/* ============================================================
   DWLab Portal — Design System
   dwlab.bigaaai.com
   Theme: Industrial-Technical / Data Engineering Lab
   Fonts: Syne (display) + IBM Plex Sans (body) + IBM Plex Mono (code)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Palette */
  --ink:        #08090f;
  --ink-2:      #0d1017;
  --ink-3:      #131824;
  --ink-4:      #1a2033;
  --border:     #222c3f;
  --border-2:   #2a3550;
  --gold:       #f0a500;
  --gold-dim:   #c07d00;
  --gold-glow:  rgba(240,165,0,0.15);
  --gold-subtle:rgba(240,165,0,0.06);
  --teal:       #00b4cc;
  --teal-glow:  rgba(0,180,204,0.12);
  --red:        #e8415a;
  --red-glow:   rgba(232,65,90,0.12);
  --green:      #1db87a;
  --green-glow: rgba(29,184,122,0.12);
  --text:       #dce4f0;
  --text-2:     #8a99b3;
  --text-3:     #4f5f7a;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'IBM Plex Sans', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  /* Spacing */
  --radius-sm:  6px;
  --radius:     10px;
  --radius-lg:  16px;
  --radius-xl:  22px;

  /* Layout */
  --sidebar-w:  256px;
  --topbar-h:   60px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.3);
  --shadow:     0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.5);
  --glow-gold:  0 0 20px rgba(240,165,0,0.2);
  --glow-teal:  0 0 20px rgba(0,180,204,0.2);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
}

input, textarea, select {
  font-family: var(--font-body);
}

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

/* ============================================================
   BACKGROUND TEXTURE
   ============================================================ */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(240,165,0,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(240,165,0,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
}

.bg-glow-1 {
  position: fixed;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240,165,0,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: glowDrift 18s ease-in-out infinite;
}

.bg-glow-2 {
  position: fixed;
  bottom: -200px;
  left: -100px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,204,0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: glowDrift 22s ease-in-out infinite reverse;
}

@keyframes glowDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 30px) scale(0.97); }
}

/* ============================================================
   LAYOUT — APP SHELL
   ============================================================ */
.app {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  width: var(--sidebar-w);
  background: var(--ink-2);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 200;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  transition: transform 0.3s var(--ease);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Logo */
.sidebar__logo {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo__wordmark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1;
}

.logo__wordmark em {
  font-style: normal;
  color: var(--gold);
}

.logo__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 5px;
}

/* User Card */
.sidebar__user {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-card__avatar {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  flex-shrink: 0;
  box-shadow: var(--glow-gold);
}

.user-card__info { overflow: hidden; }

.user-card__name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.user-card__role {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  margin-top: 2px;
}

/* Progress ring */
.sidebar__progress {
  margin: 14px 16px;
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  flex-shrink: 0;
}

.progress__label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 8px;
}

.progress__label strong {
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: 12px;
}

.progress__track {
  height: 5px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--teal));
  border-radius: 3px;
  transition: width 0.8s var(--ease);
  position: relative;
}

.progress__fill::after {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 20px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3));
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0%   { opacity: 0; }
  50%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Nav */
.sidebar__nav { padding: 8px 0; flex: 1; }

.nav__section {
  padding: 14px 20px 6px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.nav__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  transition: all 0.15s var(--ease);
  position: relative;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.nav__item:hover {
  color: var(--text);
  background: var(--ink-3);
}

.nav__item.is-active {
  color: var(--gold);
  background: var(--gold-subtle);
}

.nav__item.is-active::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px;
  background: var(--gold);
  border-radius: 0 2px 2px 0;
  box-shadow: var(--glow-gold);
}

.nav__icon {
  font-size: 15px;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.nav__badge {
  margin-left: auto;
  background: var(--red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.nav__check {
  margin-left: auto;
  color: var(--green);
  font-size: 12px;
}

/* Sidebar Footer */
.sidebar__footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.topbar {
  height: var(--topbar-h);
  background: rgba(8,9,15,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar__breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}

.topbar__breadcrumb span {
  color: var(--text);
  font-weight: 500;
}

.topbar__divider {
  color: var(--border-2);
  margin: 0 4px;
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Status dot */
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--green);
}

.status-dot::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

/* Page content */
.content {
  padding: 28px;
  flex: 1;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.18s var(--ease);
  white-space: nowrap;
  text-decoration: none;
  font-family: var(--font-body);
  line-height: 1;
}

.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  box-shadow: 0 2px 12px rgba(240,165,0,0.25);
}

.btn--primary:hover {
  background: #f5b420;
  box-shadow: 0 4px 20px rgba(240,165,0,0.4);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--ink-3);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-subtle);
}

.btn--ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  color: var(--text);
  border-color: var(--border-2);
  background: var(--ink-3);
}

.btn--danger {
  background: var(--red-glow);
  color: var(--red);
  border: 1px solid rgba(232,65,90,0.25);
}

