/* ============================================================
   Stellarator Database — Main Stylesheet
   ============================================================ */

/* ===== THEME VARIABLES ===== */
:root {
  --bg:                   #000000;
  --bg-card:              #111111;
  --bg-input:             #262626;
  --text:                 #ffffff;
  --text-secondary:       #aaaaaa;
  --text-nav:             #c5c5c5;
  --text-dim:             #888888;
  --border-strong:        #535353;
  --border-subtle:        #2a2a2a;
  --border-inner:         #333333;
  --border-section:       #444444;
  --input-text:           rgb(50, 200, 250);
  --teal:                 rgb(50, 200, 200);
  --teal-mid:             rgb(10, 150, 150);
  --teal-dark:            rgb(10, 110, 110);
  --heading:              rgb(243, 243, 243);
  --heading-mid:          rgb(200, 200, 200);
  --page-title:           rgb(196, 194, 194);
  --subheading:           rgb(150, 150, 150);
  --upload-h5:            rgb(184, 184, 184);
  --upload-small-h5:      rgb(114, 114, 114);
  --footer-text:          #797575;
  --auth-bg:              #0d0d0d;
  --auth-notice-bg:       #081520;
  --auth-notice-border:   #143a5a;
  --auth-notice-text:     rgb(50, 180, 200);
  --auth-help:            #555555;
  --col-hover:            rgb(25, 25, 25);
  --scrollbar-track:      #333333;
  --select-arrow: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23ffffff" width="18px" height="18px"><path d="M7 10l5 5 5-5z"/><path d="M0 0h24v24H0z" fill="none"/></svg>');
  --alert-success-bg:     #0a3d1f;
  --alert-success-border: #1a7a3f;
  --alert-success-text:   #4cdd8a;
  --alert-error-bg:       #3d0a0a;
  --alert-error-border:   #7a1a1a;
  --alert-error-text:     #ff6b6b;
  --alert-warning-bg:     #3d2d00;
  --alert-warning-border: #7a5a00;
  --alert-warning-text:   #ffcc44;
  --accent:               #7c3aed;
  --accent-hover:         #6d28d9;
  --accent-glow:          rgba(124, 58, 237, 0.4);
  --submit:               #10b981;
  --submit-hover:         #059669;
  --auth-error-bg:        #2a0808;
  --auth-error-border:    #6a1010;
  --auth-error-text:      #ff6b6b;
}

[data-theme="light"] {
  --bg:                   #f2f2f2;
  --bg-card:              #ffffff;
  --bg-input:             #ffffff;
  --text:                 #111111;
  --text-secondary:       #555555;
  --text-nav:             #333333;
  --text-dim:             #666666;
  --border-strong:        #cccccc;
  --border-subtle:        #dddddd;
  --border-inner:         #e0e0e0;
  --border-section:       #cccccc;
  --input-text:           #005599;
  --teal:                 #007a8a;
  --teal-mid:             #006070;
  --teal-dark:            #004d5e;
  --heading:              #222222;
  --heading-mid:          #333333;
  --page-title:           #2a2a2a;
  --subheading:           #666666;
  --upload-h5:            #555555;
  --upload-small-h5:      #777777;
  --footer-text:          #666666;
  --auth-bg:              #ffffff;
  --auth-notice-bg:       #e0f2f7;
  --auth-notice-border:   #4a9ab0;
  --auth-notice-text:     #004d5e;
  --auth-help:            #888888;
  --col-hover:            #eeeeee;
  --scrollbar-track:      #dddddd;
  --select-arrow: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23333333" width="18px" height="18px"><path d="M7 10l5 5 5-5z"/><path d="M0 0h24v24H0z" fill="none"/></svg>');
  --alert-success-bg:     #d4edda;
  --alert-success-border: #28a745;
  --alert-success-text:   #155724;
  --alert-error-bg:       #f8d7da;
  --alert-error-border:   #dc3545;
  --alert-error-text:     #721c24;
  --alert-warning-bg:     #fff3cd;
  --alert-warning-border: #ffc107;
  --alert-warning-text:   #856404;
  --accent:               #6d28d9;
  --accent-hover:         #5b21b6;
  --accent-glow:          rgba(109, 40, 217, 0.3);
  --submit:               #059669;
  --submit-hover:         #047857;
  --auth-error-bg:        #f8d7da;
  --auth-error-border:    #dc3545;
  --auth-error-text:      #721c24;
}

html, body {
  height: 100%;
  margin: 0;
  color: var(--text);
  background-color: var(--bg);
  font-family: Arial, Helvetica, sans-serif;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.body-style {
  margin: 0;
  padding: 0;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background-color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-strong);
  z-index: 1000;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 80%;
  box-sizing: border-box;
}

