/* ---------- Design tokens ---------- */
:root {
  --color-primary: #1e7a44;
  --color-primary-dark: #185f36;
  --color-accent: #3498db;
  --color-accent-dark: #2f7dc0;
  --color-text: #212529;
  --color-muted: #6c757d;
  --color-surface: #ffffff;
  --color-surface-alt: #f6f8f9;
  --color-border: #e1e5e8;
  --color-danger: #c0392b;

  --radius-sm: 6px;
  --radius-md: 12px;
  --shadow-card: 0 2px 14px rgba(15, 40, 25, 0.08);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;

  --font-body: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --fs-base: clamp(0.95rem, 0.88rem + 0.3vw, 1.05rem);
  --fs-h1: clamp(1.5rem, 1.2rem + 1.4vw, 2.4rem);
  --fs-h3: clamp(1.15rem, 1rem + 0.6vw, 1.6rem);
  --fs-brand: clamp(1.05rem, 0.85rem + 1vw, 1.85rem);
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-surface-alt);
}

h1 {
  font-size: var(--fs-h1);
  text-align: center;
  margin: var(--space-3) 0;
}

h3 {
  font-size: var(--fs-h3);
  text-align: center;
}

p {
  font-size: 1em;
  text-align: justify;
  text-justify: inter-word;
  line-height: 1.6;
}

a {
  color: var(--color-accent-dark);
}

/* ---------- Navbar ---------- */
.site-navbar {
  background-color: var(--color-primary);
  /* No vertical padding on the bar itself: the logo (the tallest child)
     defines the bar's height so it touches the top and bottom edges
     exactly, instead of the bar growing tall to fit a big logo with
     padding around it. Buttons/toggler get their own padding below so
     they don't also stretch to the logo's height. */
  padding-block: 0;
}

.site-navbar .nav-inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-brand);
  color: #fff;
  white-space: normal;
  margin: 0;
  min-width: 0;
}

.site-navbar .logo {
  height: clamp(48px, 6vw, 68px);
  width: auto;
  display: block;
}

.site-navbar .nav-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-block: 0.55rem;
}

.site-navbar .navbar-toggler {
  margin-block: 0.4rem;
}

.site-navbar .nav-btn {
  font-size: clamp(0.8rem, 0.7rem + 0.2vw, 0.95rem);
  white-space: nowrap;
}

/* Desktop: brand centered between two fixed-order button groups. */
@media (min-width: 992px) {
  .site-navbar .navbar-collapse {
    display: contents !important;
  }

  .site-navbar .nav-group-left {
    order: -1;
    flex: 1 1 0;
    justify-content: flex-start;
  }

  .site-navbar .navbar-brand {
    order: 0;
    flex: 0 0 auto;
  }

  .site-navbar .nav-group-right {
    order: 1;
    flex: 1 1 0;
    justify-content: flex-end;
  }
}

/* Mobile/tablet: a compact dropdown card instead of a full-width panel. */
@media (max-width: 991.98px) {
  .site-navbar .navbar-toggler {
    flex-shrink: 0;
    background-color: #fff;
    border: none;
    box-shadow: var(--shadow-card);
  }

  .site-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(108, 117, 125, 0.95)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  /* Logo stays fixed-size on the left; the title fills and centers in the
     remaining space between the logo and the toggler. */
  .site-navbar .navbar-brand {
    flex: 1 1 auto;
  }

  .site-navbar .logo {
    flex-shrink: 0;
  }

  .site-navbar .navbar-brand span {
    flex: 1 1 auto;
    text-align: center;
  }

  .site-navbar .navbar-collapse {
    position: absolute;
    top: 100%;
    right: 0.75rem;
    margin-top: 0.4rem;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 0.75rem;
    width: min(85vw, 300px);
    z-index: 1050;
  }

  .site-navbar .nav-group {
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
    padding-block: 0;
  }

  .site-navbar .nav-group + .nav-group {
    margin-top: 0.4rem;
    padding-top: 0.4rem;
    border-top: 1px solid var(--color-border);
  }

  .site-navbar .nav-btn {
    width: 100%;
    text-align: left;
    background-color: var(--color-surface-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
  }
}

/* ---------- Buttons ---------- */
.custom-btn,
.gene-button,
.var-button,
.model-button,
.download-button {
  background-color: var(--color-accent);
  color: #fff;
  border: none;
  transition: background-color 0.2s ease;
}

.custom-btn:hover,
.gene-button:hover,
.var-button:hover,
.model-button:hover,
.download-button:hover {
  background-color: var(--color-accent-dark);
  color: #fff;
}