.btn--danger:hover {
  background: rgba(232,65,90,0.2);
}

.btn--sm {
  padding: 6px 12px;
  font-size: 11px;
}

.btn--lg {
  padding: 13px 28px;
  font-size: 15px;
}

.btn--full { width: 100%; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: border-color 0.2s var(--ease);
}

.card:hover { border-color: var(--border-2); }

.card--gold {
  border-color: rgba(240,165,0,0.2);
  background: linear-gradient(135deg, var(--ink-2), rgba(240,165,0,0.03));
}

.card--teal {
  border-color: rgba(0,180,204,0.2);
  background: linear-gradient(135deg, var(--ink-2), rgba(0,180,204,0.03));
}

/* Card accent bar on top */
.card--accent-gold { border-top: 2px solid var(--gold); }
.card--accent-teal { border-top: 2px solid var(--teal); }
.card--accent-green { border-top: 2px solid var(--green); }
.card--accent-red { border-top: 2px solid var(--red); }

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.section-heading__label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  white-space: nowrap;
}

.section-heading__line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   STAT CARDS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s var(--ease), border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-card__icon {
  font-size: 22px;
  margin-bottom: 12px;
  display: block;
}

.stat-card__value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card__label {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 400;
}

.stat-card--gold .stat-card__value { color: var(--gold); }
.stat-card--teal .stat-card__value { color: var(--teal); }
.stat-card--green .stat-card__value { color: var(--green); }
.stat-card--red .stat-card__value { color: var(--red); }

.stat-card__bg-icon {
  position: absolute;
  bottom: -8px;
  right: -4px;
  font-size: 64px;
  opacity: 0.06;
  pointer-events: none;
  line-height: 1;
}

/* ============================================================
   LAUNCHPAD CARDS
   ============================================================ */
.launchpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 36px;
}

.launch-card {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 26px 24px;
  text-decoration: none;
  transition: all 0.25s var(--ease);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
}

.launch-card::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.25s;
  border-radius: var(--radius-xl);
}

.launch-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.launch-card--jupyter {
  border-top: 2px solid #f97316;
}
.launch-card--jupyter:hover {
  border-color: #f97316;
  box-shadow: 0 12px 40px rgba(249,115,22,0.15);
}

.launch-card--pgadmin {
  border-top: 2px solid #336791;
}
.launch-card--pgadmin:hover {
  border-color: #4a90d9;
  box-shadow: 0 12px 40px rgba(74,144,217,0.15);
}

.launch-card--database {
  border-top: 2px solid var(--gold);
  cursor: default;
}
.launch-card--database:hover {
  border-color: var(--gold);
  box-shadow: var(--glow-gold);
}

.launch-card__icon { font-size: 32px; line-height: 1; }

.launch-card__name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.3px;
}

.launch-card__desc {
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
}

.launch-card__action {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  margin-top: 6px;
  transition: gap 0.2s var(--ease-spring);
}

.launch-card--jupyter .launch-card__action { color: #f97316; }
.launch-card--pgadmin .launch-card__action { color: #4a90d9; }
.launch-card--database .launch-card__action { color: var(--green); }

.launch-card:hover .launch-card__action { gap: 10px; }

/* ============================================================
   CREDENTIALS DISPLAY
   ============================================================ */
.creds-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.cred-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}

.cred-value {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--gold);
  cursor: pointer;
  transition: all 0.15s;
  user-select: all;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.cred-value:hover {
  border-color: var(--gold);
  background: var(--gold-subtle);
}

.cred-value .copy-hint {
  font-size: 10px;
  color: var(--text-3);
  opacity: 0;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.cred-value:hover .copy-hint { opacity: 1; }

/* ============================================================
   MODULE CARDS
   ============================================================ */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.module-card {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  scroll-margin-top: 80px;
  transition: border-color 0.2s;
}

.module-card.is-complete {
  border-color: rgba(29,184,122,0.25);
  background: linear-gradient(135deg, var(--ink-2), rgba(29,184,122,0.02));
}

.module-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.module-card__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.module-card__icon { font-size: 26px; line-height: 1; }

.module-card__title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 8px;
}

.module-card__desc {
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 16px;
}

.module-card__footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.module-card__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.badge--complete {
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid rgba(29,184,122,0.25);
}

.badge--pending {
  background: rgba(138,153,179,0.08);
  color: var(--text-3);
  border: 1px solid var(--border);
}

.badge--warning {
  background: rgba(240,165,0,0.1);
  color: var(--gold);
  border: 1px solid rgba(240,165,0,0.2);
}

.badge--info {
  background: var(--teal-glow);
  color: var(--teal);
  border: 1px solid rgba(0,180,204,0.2);
}

/* ============================================================
   UPLOAD / SUBMISSION
   ============================================================ */
.upload-zone {
  border: 1px dashed var(--border-2);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: var(--ink-3);
  transition: all 0.2s;
}

.upload-zone:hover {
  border-color: var(--gold);
  background: var(--gold-subtle);
}

.upload-zone__label {
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 10px;
  display: block;
}