.nav-left a,
.nav-right a {
  position: relative;
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  color: var(--text-nav);
  margin: 0 10px;
  padding-bottom: 5px;
  display: inline-block;
  border-bottom: 3px solid transparent;
  transition: border-color 0.3s ease-out, color 0.3s ease;
  overflow: hidden;
}

.nav-left a::before,
.nav-right a::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease-out;
}

.nav-left a:hover,
.nav-right a:hover {
  color: var(--teal);
}

.nav-left a:hover::before,
.nav-right a:hover::before {
  transform: scaleX(1);
}

.nav-right {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.nav-auth-link {
  font-size: 15px !important;
  color: var(--text-dim) !important;
}

/* Theme toggle slider */
.theme-toggle {
  all: unset;
  cursor: pointer;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 62px;
  height: 28px;
  padding: 0 7px;
  box-sizing: border-box;
  background-color: #1e2a3a;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  margin-left: 8px;
  flex-shrink: 0;
  transition: background-color 0.35s ease, border-color 0.3s ease;
}

[data-theme="light"] .theme-toggle {
  background-color: #c8dff0;
}

.toggle-moon,
.toggle-sun {
  font-size: 13px;
  line-height: 1;
  position: relative;
  z-index: 1;
  transition: opacity 0.3s ease;
  user-select: none;
}

.toggle-moon { opacity: 1; }
.toggle-sun  { opacity: 0.4; }

[data-theme="light"] .toggle-moon { opacity: 0.4; }
[data-theme="light"] .toggle-sun  { opacity: 1; }

.toggle-knob {
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: #8ab0d0;
  top: 50%;
  left: 2px;
  transform: translateY(-50%);
  transition: left 0.35s ease, background-color 0.35s ease;
  z-index: 0;
}

[data-theme="light"] .theme-toggle .toggle-knob {
  left: calc(100% - 24px);
  background-color: #f5a623;
}

/* ===== MAIN CONTENT ===== */
.main-content {
  min-height: calc(100% - 170px);
  padding: 90px 10% 40px 10%;
  background-color: var(--bg);
  transition: background-color 0.3s ease;
}

/* ===== DJANGO MESSAGES ===== */
.django-messages {
  margin-bottom: 20px;
}

.django-message {
  padding: 12px 20px;
  border-radius: 6px;
  margin-bottom: 10px;
  font-size: 16px;
}

.django-message--success {
  background-color: var(--alert-success-bg);
  border: 1px solid var(--alert-success-border);
  color: var(--alert-success-text);
}

.django-message--error {
  background-color: var(--alert-error-bg);
  border: 1px solid var(--alert-error-border);
  color: var(--alert-error-text);
}

.django-message--warning {
  background-color: var(--alert-warning-bg);
  border: 1px solid var(--alert-warning-border);
  color: var(--alert-warning-text);
}

/* ===== PAGE TITLE ===== */
.page-title {
  width: 100%;
  display: flex;
  font-size: 40px;
  justify-content: center;
  align-items: center;
  color: var(--page-title);
  margin: 20px 0;
}

/* ===== BUTTONS ===== */
html button:not(.theme-toggle) {
  all: unset;
  padding: 8px 20px;
  font-size: 15px;
  background-color: var(--accent);
  color: #e0e0e0;
  transition: transform 0.2s;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

html button:not(.theme-toggle):hover {
  transform: scale(0.95);
}

.button-div {
  justify-content: center;
  display: flex;
  align-items: center;
  height: 54px;
  margin-top: 20px;
  margin-bottom: 20px;
}

