/* ---------------------------------------------
       Theme, variables and basic reset
       ---------------------------------------------*/
:root {
  --bg: #0f1724;
  --card: rgba(255, 255, 255, 0.04);
  --muted: rgba(255, 255, 255, 0.65);
  --accent: #e04f5f;
  /* blood-ish */
  --accent-2: #2bd4c6;
  /* teal for diagnostics */
  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --max-width: 1100px;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: "Nunito", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial;
  background: radial-gradient(
      1200px 600px at 10% 10%,
      rgba(224, 79, 95, 0.06),
      transparent
    ),
    linear-gradient(180deg, #07101a 0%, var(--bg) 60%);
  color: #e6edf3;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.45;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.container {
  width: min(95%, var(--max-width));
  margin: 0 auto;
}

header {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo .mark {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #ff7a8a);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-family: "Playfair Display";
  font-size: 20px;
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
}

/* Hero */
.hero {
  background-image: url("background.jpeg");
  background-size: cover;
  /* Scales image to cover container */
  background-position: center;
  /* Centers the image */
  background-repeat: no-repeat;
  /* No tiling */

  width: 100%;
  /* Prevent horizontal overflow */
  height: 100vh;
  /* Full viewport height */

  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 28px;
  align-items: center;

  border-radius: 20px;
  /* Rounded corners */
  overflow: hidden;
  /* Ensures background respects border-radius */
  box-sizing: border-box;
  /* Prevents extra width from padding/border */
  margin: 0;
  /* Remove default margin */
}

.hero-card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.03),
    rgba(255, 255, 255, 0.02)
  );
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

h1 {
  font-family: "Playfair Display";
  font-size: 42px;
  margin: 0 0 6px 0;
  letter-spacing: -0.5px;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 18px;
}

/* ECG line / animated waveform */
.ecg-wrap {
  position: relative;
  padding: 18px 0;
}

.ecg {
  width: 100%;
  height: 78px;
  border-radius: 8px;
  display: block;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.03);

  /* 1. ECG Mesh Grid Background */
  background-color: #111;
  /* Dark background color */
  background-image:
                /* Vertical lines (gray) */ linear-gradient(
      to right,
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px
    ),
    /* Horizontal lines (gray) */
      linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);

  /* 2. Grid Spacing: 15px boxes */
  background-size: 15px 15px;
}

.ecg svg {
  /* KEY FOR RESPONSIVENESS: */
  /* Ensure the SVG itself fills its container */
  width: 100%;
  height: 100%;
  display: block;

  /* Ensure the waveform color remains visible */
  z-index: 2;
  position: relative;
}

/* Optional: Subtle glow effect behind the ECG line */
.ecg svg path {
  filter: drop-shadow(0 0 3px var(--accent-2));
}

/* small stat blocks */
.stats {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.stat {
  background: var(--glass);
  padding: 10px 12px;
  border-radius: 10px;
  text-align: center;
  flex: 1;
}

.stat .n {
  font-weight: 800;
  font-size: 18px;
}

.stat .l {
  font-size: 12px;
  color: var(--muted);
}

/* Characters grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  background: var(--card);
  padding-bottom: 16px;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.meta {
  padding-top: 12px;
}

.meta h3 {
  margin: 0;
  font-size: 18px;
  align-items: center;
}

.meta p {
  margin: 6px 0 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 6, 10, 0.6);
  display: none;
  place-items: center;
  padding: 20px;
}

.modal.open {
  display: grid;
}

.modal .panel {
  width: min(820px, 95%);
  background: linear-gradient(180deg, #07131a, #0e1b25);
  padding: 22px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.close {
  position: absolute;
  right: 14px;
  top: 10px;
  background: none;
  border: 0;
  color: var(--muted);
  font-weight: 800;
}

/* Episodes / search */
.searchbar {
  display: flex;
  gap: 10px;
}

.searchbar input {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  background: transparent;
  color: inherit;
}

.episodes {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.episode {
  padding: 12px;
  border-radius: 8px;
  background: var(--glass);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.episode small {
  color: var(--muted);
}

/* mini interactive diagnostic */
.diagnostic {
  margin-top: 18px;
  padding: 16px;
  border-radius: 12px;
  background: linear-gradient(
    90deg,
    rgba(43, 212, 198, 0.04),
    rgba(224, 79, 95, 0.02)
  );
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent), #ff8a93);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  border: 0;
  cursor: pointer;
}

footer {
  padding: 28px 0 80px 0;
  color: var(--muted);
}

/* responsiveness */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 32px;
  }
}

/* small animation touches */
.float {
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }

  100% {
    transform: translateY(0);
  }
}

/* subtle pulse for accent */
.ping {
  position: relative;
}

.ping::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(224, 79, 95, 0.25);
  animation: ping 2.2s infinite;
}

@keyframes ping {
  0% {
    box-shadow: 0 0 0 0 rgba(224, 79, 95, 0.12);
  }

  70% {
    box-shadow: 0 0 0 14px rgba(224, 79, 95, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(224, 79, 95, 0);
  }
}

/* accessibility focus */
:focus {
  outline: 3px solid rgba(43, 212, 198, 0.12);
  outline-offset: 2px;
}

.character-card {
  display: flex;
  flex-direction: column;
  align-items: center !important;
  /* Centers image + text horizontally */
  justify-content: center;
  text-align: center;
  /* Centers text under the image */
  /* background: rgba(255, 255, 255, 0.05);  Subtle translucent background */
  backdrop-filter: blur(8px);
  /* Soft glass effect */
  border-radius: 20px;
  padding-top: 16px;
  padding-right: 0;
  /* padding-left: 16px; */

