/* ==========================================================================
   Nerd Grid (Wireframe HUD) — shared design system
   Light = paper-white deep-blue wireframe HUD (the only theme; dark mode
   has been removed)
   See /Nerd Grid.md for the source design brief.
   ========================================================================== */

:root {
  /* toned page bg + solid white card surface, so wireframe panels actually
     separate from the page instead of dissolving into it (pure #fff-on-#fff
     wireframe reads as "barely there" once you remove the black backdrop) */
  --hud-bg: #e7ecf2;
  --hud-bg-raised: #ffffff;
  --hud-card-bg: #ffffff;

  --hud-border-1: rgba(0, 60, 130, 0.55);
  --hud-border-2: rgba(0, 60, 130, 0.32);
  --hud-border-3: rgba(0, 60, 130, 0.18);

  --hud-grid-h: rgba(0, 60, 130, 0.16);
  --hud-grid-v: rgba(0, 60, 130, 0.09);

  --hud-text-1: rgba(0, 35, 85, 1);
  --hud-text-2: rgba(0, 45, 100, 0.95);
  --hud-text-3: rgba(0, 50, 110, 0.75);
  --hud-text-4: rgba(0, 50, 110, 0.55);

  /* TW market convention: red = up, green = down (opposite of US/EU) */
  --hud-up: rgba(195, 30, 30, 1);
  --hud-up-dim: rgba(195, 30, 30, 0.6);
  --hud-down: rgba(0, 120, 100, 1);
  --hud-down-dim: rgba(0, 120, 100, 0.6);

  --hud-danger-border: rgba(195, 30, 30, 0.5);
  --hud-danger-text: rgba(170, 20, 20, 1);

  --hud-hover-bg: rgba(0, 60, 130, 0.07);
  --hud-active-bg: rgba(0, 60, 130, 0.14);

  --hud-radius: 2px;
  --hud-font: "JetBrains Mono", "Noto Sans TC", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--hud-border-1) transparent;
}

body {
  font-family: var(--hud-font);
  background-color: var(--hud-bg);
  color: var(--hud-text-2);
  margin: 0;
  line-height: 1.6;
  transition:
    background-color 0.15s ease,
    color 0.15s ease;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--hud-border-1);
}

/* -------------------------------------------------------------------- */
/* Header / nav                                                          */
/* -------------------------------------------------------------------- */

header {
  background-color: var(--hud-bg);
  border-bottom: 1px solid var(--hud-border-1);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

@media (min-width: 768px) {
  header {
    flex-direction: row;
    justify-content: space-between;
    padding: 0.85rem 2rem;
  }
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.header-left::-webkit-scrollbar {
  display: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .header-right {
    justify-content: flex-end;
  }
}

h1 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--hud-font);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--hud-text-2);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

@media (max-width: 480px) {
  h1 span.title-text {
    display: none;
  }
}

#header-logo {
  filter: grayscale(1) brightness(1.6);
  opacity: 0.85;
}

.nav-bar {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  text-decoration: none;
  color: var(--hud-text-3);
  font-family: var(--hud-font);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  padding: 0.4rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--hud-radius);
  transition:
    border-color 0.15s,
    color 0.15s,
    background 0.15s;
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--hud-hover-bg);
  color: var(--hud-text-1);
}

.nav-link.active {
  border-color: var(--hud-border-1);
  color: var(--hud-text-1);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-btn {
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  display: inline-flex;
  align-items: center;
  line-height: 1.5;
}

.nav-dropdown-btn::after {
  content: "";
  display: inline-block;
  border: solid currentColor;
  border-width: 0 1px 1px 0;
  padding: 2.5px;
  transform: rotate(45deg) translateY(-1px);
  margin-left: 5px;
  opacity: 0.7;
  transition: transform 0.2s;
}

.nav-dropdown:hover .nav-dropdown-btn::after {
  transform: rotate(-135deg) translateY(1px);
}

.nav-dropdown-menu {
  display: none;
  position: fixed;
  background: var(--hud-bg-raised);
  border: 1px solid var(--hud-border-1);
  border-radius: var(--hud-radius);
  min-width: 7rem;
  z-index: 9999;
  padding: 0.25rem;
  flex-direction: column;
  gap: 0.125rem;
}