/* ===== INPUTS & SELECTS ===== */
input[type="text"],
input[type="password"],
input[type="email"] {
  padding: 10px;
  height: 42px;
  font-size: 16px;
  border: 2px solid var(--border-strong);
  border-radius: 6px;
  outline: none;
  width: 100%;
  color: var(--input-text);
  background-color: var(--bg-input);
  box-sizing: border-box;
  transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

input[type="text"]:hover,
input[type="password"]:hover,
input[type="email"]:hover,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
  border-color: var(--teal-dark);
}

select {
  padding: 10px;
  height: 42px;
  font-size: 16px;
  border: 2px solid var(--border-strong);
  border-radius: 6px;
  outline: none;
  color: var(--input-text);
  background-color: var(--bg-input);
  box-sizing: border-box;
  transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
  text-align: center;
}

select:hover,
select:focus { border-color: var(--teal-dark); }

input[type="file"] {
  color: var(--text-secondary);
  font-size: 13px;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

input[type="file"]:hover {
  border-color: var(--teal);
}

input[type="file"]::file-selector-button {
  padding: 5px 14px;
  margin-right: 12px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
  background: var(--col-hover);
  border-color: var(--teal);
}

/* ===== HOME PAGE ===== */

/* Hero */
.home-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: auto;
  text-align: center;
  overflow: hidden;
}

.home-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 100%, rgba(50, 200, 200, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 0%, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

[data-theme="light"] .home-hero-bg {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(0, 122, 138, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 0%, rgba(109, 40, 217, 0.04) 0%, transparent 50%);
}

.home-hero-content {
  position: relative;
  z-index: 1;
  padding: 36px 20px 24px;
}

.home-title {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: 8px;
  line-height: 1.15;
  color: var(--text);
  margin: 0 0 12px;
}

.home-title-accent {
  color: var(--teal);
  text-shadow: 0 0 40px rgba(50, 200, 200, 0.25);
}

[data-theme="light"] .home-title-accent {
  text-shadow: none;
}

.home-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin: 0 0 28px;
}

/* Hero buttons */
.home-hero-buttons {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-btn {
  text-decoration: none;
  padding: 14px 44px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  transition: transform 0.2s, box-shadow 0.3s, border-color 0.3s;
  display: inline-block;
}

.hero-btn:hover {
  transform: scale(0.97);
  box-shadow: 0 0 24px var(--accent-glow);
}

.hero-btn--upload {
  background-color: var(--accent);
  color: #e8e8e8;
  border-color: var(--accent);
}

.hero-btn--query {
  background-color: transparent;
  color: var(--teal);
  border-color: var(--teal-mid);
}

.hero-btn--query:hover {
  background-color: var(--teal-dark);
  color: #e8e8e8;
  border-color: var(--teal-dark);
  box-shadow: 0 0 24px rgba(50, 200, 200, 0.2);
}

.pending-notice {
  color: var(--teal);
  font-size: 15px;
  text-align: center;
  max-width: 520px;
  line-height: 1.6;
  padding: 20px 28px;
  border: 1px solid var(--teal-mid);
  border-radius: 8px;
}

/* Video Showcase */
.home-showcase {
  padding: 0 10% 48px;
}

.home-showcase-inner {
  max-width: 768px;
  margin: 0 auto;
}

.home-video-border {
  position: relative;
  border-radius: 18px;
}

.home-video-placeholder {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.video-placeholder-content {
  text-align: center;
  color: var(--text-dim);
}

.video-placeholder-icon {
  width: 44px;
  height: 44px;
  color: var(--teal-mid);
  margin-bottom: 14px;
  opacity: 0.6;
}

.video-placeholder-content p {
  font-size: 16px;
  margin: 0 0 6px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.video-placeholder-hint {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 3px;
}

.home-showcase-img {
  width: 100%;
  display: block;
  border-radius: 16px;
  background: transparent;
}

.home-showcase-glow {
  position: relative;
  display: inline-block;
}
.home-showcase-glow::before {
  content: '';
  position: absolute;
  inset: -10%;
  border-radius: 50%;
  background: radial-gradient(ellipse at 50% 50%, rgba(50, 200, 200, 0.2), rgba(124, 58, 237, 0.1) 40%, transparent 70%);
  filter: blur(30px);
  animation: glowBreathe 4s ease-in-out infinite;
  pointer-events: none;
}
[data-theme="light"] .home-showcase-glow::before {
  background: radial-gradient(ellipse at 50% 50%, rgba(0, 122, 138, 0.15), rgba(109, 40, 217, 0.1) 40%, transparent 60%);
}