  /* padding-left: 20px; */
  /* padding-right: 20px; */
  width: auto;
  /* Consistent card size */
  /* margin: 20px; */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  /* box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); */
}

/* Hover lift for a premium look */
.character-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 174, 255, 0.3);
}

/* Character image (paste the earlier code here) */
.character-img {
  width: 200px;
  height: 260px;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.4);
  border-radius: 15px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: block;
  margin-bottom: 15px;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.character-img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3),
    0 0 20px rgba(0, 174, 255, 0.4);
  border-color: rgba(0, 174, 255, 0.6);
}

/* Character name */
.character-name {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
  text-align: center;
}

/* Muted text under the name (e.g. role or actor) */
.character-role {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.65);
  font-style: italic;
  text-align: center;
}

.diagnostic-game {
  padding: 50px 20px;
  background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
  color: #fff;
  text-align: center;
}

.diagnostic-game h2 {
  font-size: 2.2rem;
  margin-bottom: 30px;
  letter-spacing: 1px;
}

#game-container {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.05);
  padding: 30px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 25px rgba(0, 174, 255, 0.3);
}

.patient-info h3 {
  margin-bottom: 10px;
  font-size: 1.5rem;
  color: #00aeff;
}

.patient-info p {
  font-style: italic;
  margin-bottom: 10px;
}

.patient-info ul {
  list-style: none;
  padding: 0;
  margin-bottom: 15px;
}

.options-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
}

.option-btn {
  background: rgba(0, 174, 255, 0.2);
  border: 2px solid #00aeff;
  color: #fff;
  padding: 12px 18px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}

.option-btn:hover {
  transform: scale(1.05);
  background: rgba(0, 174, 255, 0.35);
  box-shadow: 0 6px 20px rgba(0, 174, 255, 0.4);
}

.feedback {
  font-size: 1rem;
  margin-bottom: 15px;
  min-height: 24px;
}

.scoreboard {
  margin-bottom: 15px;
  font-size: 1.2rem;
  font-weight: 600;
}

.next-btn {
  display: none;
  padding: 12px 25px;
  border-radius: 15px;
  border: none;
  background: #00aeff;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.next-btn:hover {
  background: #008acc;
}

.ecg-container {
  margin-top: 40px;
  height: 50px;
  overflow: hidden;
}

.ecg-line {
  width: 200%;
  height: 2px;
  background: #00aeff;
  animation: ecg 1s linear infinite;
}

@keyframes ecg {
  0% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-25%);
  }

  50% {
    transform: translateX(-50%);
  }

  75% {
    transform: translateX(-75%);
  }

  100% {
    transform: translateX(-100%);
  }
}

#ecgCanvas {
  /* 1. Responsiveness */
  display: block;
  margin: 20px auto;
  border-radius: 5px;

  /* KEY: Force it to fill its container */
  width: 100%;
  /* The height will be controlled by its HTML attribute, but we can cap the max height if needed */
  max-width: 600px;
  /* Limits the max size on huge screens if needed */
  height: 100px;
  /* Fixed height for the canvas container */

  /* 2. Mesh Grid Background (Same successful technique as before) */
  background-color: #111;
  background-image:
                /* Vertical lines */ linear-gradient(
      to right,
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px
    ),
    /* Horizontal lines */
      linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 15px 15px;
}

/* --- New CSS for Hamburger Menu (Add this to your <style> block) --- */

.nav-toggle {
  display: none;
  /* Hidden by default on large screens */
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 20;
  /* Ensure button is on top of other elements */
}

.nav-toggle .bar {
  width: 100%;
  height: 3px;
  background: var(--color-off-white, #e6edf3);
  border-radius: 1px;
  transition: all 0.3s ease-in-out;
  transform-origin: 1px;
}

/* ----------------------------------
   Responsive Navigation Logic
   ---------------------------------- */
@media (max-width: 768px) {
  /* Show Hamburger button */
  .nav-toggle {
    display: flex;
  }

  /* Full navigation menu */
  nav {
    /* Start off-screen */
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 10;

    /* Menu appearance */
    width: min(70vw, 300px);
    background: var(--bg, #0f1724);
    padding-top: 80px;
    flex-direction: column;
    gap: 20px;
    box-shadow: -4px 0 10px rgba(0, 0, 0, 0.4);

    /* Transition for sliding effect */
    transform: translateX(100%);
    transition: transform 0.3s ease-out;
  }

  /* State when menu is open */
  nav[data-visible="true"] {
    transform: translateX(0);
  }

  /* Center links in mobile menu */
  nav a {
    padding: 10px 20px;
    width: 100%;
    text-align: center;
  }

  /* Hamburger animation (X icon) */
  .nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
    transform: rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
    opacity: 0;
    /* Middle bar disappears */
  }

  .nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
    transform: rotate(-45deg);
  }
}

/* Ensure header space is respected */
@media (max-width: 768px) {
  header {
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 30;
    /* Keep it on top of the menu */
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
}

/* .avatar{
      width:100%;height:140px;border-radius:10px;background:linear-gradient(180deg, rgba(0,0,0,0.2), rgba(0,0,0,0.3));display:grid;place-items:center;font-size:36px;font-weight:900;font-family:'Playfair Display';
    } */