.nav-dropdown-item {
  text-decoration: none;
  color: var(--hud-text-3);
  font-family: var(--hud-font);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.45rem 0.85rem;
  border-radius: var(--hud-radius);
  transition:
    background 0.15s,
    color 0.15s;
  white-space: nowrap;
}

.nav-dropdown-item:hover {
  background: var(--hud-hover-bg);
  color: var(--hud-text-1);
}

.nav-dropdown-item.active {
  background: var(--hud-active-bg);
  color: var(--hud-text-1);
}

.date-select {
  padding: 0.4rem 0.75rem;
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-border-1);
  background: transparent;
  color: var(--hud-text-2);
  font-family: var(--hud-font);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  outline: none;
}
.date-select option {
  background: var(--hud-bg-raised);
  color: var(--hud-text-2);
}
.date-select:focus {
  border-color: var(--hud-text-2);
}

/* -------------------------------------------------------------------- */
/* Layout                                                                 */
/* -------------------------------------------------------------------- */

.container {
  max-width: 1400px;
  margin: 1rem auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    margin: 1.5rem auto;
    padding: 0 1.5rem;
  }
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: 2.5fr 1fr;
  }
}

/* -------------------------------------------------------------------- */
/* Card / panel — wireframe only, no fill                                */
/* -------------------------------------------------------------------- */

.card {
  background: var(--hud-card-bg);
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-border-1);
  padding: 1.25rem;
}

.card-title {
  position: relative;
  font-size: 0.8rem;
  font-weight: 550;
  font-family: var(--hud-font);
  letter-spacing: 0.05em;
  margin: 0 0 1.2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  row-gap: 0.4rem;
  column-gap: 0.5rem;
  color: var(--hud-text-1);
  text-align: center;
  padding: 0.15rem 0 1.1rem;
  border-bottom: 1px solid var(--hud-border-3);
}

/* Decorative "//" mark, floated in the top-left corner independent of the
   centered title text — a small accent rather than an inline text prefix. */
.card-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 0.75rem;
  height: 0.8rem;
  background-image: linear-gradient(
    90deg,
    var(--hud-text-1) 0 28%,
    transparent 28% 46%,
    var(--hud-text-1) 46% 74%,
    transparent 74% 100%
  );
  transform: skewX(-18deg);
}

/* Small flared tab sitting on top of the bottom border, centered under the
   title text. */
.card-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -1px;
  transform: translateX(-50%);
  width: 2.3rem;
  height: 5px;
  background: var(--hud-text-1);
  clip-path: polygon(20% 0, 80% 0, 100% 100%, 0 100%);
}

/* Centering is now the default for every .card-title — .card-title-center
   is a no-op left in place so existing markup that still carries the class
   isn't broken. */

/* -------------------------------------------------------------------- */
/* Table                                                                  */
/* -------------------------------------------------------------------- */

.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
}

th {
  padding: 0.7rem 0.6rem;
  background: transparent;
  border-bottom: 1px solid var(--hud-border-2);
  font-weight: 500;
  font-family: var(--hud-font);
  color: var(--hud-text-3);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

td {
  padding: 0.7rem 0.6rem;
  border-bottom: 1px solid var(--hud-border-3);
  font-size: 0.8rem;
  font-family: var(--hud-font);
  color: var(--hud-text-2);
}

tr:hover td {
  background-color: var(--hud-hover-bg);
}

.price-up {
  color: var(--hud-up);
  font-weight: 500;
}
.price-down {
  color: var(--hud-down);
  font-weight: 500;
}

/* -------------------------------------------------------------------- */
/* Inputs / filters                                                       */
/* -------------------------------------------------------------------- */

.search-box {
  margin-bottom: 1.1rem;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--hud-border-2);
  border-radius: var(--hud-radius);
  font-family: var(--hud-font);
  font-size: 0.8rem;
  color: var(--hud-text-1);
  outline: none;
  box-sizing: border-box;
  background-color: var(--hud-card-bg);
  transition: border-color 0.15s;
}
.search-box input::placeholder {
  color: var(--hud-text-4);
}
.search-box input:focus {
  border-color: var(--hud-text-2);
}

.filter-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.7rem;
  font-size: 0.7rem;
  font-family: var(--hud-font);
  background: var(--hud-card-bg);
  border: 1px solid var(--hud-border-2);
  border-radius: var(--hud-radius);
  color: var(--hud-text-3);
}