@keyframes glowBreathe {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* Stats Row */
.home-stats {
  padding: 0 10%;
  margin-bottom: 64px;
}

.home-stats-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 28px 0;
  transition: border-color 0.3s ease;
}

.home-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.home-stat-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 1px;
}

.home-stat-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.home-stat-divider {
  width: 1px;
  height: 36px;
  background-color: var(--border-subtle);
  flex-shrink: 0;
}

/* Feature Cards */
.home-features {
  padding: 0 10% 80px;
}

.home-features-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.home-feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 32px 28px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.home-feature-card:hover {
  border-color: var(--teal-dark);
  box-shadow: 0 0 30px rgba(50, 200, 200, 0.06);
}

[data-theme="light"] .home-feature-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.home-feature-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 18px;
  color: var(--teal);
  opacity: 0.8;
}

.home-feature-icon svg {
  width: 100%;
  height: 100%;
}

.home-feature-card h3 {
  color: var(--heading);
  margin: 0 0 14px;
  font-size: 19px;
  letter-spacing: 0.5px;
}

.home-feature-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 10px;
  font-size: 14px;
}

.home-feature-card p:last-child {
  margin-bottom: 0;
}

.home-feature-list {
  color: var(--text-secondary);
  line-height: 2;
  padding-left: 18px;
  margin: 0;
  font-size: 14px;
}

.home-feature-list--ordered {
  list-style-type: decimal;
}

.home-list-label {
  color: var(--teal);
  font-weight: 600;
}

.home-feature-card a {
  color: var(--teal);
}

.home-feature-card a:hover { color: var(--text); }

/* ===== UPLOAD PAGE ===== */
.upload-header {
  text-align: center;
  padding: 16px 0 8px;
}

.upload-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 3px;
  margin: 0 0 8px;
}

.upload-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 auto;
  letter-spacing: 0.3px;
  max-width: 600px;
  line-height: 1.6;
}

.upload-subtitle a {
  color: var(--teal);
  text-decoration: none;
}

.upload-subtitle a:hover { color: var(--text); }

.upload-card {
  max-width: 820px;
  margin: 16px auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px 32px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.upload-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  margin: 0 0 14px;
}

.upload-card-title--sub {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-size: 14px;
  color: var(--heading-mid);
}

.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.upload-grid--3 { grid-template-columns: 1fr 1fr 1fr; }

.upload-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.upload-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.upload-req { color: #e74c3c; }

.upload-hint {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

.upload-hint code {
  background: var(--bg-input);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 11px;
  color: var(--teal);
}

.upload-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.upload-req-note {
  font-size: 12px;
  color: var(--text-dim);
}

.error-div  { color: #ff6b6b; }
.success-div { color: #4cdd8a; }

/* ===== QUERY PAGE ===== */

/* Header */
.query-header {
  text-align: center;
  padding: 16px 0 8px;
}

.query-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 3px;
  margin: 0 0 8px;
}

.query-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  letter-spacing: 0.5px;
}

/* Help toggle */
.query-help-toggle {
  display: flex;
  justify-content: center;
  margin: 14px 0 6px;
}

#info-click {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--teal);
  transition: color 0.3s ease;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

#info-click:hover {
  color: var(--heading-mid);
  border-color: var(--border-strong);
}

.info-section-class {
  height: 0;
  display: none;
  overflow: hidden;
  transition: height 0.5s ease;
}

/* Help card */
.query-help-card {
  max-width: 900px;
  margin: 12px auto 8px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.query-help-block h4 {
  color: var(--teal);
  margin: 0 0 8px;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.query-help-block p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.8;
  margin: 0;
}

.query-help-block code {
  background: var(--bg-input);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--teal);
}

/* Query form */
.query-form-wrapper {
  display: flex;
  justify-content: center;
  padding: 16px 2% 0;
}