.upload-zone input[type="file"] {
  font-size: 12px;
  color: var(--text-2);
  width: 100%;
  margin-bottom: 10px;
  background: none;
  border: none;
  outline: none;
}

.submission-receipt {
  background: var(--green-glow);
  border: 1px solid rgba(29,184,122,0.2);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 12px;
  color: var(--green);
  margin-top: 10px;
}

.grade-receipt {
  background: rgba(240,165,0,0.06);
  border: 1px solid rgba(240,165,0,0.15);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-top: 10px;
}

.grade-receipt__value {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
}

.grade-receipt__label {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 2px;
}

.grade-receipt__feedback {
  font-size: 12px;
  color: var(--text-2);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(240,165,0,0.1);
  line-height: 1.5;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap {
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  overflow-x: auto;
  margin-bottom: 28px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--ink-3);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(34,44,63,0.6);
  font-size: 13px;
  vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }

tbody tr {
  transition: background 0.12s;
}

tbody tr:hover td {
  background: rgba(26,32,51,0.6);
}

.td-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-2);
}

/* Mini progress bar in table */
.mini-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 120px;
}

.mini-progress__track {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.mini-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--teal));
  border-radius: 2px;
}

/* ============================================================
   FORMS & INPUTS
   ============================================================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
}

.form-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(240,165,0,0.1);
}

.form-input::placeholder { color: var(--text-3); }

.form-input--mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

textarea.form-input {
  resize: vertical;
  min-height: 80px;
}

/* Search bar */
.search-input {
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 14px 9px 36px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
  width: 260px;
}

.search-input:focus { border-color: var(--gold); }

.search-wrap {
  position: relative;
  display: inline-block;
}

.search-wrap::before {
  content: '⌕';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  font-size: 16px;
  pointer-events: none;
}

/* ============================================================
   TABS
   ============================================================ */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  gap: 0;
}

.tab {
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
  user-select: none;
}

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

.tab.is-active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 22px;
}

.alert--success {
  background: var(--green-glow);
  border: 1px solid rgba(29,184,122,0.2);
  color: var(--green);
}

.alert--error {
  background: var(--red-glow);
  border: 1px solid rgba(232,65,90,0.2);
  color: var(--red);
}

.alert--warning {
  background: var(--gold-subtle);
  border: 1px solid rgba(240,165,0,0.2);
  color: var(--gold);
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  z-index: 1;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(240,165,0,0.04);
  animation: slideUp 0.5s var(--ease) both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-card__logo {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo__icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
  box-shadow: var(--glow-gold);
  animation: iconGlow 3s ease-in-out infinite;
}

@keyframes iconGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(240,165,0,0.3); }
  50%       { box-shadow: 0 0 40px rgba(240,165,0,0.5); }
}

.login-logo__title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.login-logo__title em {
  font-style: normal;
  color: var(--gold);
}

.login-logo__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 1px;
  margin-top: 5px;
}

.login-card__divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}

.login-card__hints {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.login-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-3);
}

.login-hint__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 5px var(--gold);
  flex-shrink: 0;
}

.login-hint code {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--gold);
}

/* ============================================================
   GRADING FORM IN TABLE
   ============================================================ */
.grade-form {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.grade-form .form-input {
  padding: 6px 10px;
  font-size: 12px;
}

.grade-input--grade { width: 80px; }
.grade-input--feedback { width: 200px; }

/* ============================================================
   MOBILE SIDEBAR TOGGLE
   ============================================================ */
.sidebar-toggle {
  display: none;
  width: 36px;
  height: 36px;
  background: var(--ink-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  flex-shrink: 0;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-gold  { color: var(--gold); }
.text-teal  { color: var(--teal); }
.text-green { color: var(--green); }
.text-red   { color: var(--red); }
.text-muted { color: var(--text-2); }
.text-dim   { color: var(--text-3); }
.text-mono  { font-family: var(--font-mono); }
.text-display { font-family: var(--font-display); font-weight: 700; }

.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }

.mb-4  { margin-bottom: 4px; }
.mb-8  { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ============================================================
   PAGE ANIMATIONS
   ============================================================ */
.fade-in {
  animation: fadeIn 0.4s var(--ease) both;
}

.fade-up {
  animation: fadeUp 0.45s var(--ease) both;
}

.fade-up-1 { animation-delay: 0.05s; }
.fade-up-2 { animation-delay: 0.1s; }
.fade-up-3 { animation-delay: 0.15s; }
.fade-up-4 { animation-delay: 0.2s; }

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .creds-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }

  .sidebar {
    transform: translateX(-100%);
    width: 256px;
  }

  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .main { margin-left: 0; }

  .sidebar-toggle { display: flex; }

  .launchpad { grid-template-columns: 1fr; }
  .modules-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .creds-grid { grid-template-columns: 1fr 1fr; }

  .content { padding: 16px; }
  .topbar { padding: 0 16px; }
  .login-card { padding: 28px 22px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .creds-grid { grid-template-columns: 1fr; }
}