.filter-pill input,
.filter-pill select {
  width: 64px;
  border: 1px solid var(--hud-border-2);
  border-radius: var(--hud-radius);
  padding: 0.15rem 0.35rem;
  background: transparent;
  color: var(--hud-text-1);
  font-family: var(--hud-font);
  font-size: 0.7rem;
}
.filter-pill input::placeholder {
  color: var(--hud-text-4);
}

input[type="number"],
select {
  background-color: transparent;
  color: var(--hud-text-2);
  font-family: var(--hud-font);
}

/* -------------------------------------------------------------------- */
/* Loader                                                                 */
/* -------------------------------------------------------------------- */

.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
  font-family: var(--hud-font);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--hud-text-4);
}

/* -------------------------------------------------------------------- */
/* Stats                                                                  */
/* -------------------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 0;
}

.stat-item {
  background: var(--hud-bg);
  padding: 0.65rem 0.75rem;
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-border-2);
  border-left: 2px solid var(--hud-border-1);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat-label {
  font-size: 0.65rem;
  color: var(--hud-text-3);
  font-family: var(--hud-font);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.stat-value {
  font-size: 1.1rem;
  font-weight: 300;
  font-family: var(--hud-font);
  color: var(--hud-text-1);
}

.stat-change {
  font-size: 0.72rem;
  font-weight: 500;
  font-family: var(--hud-font);
  letter-spacing: 0.02em;
  color: var(--hud-text-3);
}

/* -------------------------------------------------------------------- */
/* Badges / tags                                                          */
/* -------------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-border-2);
  font-size: 0.65rem;
  font-family: var(--hud-font);
  color: var(--hud-text-3);
  margin-left: 0.5rem;
}

.badge-primary,
.badge-accent {
  border-color: var(--hud-border-1);
  color: var(--hud-text-2);
}
.badge-danger {
  border-color: var(--hud-danger-border);
  color: var(--hud-danger-text);
}

.tag {
  font-size: 0.62rem;
  font-family: var(--hud-font);
  padding: 0.05rem 0.4rem;
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-border-2);
  background: transparent;
  color: var(--hud-text-3);
  margin-right: 0.3rem;
}
.tag-danger {
  border-color: var(--hud-danger-border);
  color: var(--hud-danger-text);
}

/* -------------------------------------------------------------------- */
/* Sidebar lists                                                          */
/* -------------------------------------------------------------------- */

.sidebar-section {
  margin-bottom: 1rem;
}

.list-item {
  padding: 0.6rem 0.1rem;
  border-bottom: 1px solid var(--hud-border-3);
  transition: background-color 0.15s;
  font-family: var(--hud-font);
}

.list-item:hover {
  background-color: var(--hud-hover-bg);
}

.list-item:last-child {
  border-bottom: none;
}

/* -------------------------------------------------------------------- */
/* Buttons                                                                */
/* -------------------------------------------------------------------- */

.btn {
  background: transparent;
  color: var(--hud-text-2);
  border: 1px solid var(--hud-border-1);
  padding: 0.45rem 0.9rem;
  border-radius: var(--hud-radius);
  cursor: pointer;
  font-family: var(--hud-font);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  transition:
    background 0.15s,
    color 0.15s;
}

.btn:hover:not(:disabled) {
  background: var(--hud-hover-bg);
  color: var(--hud-text-1);
}

.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-secondary {
  border-color: var(--hud-border-2);
  color: var(--hud-text-3);
}

/* -------------------------------------------------------------------- */
/* Links                                                                  */
/* -------------------------------------------------------------------- */

.stock-link {
  color: inherit;
  text-decoration: none;
}
.stock-link:hover {
  color: var(--hud-text-1);
}

/* -------------------------------------------------------------------- */
/* Responsive touch targets                                               */
/* -------------------------------------------------------------------- */

@media (max-width: 640px) {
  .nav-link,
  .nav-dropdown-btn,
  .nav-dropdown-item {
    padding: 0.65rem 0.9rem;
    font-size: 0.7rem;
  }

  /* .header-left's overflow-x:auto works for wide screens, but on a phone
     it hides the tail of the nav bar (later dropdowns) behind a silent
     horizontal scroll with no visible scrollbar — those items are
     effectively invisible. Wrap the nav onto its own full-width row instead
     so every dropdown stays on-screen without needing a hidden swipe. */
  .header-left {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .nav-bar {
    flex-basis: 100%;
    flex-wrap: wrap;
    order: 3;
  }
}