.query-form-card {
  width: 100%;
  max-width: 820px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 4px 32px 20px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.query-field {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.query-field--last {
  border-bottom: none;
}

.query-field-label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  width: 38%;
  flex-shrink: 0;
  padding-top: 8px;
}

.query-step {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--teal-dark);
  color: #e0e0e0;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

[data-theme="light"] .query-step {
  color: #ffffff;
}

.query-field-label h3 {
  margin: 0;
  font-size: 16px;
  color: var(--heading);
  font-weight: 600;
}

.query-field-hint {
  margin: 3px 0 0;
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 400;
}

.query-field-input {
  flex: 1;
  min-width: 0;
}

.query-field-input select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  background-image: var(--select-arrow);
  background-position: calc(100% - 10px) center;
  background-repeat: no-repeat;
  background-size: 24px;
  font-size: 14px;
}

.query-field-input input[type="text"] {
  width: 100%;
}

/* Multi-filter rows */
#filter-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.filter-row .filter-column {
  flex: 2;
  min-width: 0;
}

.filter-row .filter-operator {
  flex: 1;
  min-width: 0;
}

.filter-row .filter-value {
  flex: 1;
  min-width: 0;
}

.remove-filter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: transparent;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  padding: 0;
  line-height: 1;
}

.remove-filter:hover {
  color: #e74c3c;
  border-color: #e74c3c;
}

#add-filter {
  margin-top: 6px;
  background: transparent;
  border: 1px dashed var(--border-strong);
  border-radius: 6px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 14px;
  transition: border-color 0.2s, color 0.2s;
}

#add-filter:hover {
  border-color: var(--teal);
  color: var(--heading);
}

.query-field-input .dropdown {
  height: 42px;
  transition: height 0.5s ease;
  overflow-x: hidden;
  overflow-y: auto;
  width: 100%;
}

/* Selected column tags */
.query-selected-tags {
  display: flex;
  justify-content: flex-end;
  padding: 4px 0 0;
}

.item-container {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: flex-end;
}

.selected-item {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  cursor: default;
  font-size: 12px;
  color: var(--teal);
  transition: border-color 0.2s ease;
}

.selected-item:hover {
  border-color: var(--border-strong);
}

.selected-item .close-icon {
  cursor: pointer;
  margin-left: 6px;
  color: var(--text-dim);
  font-size: 11px;
  transition: color 0.2s;
}

.selected-item .close-icon:hover {
  color: var(--text);
}

/* Form actions */
.query-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding-top: 16px;
}

#clear {
  background: transparent !important;
  border: 1px solid var(--border-strong) !important;
  color: var(--text-secondary) !important;
}

#clear:hover {
  border-color: var(--text-dim) !important;
  color: var(--text) !important;
}

#submit { background: var(--submit); }

/* Download bar */
.query-download-bar {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

#download {
  background-color: var(--teal-dark) !important;
}

.query-dl-btn {
  background-color: var(--teal-dark) !important;
}

/* Result table */
.result-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 8px;
  overflow: hidden;
}

.result-table tr:nth-child(odd)  { background-color: var(--bg-card); }
.result-table tr:nth-child(even) { background-color: var(--bg); }
.result-table td,
.result-table tr { text-align: center; vertical-align: middle; }
.result-table td { color: var(--text-secondary); font-weight: 500; padding: 8px 12px; font-size: 14px; }
.result-table th { background-color: var(--accent); text-align: center; font-weight: 700; font-size: 14px; color: white; padding: 10px 12px; letter-spacing: 0.3px; }
.result-table tr:hover { background-color: var(--col-hover); }

#resultOutput {
  overflow-x: auto;
  margin-top: 24px;
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 2px;
}

/* Scrollbar for multi-select */
select[multiple]::-webkit-scrollbar { width: 10px; }
select[multiple]::-webkit-scrollbar-thumb { background-color: var(--teal-mid); border-radius: 6px; }
select[multiple]::-webkit-scrollbar-track { background-color: var(--scrollbar-track); border-radius: 6px; }

/* DataTables */
.dataTables_wrapper { color: var(--text-secondary); }
.dataTables_wrapper thead .sorting,
.dataTables_wrapper thead .sorting_desc,
.dataTables_wrapper thead .sorting_asc { text-align: center; }

