:root {
  --glass: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.45);
  --ink: #101010;
  --muted: #5b5b5b;
  --chip: rgba(255, 255, 255, 0.7);
  --chip-border: rgba(255, 255, 255, 0.65);
  --radius-xl: 24px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: "Epilogue", sans-serif;
  color: var(--ink);
  background-image: url("./images/grass.jpeg");
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  /* Use dynamic viewport on supported browsers to avoid URL bar jump */
  padding: clamp(16px, 4vw, 120px) clamp(16px, 4vw, 24px);
  min-height: 100dvh;
  /* allow scrolling everywhere */
  overflow: auto;
}

/* --- Main Container --- */
.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  max-width: 1200px;
  width: 100%;
  /* let content define height */
  height: auto;
}

/* Panels should grow with content and be scrollable if needed */
.panel {
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  padding: 40px 50px 50px;
  text-align: center;
  display: flex;
  flex-direction: column;
  /* remove fixed height and hidden overflow */
  height: auto;
  overflow: visible;
}

/* --- Heading --- */
.panel h1 {
  font-family: "Instrument Serif", serif;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.1;
  letter-spacing: 1px;
  margin-bottom: 28px;
}

/* --- Search Bar --- */
#searchForm {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  position: relative;
  margin-bottom: 28px;
}

#searchInput {
  flex: 1;
  font-family: "Epilogue", sans-serif;
  font-size: 16px;
  padding: 16px 56px 16px 18px; /* space for the icon */
  border-radius: 999px;
  border: 1px solid #e7e7e7;
  outline: none;
  background: #fff;
  width: 100%;
}

/* make sure input has enough right padding when buttons change size */
@media (max-width: 420px) {
  #searchInput { padding-right: 60px; }
}

#searchForm button {
  position: absolute;
  right: 2px;
  height: 48px;
  width: 48px;
  border-radius: 999px;
  border: 1px solid #d8d8d8;
  background: #fff;
  cursor: pointer;
  font-size: 18px;
  display: grid;
  place-items: center;
}

#clearBtn { left: auto; right: 2px; }
#searchBtn { left: auto; right: 2px; }

.hidden { display: none !important; }

.modal { position: fixed; inset: 0; display: grid; place-items: center; z-index: 1000; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.35); backdrop-filter: blur(2px); }
.modal-card { position: relative; background: #fff; border-radius: 16px; width: min(860px, 92vw); max-height: 80vh; overflow: auto; box-shadow: 0 20px 50px rgba(0,0,0,0.2); border: 1px solid var(--glass-border); padding-top: 8px; }
.modal-close { position: absolute; top: 8px; right: 8px; width: 36px; height: 36px; border-radius: 999px; border: 1px solid #ddd; background: #fff; cursor: pointer; z-index: 1; }
.modal .chart { width: 100%; height: 320px; }
.modal .pad { padding: 18px 20px; }

/* Results should be allowed to grow and scroll within the page */
#results {
  margin-top: 20px;
  display: grid;
  gap: 16px;
  flex: 1 1 auto;
  min-height: 0;
}

/* --- Popular --- */
.popular { text-align: left; margin-bottom: 12px; }
.popular-hd { font-weight: 700; color: var(--muted); margin: 8px 0 6px; }
.popular-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 8px;
}
.popular-list li {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  align-items: center;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--glass-border);
  border-radius: 10px; padding: 10px 12px;
}
.popular-list .ticker { font-weight: 800; }
.popular-list .name { color: var(--muted); font-size: 14px; }
.popular-list button {
  justify-self: end; padding: 6px 10px;
  border-radius: 8px; border: 1px solid #d8d8d8;
  background: #fff; cursor: pointer;
}

.loading, .error {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
}

.loading { color: var(--muted); font-style: italic; }

.error {
  color: #9a0415;
  background: rgba(154, 4, 21, 0.1);
  border-color: rgba(154, 4, 21, 0.2);
}

.card {
  text-align: left;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
}

.card-hd {
  display: grid;
  grid-template-columns: 1fr auto 40px;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.card .logo {
  width: 40px; height: 40px;
  border-radius: 8px; object-fit: cover;
  grid-column: 3;
}

.card .name {
  font-weight: 700; font-size: 18px;
}

.card .sym {
  font-weight: 400; color: var(--muted); margin-left: 6px;
}

.price { font-size: 24px; font-weight: 800; margin-top: 6px; }

.chg.up { color: #066d3b; }
.chg.down { color: #9a0415; }

.metric {
  display: flex; justify-content: space-between;
  margin-top: 6px; font-size: 14px; color: var(--muted);
}

details.learn {
  margin-top: 12px;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 10px 14px;
}

details.learn summary { cursor: pointer; font-weight: 700; font-size: 15px; }

details.learn ul {
  padding-left: 18px; text-align: left; color: var(--muted);
  margin: 8px 0 0; font-size: 14px;
}

/* --- Cheat sheet --- */
.cheatsheet { align-self: stretch; height: auto; }
.cheatsheet .cs-card {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl); padding: 16px 18px; margin-bottom: 10px;
  backdrop-filter: blur(10px);
}
.cheatsheet .cs-title { font-weight: 800; }
.cheatsheet .cs-item {
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--glass-border);
  border-radius: 12px; padding: 12px 14px; margin-bottom: 10px;
}
.cheatsheet .cs-item-hd { font-weight: 700; margin-bottom: 4px; }
.cheatsheet .cs-item-sub { color: var(--muted); font-size: 14px; }

/* --------- Responsive --------- */

/* Tablet down: give more room to main panel, shrink side column */
@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 2fr 1fr;
    gap: 20px;
  }
}

/* Phablet down: single column, natural document flow, scrollable page */
@media (max-width: 780px) {
  body {
    align-items: stretch;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .panel {
    padding: 28px 22px;
  }

  /* Cards a little tighter */
  .card { padding: 16px; }
  .price { font-size: 22px; }
}

/* Small phones */
@media (max-width: 600px) {
  /* previous mobile block, but stronger fixes for heights */
  .layout { grid-template-columns: 1fr; }
  .panel { padding: 24px 18px; }

  #results { /* allow normal page scroll instead of nested scrolls */
    max-height: none;
  }

  /* Popular rows simplify */
  .popular-list li {
    grid-template-columns: 64px 1fr auto;
    padding: 10px 10px;
  }

  /* Card header in two rows on tiny screens */
  .card-hd {
    grid-template-columns: 1fr 40px;
    grid-template-areas:
      "title logo"
      "price logo";
    align-items: center;
  }
  .card .logo { grid-area: logo; }
  .card .name { grid-area: title; }
  .price { grid-area: price; margin-top: 4px; }
}

/* Ultra small devices */
@media (max-width: 360px) {
  .panel h1 { font-size: 28px; }
  #searchForm button { height: 42px; width: 42px; }
  #searchInput { padding: 14px 54px 14px 16px; }
}

/* Motion safety */
@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
}