.gene-button,
.var-button,
.model-button {
  font-size: clamp(1rem, 0.85rem + 0.4vw, 1.3rem);
  padding: 0.5rem 1rem;
}

.var-button,
.model-button {
  flex: 1 1 220px;
  max-width: 280px;
}

.gray-button {
  background-color: #969595;
}

.gray-button:hover {
  background-color: #767676;
  color: #fff;
}

.download-button {
  display: inline-block;
  margin-top: var(--space-2);
}

/* ---------- Cards ---------- */
.card {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  max-width: 900px;
  margin: var(--space-3) auto;
}

.card-header {
  font-size: 1.15em;
  font-weight: 600;
  color: #fff;
  background-color: var(--color-accent);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-body {
  background-color: var(--color-surface);
  line-height: 1.6;
}

.card-text {
  text-align: justify;
}

/* ---------- Layout helpers ---------- */
.page-container {
  max-width: 1100px;
  margin-inline: auto;
  padding: var(--space-3) var(--space-2) var(--space-4);
}

.variants-container,
.models-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

/* ---------- Info / references ---------- */
#info {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin: var(--space-2) auto;
  max-width: 900px;
}

.reference-list {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 900px;
}

.reference-list li {
  font-size: 1em;
  color: #444;
  text-align: justify;
  margin-bottom: var(--space-1);
  word-break: break-word;
}

/* ---------- Tables ---------- */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
}

th,
td {
  text-align: center !important;
  vertical-align: middle !important;
}

/* ---------- Embedded docs ---------- */
.responsive-iframe-container {
  position: relative;
  overflow: hidden;
  padding-top: 56.25%;
}

.responsive-iframe-container iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ---------- Admin ---------- */
.admin-shell {
  max-width: 1200px;
  margin-inline: auto;
  padding: var(--space-3) var(--space-2) var(--space-4);
}

.admin-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.admin-header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.admin-search {
  display: flex;
  gap: 0.35rem;
}

.admin-search input {
  min-width: min(60vw, 240px);
}

.admin-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-3);
}

.admin-nav a {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9em;
}

.admin-nav a.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-2);
  text-align: center;
}

.stat-card .stat-value {
  font-size: clamp(1.4rem, 1.1rem + 1vw, 2.2rem);
  font-weight: 700;
  color: var(--color-primary);
}

.stat-card .stat-label {
  color: var(--color-muted);
  font-size: 0.85em;
}

.admin-login-wrap {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
}

.form-field {
  margin-bottom: var(--space-2);
}

.form-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.form-actions {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.form-hint {
  font-size: 0.85em;
  color: var(--color-muted);
  margin-top: 0.3rem;
  margin-bottom: 0;
}

.form-hint code {
  color: inherit;
}

.richtext-toolbar {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.35rem;
}

.richtext-btn {
  font-style: normal;
  line-height: 1;
}

.reference-rows {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.reference-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.reference-row .form-control {
  flex: 1 1 auto;
}

.field-errors {
  background-color: #fdecea;
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  margin-bottom: var(--space-2);
}

.confirm-delete-box {
  background-color: #fff8e6;
  border: 1px solid #e6c34d;
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  margin-bottom: var(--space-2);
}

.last-update {
  position: fixed;
  left: 0;
  bottom: 0;
  margin: 10px;
  max-width: calc(100vw - 20px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.75rem;
  color: rgba(0, 0, 0, 0.35);
  z-index: 1000;
}

/* ---------- Search ---------- */
.search-match {
  margin-bottom: 0.35rem;
}

.search-match:last-child {
  margin-bottom: 0;
}

.search-match-field {
  display: inline-block;
  font-size: 0.75em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-muted);
  margin-right: 0.4rem;
}

.search-match-snippet {
  font-size: 0.9em;
  color: var(--color-text);
}

/* ---------- Variant filter (public browse page) ---------- */
.variant-filter {
  max-width: 480px;
  margin: 0 auto var(--space-2);
}

.variant-filter-status {
  font-size: 0.85em;
  color: var(--color-muted);
  text-align: center;
  margin: 0.4rem 0 0;
  text-indent: 0;
}

/* ---------- Small screens ---------- */
@media (max-width: 575px) {
  .card {
    margin-inline: 0.5rem;
  }

  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Below this width only one button fits per row anyway -- stretch it to
     fill the row instead of centering a fixed-width button with empty
     space on both sides. */
  .var-button,
  .model-button {
    flex-basis: 100%;
    max-width: 100%;
  }

  .page-container {
    padding-inline: 1rem;
  }
}