:root {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --bg-dark-soft: #1e293b;
  --bg-subtle: #f1f5f9;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --border-color: #e2e8f0;
  --border-strong: #cbd5e1;
  --brand-primary: #0284c7;
  --brand-primary-hover: #0369a1;
  --brand-emerald: #10b981;
  --brand-emerald-dark: #059669;
  --brand-amber: #f59e0b;
  --brand-rose: #e11d48;
  --brand-purple: #7c3aed;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 6px 20px rgba(15, 23, 42, 0.07);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.55;
}

/* Sticky Topbar */
.fq-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(10px);
  color: #f8fafc;
  border-bottom: 1px solid #1e293b;
}

.fq-topbar-inner {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0.65rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.fq-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  cursor: pointer;
}

.fq-logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #10b981, #0284c7);
  color: #ffffff;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.35);
}

.fq-brand-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.fq-brand-name {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.fq-domain-pill {
  font-size: 0.7rem;
  background: rgba(56, 189, 248, 0.16);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  font-weight: 600;
}

.fq-brand-sub {
  display: block;
  font-size: 0.74rem;
  color: #94a3b8;
}

.fq-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: #1e293b;
  padding: 0.25rem;
  border-radius: 11px;
}

.fq-nav-btn {
  border: none;
  background: transparent;
  color: #cbd5e1;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.fq-nav-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
}

.fq-nav-btn.active {
  background: #0284c7;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.4);
}

.fq-nav-num {
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.fq-admin-dot {
  background: #10b981;
  color: #052e16;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.05rem 0.4rem;
  border-radius: 999px;
}

.fq-topbar-right {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.fq-stat-pill {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.32rem 0.65rem;
  border-radius: 999px;
  background: #1e293b;
  border: 1px solid #334155;
  color: #f8fafc;
}

.fq-streak-pill {
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.35);
}

.fq-xp-pill {
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.35);
}

.fq-user-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #1e293b;
  border: 1px solid #334155;
  color: #f8fafc;
  padding: 0.25rem 0.65rem 0.25rem 0.3rem;
  border-radius: 999px;
  cursor: pointer;
}

.fq-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #7c3aed;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.fq-user-meta {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.1;
}

.fq-user-meta strong {
  font-size: 0.78rem;
}

.fq-user-meta small {
  font-size: 0.66rem;
  color: #38bdf8;
}

/* Main Layout */
.fq-main {
  max-width: 1220px;
  margin: 0 auto;
  padding: 1.5rem 1.2rem 3rem;
}

.fq-screen {
  display: none;
}

.fq-screen.active {
  display: block;
}

/* Buttons & Inputs */
.fq-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.fq-btn-sm {
  font-size: 0.78rem;
  padding: 0.36rem 0.72rem;
}

.fq-btn-lg {
  font-size: 0.95rem;
  padding: 0.75rem 1.25rem;
}

.fq-btn-primary {
  background: var(--brand-primary);
  color: #ffffff;
}

.fq-btn-primary:hover {
  background: var(--brand-primary-hover);
}

.fq-btn-success {
  background: var(--brand-emerald);
  color: #ffffff;
}

.fq-btn-success:hover {
  background: var(--brand-emerald-dark);
}

.fq-btn-secondary {
  background: #f1f5f9;
  color: #0f172a;
  border-color: #cbd5e1;
}

.fq-btn-secondary:hover {
  background: #e2e8f0;
}

.fq-btn-invite {
  background: rgba(16, 185, 129, 0.18);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.4);
}

.fq-btn-whatsapp {
  background: #25d366;
  color: #052e16;
}

.fq-btn-danger {
  background: #ffe4e6;
  color: #be123c;
  border-color: #fecdd3;
}

.fq-input,
.fq-select {
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  font-size: 0.88rem;
  background: #ffffff;
  color: var(--text-main);
}

/* Dashboard Hero & Recap Cards */
.fq-hero-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 1.15rem;
  margin-bottom: 1.35rem;
}

.fq-hero-card {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #f8fafc;
  padding: 1.4rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.fq-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #34d399;
  margin-bottom: 0.4rem;
}

.fq-hero-card h1 {
  margin: 0 0 0.45rem;
  font-size: 1.45rem;
  line-height: 1.25;
}

.fq-hero-card p {
  margin: 0 0 1rem;
  color: #cbd5e1;
  font-size: 0.92rem;
}

.fq-daily-bar-wrap {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.fq-daily-bar-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.fq-progress-track {
  height: 10px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  overflow: hidden;
}

.fq-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #38bdf8);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.fq-recap-card {
  background: var(--bg-card);
  border: 2px solid #bae6fd;
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.fq-recap-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.fq-recap-tag {
  background: #e0f2fe;
  color: #0369a1;
  font-size: 0.74rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.fq-recap-list {
  margin: 0.4rem 0 0.9rem;
  padding-left: 1.15rem;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.fq-recap-list li {
  margin-bottom: 0.38rem;
}

/* Subject Switcher & Module Path Grid */
.fq-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.4rem 0 0.85rem;
}

.fq-section-head h2 {
  margin: 0;
  font-size: 1.2rem;
}

.fq-pack-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.fq-pack-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.05rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.fq-pack-card.active {
  border: 2px solid var(--brand-primary);
  background: #f0f9ff;
}

.fq-pack-card.coming {
  opacity: 0.78;
  background: #f8fafc;
}

.fq-modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.fq-module-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
}

.fq-module-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.fq-module-card.completed {
  border-color: #6ee7b7;
  background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
}