/* Tooltip */
.tooltip { position: relative; display: inline-block; cursor: help; }
.tooltip:hover .tooltip-content { display: block; }
.tooltip-content {
  display: none;
  position: absolute;
  background-color: var(--bg-card);
  color: var(--text-secondary);
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  z-index: 100;
  width: 340px;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
}
.tooltip-content h5 { color: var(--text-secondary); margin: 4px 0; font-size: 13px; width: auto; font-weight: 400; }

[data-theme="light"] .tooltip-content {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ===== DATA DESCRIPTION PAGE ===== */
.dd-header {
  text-align: center;
  padding: 16px 0 8px;
}

.dd-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 3px;
  margin: 0 0 8px;
}

.dd-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  letter-spacing: 0.5px;
}

/* Horizontal tab bar */
.dd-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 16px auto 0;
  padding: 0 8px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  border-bottom: 1px solid var(--border-subtle);
}

.dd-tab {
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s ease;
}

.dd-tab:hover { color: var(--text); }

#tab-desc-runs[data-selected],
#tab-vmec-runs[data-selected],
#tab-configurations[data-selected],
#tab-devices[data-selected],
#tab-publications[data-selected] {
  color: var(--teal);
  border-bottom: 3px solid var(--teal);
}

/* Card that holds the active panel */
.dd-card {
  max-width: 900px;
  margin: 12px auto 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  overflow: hidden;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Panels */
.dd-panel { display: none; }
.dd-panel--active { display: block; }

.dd-columns-header {
  display: flex;
  padding: 10px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.dd-col-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.dd-col-label:first-child { width: 35%; }
.dd-col-label:last-child  { width: 65%; padding-left: 12px; }

.dd-row {
  display: flex;
  padding: 8px 24px;
  border-radius: 6px;
  margin: 0 4px;
  transition: background-color 0.25s ease;
}

.dd-row:hover { background-color: var(--col-hover); }

.dd-var-name {
  width: 35%;
  font-size: 14px;
  font-weight: 500;
  color: var(--teal-dark);
  font-family: monospace;
}

.dd-var-desc {
  width: 65%;
  padding-left: 12px;
  font-size: 14px;
  color: var(--subheading);
  line-height: 1.5;
}

/* ===== AUTH PAGES ===== */
.auth-wrapper {
  display: flex;
  justify-content: center;
  margin: 20px 0;
}

.auth-form {
  background-color: var(--auth-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 520px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.auth-field {
  margin-bottom: 18px;
}

.auth-field label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-field input {
  width: 100%;
  box-sizing: border-box;
}

.auth-field select {
  width: 100%;
  box-sizing: border-box;
}

.auth-field-error {
  color: #ff6b6b;
  font-size: 13px;
  margin-top: 4px;
}

.auth-field-help {
  color: var(--auth-help);
  font-size: 12px;
  margin-top: 4px;
}

.auth-error {
  background-color: var(--auth-error-bg);
  border: 1px solid var(--auth-error-border);
  color: var(--auth-error-text);
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 20px;
  font-size: 15px;
}

.auth-notice {
  background-color: var(--auth-notice-bg);
  border: 1px solid var(--auth-notice-border);
  color: var(--auth-notice-text);
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 16px;
}

.auth-links {
  text-align: center;
  margin-top: 20px;
  color: var(--auth-help);
  font-size: 14px;
}

.auth-links a {
  color: var(--teal);
  text-decoration: none;
}

.auth-links a:hover { color: var(--text); }

/* ===== FOOTER ===== */
.site-footer {
  width: 100%;
  border-top: 1px solid var(--border-subtle);
  padding: 16px 0;
  font-size: 12px;
  letter-spacing: 0.3px;
  box-sizing: border-box;
  transition: border-color 0.3s ease;
}

.footer-container {
  width: 80%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--footer-text);
}

.footer-left,
.footer-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand {
  font-weight: 600;
  color: var(--teal);
}

.footer-sep {
  color: var(--border-strong);
}

.site-footer a {
  color: var(--footer-text);
  text-decoration: none;
  transition: color 0.2s;
}
.site-footer a:hover {
  color: var(--teal);
}

@media screen and (max-width: 600px) {
  .footer-container {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}

