.96);
}

button:hover::before {
  opacity: 1;
}

#responder-btn {
  background-color: var(--warning-yellow);
  color: #000000;
  font-weight: 700;
  animation: pulse 2s infinite;
}

#responder-btn:hover {
  background-color: #ffd900;
}

/* ===== RESPONSIVE STYLES ===== */
@media (min-width: 480px) {
  .role-selector {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (hover: hover) {
  button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
}

button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.5);
}

/* ===== SAFE AREA INSETS (iOS) ===== */
@supports (padding: max(0px)) {
  body {
    padding-left: max(var(--app-padding), env(safe-area-inset-left));
    padding-right: max(var(--app-padding), env(safe-area-inset-right));
    padding-top: max(var(--app-padding), env(safe-area-inset-top));
    padding-bottom: max(var(--app-padding), env(safe-area-inset-bottom));
  }
}