.fq-module-card.locked {
  border-color: #cbd5e1;
  background: #f8fafc;
}

.fq-mod-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}

.fq-mod-num {
  font-size: 0.76rem;
  font-weight: 800;
  color: var(--brand-primary);
  background: #e0f2fe;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
}

.fq-mod-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.18rem 0.52rem;
  border-radius: 999px;
}

.fq-mod-badge.free {
  background: #dcfce7;
  color: #15803d;
}

.fq-mod-badge.unlocked {
  background: #ede9fe;
  color: #6d28d9;
}

.fq-mod-badge.locked {
  background: #fef3c7;
  color: #b45309;
}

.fq-module-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  line-height: 1.3;
}

.fq-mod-source {
  font-size: 0.74rem;
  color: var(--text-subtle);
  margin-bottom: 0.5rem;
}

.fq-mod-goal {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 0.9rem;
}

.fq-mod-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

/* V2 Upload Dropzone Seam Card */
.fq-dropzone-card {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 2px dashed #60a5fa;
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Leren Screen & Sub-Tabs */
.fq-learn-header {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.fq-subtabs {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-bottom: 1.15rem;
}

.fq-subtab-btn {
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.86rem;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  cursor: pointer;
}

.fq-subtab-btn.active {
  background: var(--bg-dark);
  color: #ffffff;
  border-color: var(--bg-dark);
}

.fq-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.45rem 1.6rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.15rem;
}

.fq-svg-box {
  margin: 1rem 0 1.25rem;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.fq-svg-box svg {
  width: 100%;
  height: auto;
  display: block;
}

.fq-concept-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1rem;
  margin: 1.1rem 0;
}

.fq-concept-sec {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
}

.fq-concept-sec h4 {
  margin: 0 0 0.45rem;
  color: #0369a1;
  font-size: 0.94rem;
}

.fq-callout {
  margin-top: 0.65rem;
  padding: 0.55rem 0.75rem;
  background: #ecfdf5;
  border-left: 3px solid #10b981;
  font-size: 0.8rem;
  color: #065f46;
  border-radius: 4px;
}

/* Interactive Calculator & Worked Example */
.fq-calc-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.fq-calc-inputs {
  display: grid;
  gap: 0.75rem;
}

.fq-calc-field {
  background: #f8fafc;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.fq-calc-field label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.fq-calc-output {
  background: var(--bg-dark);
  color: #f8fafc;
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.fq-calc-metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.55rem 0;
  border-bottom: 1px solid #334155;
}

.fq-calc-metric strong {
  font-size: 1.15rem;
  color: #34d399;
}

/* Flashcards */
.fq-flashcard-stage {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  cursor: pointer;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-md);
}

.fq-flashcard-stage.flipped {
  background: linear-gradient(135deg, #064e3b, #0f172a);
  border: 2px solid #10b981;
}

/* Quiz Questions & '+' Step-by-Step Accordion */
.fq-question-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.45rem;
  margin-bottom: 1.1rem;
  box-shadow: var(--shadow-sm);
}

.fq-options-list {
  display: grid;
  gap: 0.55rem;
  margin: 0.9rem 0;
}

.fq-option-btn {
  width: 100%;
  text-align: left;
  padding: 0.7rem 0.95rem;
  border-radius: 10px;
  border: 1.5px solid var(--border-strong);
  background: #ffffff;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  transition: all 0.12s ease;
}

.fq-option-btn:hover {
  border-color: var(--brand-primary);
  background: #f0f9ff;
}

.fq-option-btn.correct {
  border-color: #10b981;
  background: #ecfdf5;
  color: #065f46;
  font-weight: 700;
}

.fq-option-btn.wrong {
  border-color: #f43f5e;
  background: #fff1f2;
  color: #9f1239;
}

.fq-plus-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #7dd3fc;
  padding: 0.42rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  margin-top: 0.4rem;
}

.fq-plus-btn:hover {
  background: #e0f2fe;
}

.fq-step-box {
  display: none;
  margin-top: 0.8rem;
  background: #0f172a;
  color: #f8fafc;
  border-radius: 12px;
  padding: 1rem 1.15rem;
  font-size: 0.85rem;
}

.fq-step-box.open {
  display: block;
}

.fq-step-row {
  margin-bottom: 0.45rem;
}

.fq-step-row code {
  color: #38bdf8;
  font-family: monospace;
  font-size: 0.86rem;
}

/* Modals & Admin Table */
.fq-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 250;
}

.fq-modal-backdrop.open {
  display: flex;
}

.fq-modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 620px;
  width: 100%;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.28);
  overflow: hidden;
}

.fq-modal-header {
  padding: 1rem 1.3rem;
  background: #0f172a;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fq-modal-header h3 {
  margin: 0;
  font-size: 1.05rem;
}

.fq-modal-close {
  border: none;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
}

.fq-modal-body {
  padding: 1.3rem;
}

.fq-preset-grid {
  display: grid;
  gap: 0.65rem;
  margin: 0.85rem 0;
}

.fq-preset-card {
  text-align: left;
  padding: 0.75rem 0.95rem;
  border-radius: 10px;
  border: 1.5px solid var(--border-strong);
  background: #f8fafc;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.fq-preset-card:hover {
  border-color: var(--brand-primary);
  background: #f0f9ff;
}

.fq-form-row {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.fq-form-row .fq-input {
  flex: 1;
  min-width: 160px;
}

.fq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.fq-table th,
.fq-table td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.fq-footer {
  border-top: 1px solid var(--border-color);
  background: #ffffff;
  padding: 1.1rem 1.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.fq-footer-inner {
  max-width: 1220px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.fq-footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.fq-footer-link {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 860px) {
  .fq-hero-grid,
  .fq-calc-grid {
    grid-template-columns: 1fr;
  }
}