/* ===== HAMBURGER BUTTON (hidden on desktop) ===== */
.nav-hamburger {
  all: unset;
  display: none;
  cursor: pointer;
  margin-left: 10px;
  flex-shrink: 0;
}

.bar1, .bar2, .bar3 {
  width: 28px;
  height: 4px;
  background-color: var(--text-nav);
  margin: 5px 0;
  border-radius: 2px;
  transition: 0.35s;
}

.nav-hamburger.open .bar1 { transform: translate(0, 9px) rotate(-45deg); }
.nav-hamburger.open .bar2 { opacity: 0; }
.nav-hamburger.open .bar3 { transform: translate(0, -9px) rotate(45deg); }

/* ===== RESPONSIVE ===== */
@media screen and (max-width: 768px) {
  .main-content { padding: 90px 4% 40px 4%; }

  /* Show hamburger, hide inline links */
  .nav-hamburger { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 70px;
    right: 0;
    width: 220px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-top: none;
    border-radius: 0 0 0 10px;
    padding: 12px 0;
    z-index: 999;
    box-shadow: -4px 4px 16px rgba(0, 0, 0, 0.4);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    display: block;
    font-size: 15px !important;
    margin: 0 !important;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-subtle);
    border-bottom-width: thin;
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a::before { display: none; }

  /* Upload page */
  .upload-title { font-size: 26px; letter-spacing: 2px; }
  .upload-card { margin: 12px 4%; padding: 20px 16px; }
  .upload-grid,
  .upload-grid--3 { grid-template-columns: 1fr; }
  .upload-grid--3 input[style*="grid-column"] { grid-column: span 1 !important; }

  #inputForm { width: 100%; }
  .exp-text { flex-direction: column; }

  /* Query page */
  .query-title { font-size: 26px; letter-spacing: 2px; }
  .query-subtitle { font-size: 13px; }
  .query-help-card { grid-template-columns: 1fr; gap: 16px; padding: 18px; }
  .query-form-card { padding: 8px 16px 24px; }
  .query-field { flex-direction: column; gap: 10px; }
  .query-field-label { width: 100%; padding-top: 0; }
  .query-field-input { width: 100%; }
  .query-selected-tags { justify-content: flex-start; }
  .filter-row { flex-wrap: wrap; }
  .filter-row .filter-column { flex: 1 1 100%; }
  .filter-row .filter-operator { flex: 0 0 85px; }
  .filter-row .filter-value { flex: 1 1 0; min-width: 0; }
  .item-container { justify-content: flex-start; }
  .tooltip-content { width: 260px; left: 0; transform: none; }

  /* Home hero */
  .home-title { font-size: 40px; letter-spacing: 5px; }
  .home-subtitle { font-size: 13px; letter-spacing: 2px; margin-bottom: 32px; }
  .home-hero { min-height: 40vh; }
  .home-hero-content { padding: 40px 16px 24px; }
  .home-hero-buttons { gap: 16px; }
  .hero-btn { padding: 12px 28px; font-size: 15px; }

  /* Home video */
  .home-showcase { padding: 0 4% 40px; }

  /* Home stats */
  .home-stats { padding: 0 4%; margin-bottom: 40px; }
  .home-stats-inner { flex-wrap: wrap; padding: 20px 0; gap: 8px 0; }
  .home-stat { min-width: 45%; padding: 8px 0; }
  .home-stat-divider { display: none; }

  /* Home feature cards */
  .home-features { padding: 0 4% 50px; }
  .home-features-inner { grid-template-columns: 1fr; gap: 16px; }

  /* Data description */
  .dd-title { font-size: 26px; letter-spacing: 2px; }
  .dd-subtitle { font-size: 13px; }
  .dd-tabs { justify-content: flex-start; margin: 12px 4% 0; gap: 0; }
  .dd-tab { padding: 8px 14px; font-size: 12px; }
  .dd-card { margin: 8px 4% 40px; }
  .dd-columns-header { padding: 8px 16px; }
  .dd-row { padding: 8px 16px; flex-direction: column; gap: 2px; }
  .dd-var-name { width: 100%; }
  .dd-var-desc { width: 100%; padding-left: 0; }
}