:root {
  --navy: #0f3d5e;
  --navy-2: #092b43;
  --teal: #16a085;
  --mint: #d8f3ed;
  --sky: #eaf6fb;
  --amber: #f5b84b;
  --coral: #e76f51;
  --ink: #182b3a;
  --muted: #64748b;
  --line: #dbe5ec;
  --soft: #f6fafc;
  --radius: 8px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--teal); }
.text-navy { color: var(--navy); }
.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--navy);
  color: #fff;
  padding: .75rem 1rem;
  z-index: 9999;
}
.skip-link:focus { left: 1rem; }

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff;
  font-weight: 800;
  letter-spacing: 0;
  flex: 0 0 auto;
}
.navbar { backdrop-filter: blur(14px); }
.navbar .nav-link {
  font-weight: 650;
  color: #315066;
  border-radius: var(--radius);
  padding-inline: .75rem;
}
.navbar .nav-link.active,
.navbar .nav-link:hover { color: var(--navy); background: var(--sky); }

.btn { border-radius: var(--radius); font-weight: 700; min-height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: .4rem; }
.btn-primary { background: var(--navy); border-color: var(--navy); }
.btn-primary:hover { background: var(--navy-2); border-color: var(--navy-2); }
.btn-outline-primary { color: var(--navy); border-color: var(--navy); }
.btn-outline-primary:hover { background: var(--navy); border-color: var(--navy); }
.form-control, .form-select {
  border-radius: var(--radius);
  border-color: var(--line);
  min-height: 44px;
}
.form-control:focus, .form-select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 .2rem rgba(22, 160, 133, .16);
}

.hero-section {
  padding: 4rem 0 3rem;
  background:
    linear-gradient(135deg, rgba(15, 61, 94, .08), rgba(22, 160, 133, .10)),
    #fff;
  overflow: hidden;
}
.hero-copy h1,
.page-hero h1 {
  font-size: clamp(2.2rem, 5vw, 4.9rem);
  line-height: 1.02;
  font-weight: 850;
  max-width: 980px;
  letter-spacing: 0;
}
.lead { color: #476276; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--teal);
  font-weight: 800;
  font-size: .78rem;
}
.hero-panel,
.surface,
.feature-card,
.testimonial-card,
.discussion-card,
.tool-panel,
.pricing-card,
.dash-card,
.auth-card,
.order-summary,
.cta-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 14px 34px rgba(9, 43, 67, .08);
}
.hero-panel {
  padding: 1.25rem;
  position: relative;
}
.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(22, 160, 133, .10), rgba(245, 184, 75, .10));
  pointer-events: none;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
}
.metric-grid > div,
.admin-metrics > div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .9rem;
  background: var(--soft);
}
.metric-grid span,
.admin-metrics span {
  display: block;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 650;
}
.metric-grid strong,
.admin-metrics strong {
  display: block;
  color: var(--navy);
  font-size: 1.45rem;
  line-height: 1.1;
}
.progress { height: .7rem; border-radius: 999px; background: #edf3f6; }
.progress-bar { background: linear-gradient(90deg, var(--teal), var(--navy)); }
.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(22, 160, 133, .28);
  background: var(--mint);
  color: #096756;
  padding: .25rem .65rem;
  font-size: .78rem;
  font-weight: 800;
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}
.trust-row span {
  display: inline-flex;
  gap: .35rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: .45rem .75rem;
  color: #315066;
  font-weight: 700;
  font-size: .86rem;
}

.section-pad { padding: 3.5rem 0; }
.page-hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(135deg, rgba(15, 61, 94, .09), rgba(22, 160, 133, .08));
}
.page-hero.compact { padding: 3rem 0 2rem; }
.narrow { max-width: 820px; }
.section-heading { max-width: 800px; margin-bottom: 1.75rem; }
.section-heading h2 {
  font-weight: 820;
  color: var(--navy-2);
  letter-spacing: 0;
}
.section-heading p { color: var(--muted); }
.split-band { background: var(--soft); }
.exam-band {
  background:
    linear-gradient(135deg, rgba(15, 61, 94, .96), rgba(18, 99, 110, .94)),
    var(--navy);
  color: #fff;
}
.exam-band .text-muted { color: rgba(255,255,255,.72) !important; }

.feature-card {
  display: block;
  padding: 1rem;
  min-height: 100%;
  transition: transform .18s ease, box-shadow .18s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(9, 43, 67, .13);
}
.feature-card h2,
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 780;
  color: var(--navy-2);
  margin: .65rem 0 .4rem;
}
.feature-card p,
.testimonial-card p,
.discussion-card p { color: var(--muted); margin-bottom: .75rem; }
.icon-badge {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  color: var(--navy);
  background: var(--mint);
  font-size: 1.2rem;
}
.tool-preview { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; padding: 1rem; box-shadow: 0 12px 30px rgba(9, 43, 67, .08); }
.mini-result,
.preview-output {
  border-radius: var(--radius);
  background: var(--soft);
  border: 1px solid var(--line);
  padding: .9rem;
  color: var(--navy);
}
.topic-tile {
  min-height: 92px;
  display: grid;
  place-items: center;
  text-align: center;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  border-radius: var(--radius);
  font-weight: 800;
}
.testimonial-card { padding: 1rem; }
.testimonial-card .stars { color: var(--amber); letter-spacing: .08em; }
.testimonial-card span { display: block; color: var(--muted); font-size: .9rem; }
.cta-panel { padding: 1rem; }
.cta-panel h2,
.cta-panel h3 { color: var(--navy-2); font-weight: 800; }
.recommendation-list { display: grid; gap: .65rem; }
.recommendation-list > div {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  color: #38566b;
}
.recommendation-list i { color: var(--teal); }
.cluster-row {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}
.cluster-row a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: .45rem .7rem;
  font-weight: 700;
  color: #315066;
}
.article-body {
  font-size: 1.05rem;
}
.footer-band {
  background: #f4f8fb;
  border-top: 1px solid var(--line);
  padding-bottom: 6rem;
}
.footer-band a {
  display: block;
  color: #315066;
  margin: .45rem 0;
  font-weight: 650;
}
.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .25rem .85rem;
}
.mobile-cta {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 1040;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem;
  padding: .75rem;
  background: rgba(255,255,255,.94);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.tawk-direct-chat {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1045;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 46px;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(9, 43, 67, .22);
}
.tawk-direct-chat:hover {
  background: #0f846f;
  color: #fff;
}

.tool-workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.tool-panel { padding: 1rem; min-width: 0; }
.tool-textarea { min-height: 280px; resize: vertical; }
.tool-output {
  min-height: 390px;
  white-space: pre-wrap;
  overflow: auto;
  background: #f7fbfd;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #21384a;
}
.gpa-table { display: grid; gap: .65rem; }
.gpa-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) 88px 88px 44px;
  gap: .5rem;
  align-items: center;
}
.goal-input {
  width: 92px;
  border: 0;
  background: transparent;
  color: var(--navy);
  font: inherit;
  font-weight: 800;
}
.faq-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.discussion-card { padding: 1rem; }
.discussion-card h2 { font-size: 1.1rem; font-weight: 800; color: var(--navy-2); }
.quiz-question {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--soft);
}
.quiz-question h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy-2);
  margin: .75rem 0;
}
.quiz-option {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .7rem;
  margin-top: .5rem;
  background: #fff;
  cursor: pointer;
}
.quiz-option:has(input:checked) {
  border-color: var(--teal);
  background: var(--mint);
}

.order-progress {
  height: .75rem;
  border-radius: 999px;
  background: #e7eff4;
  overflow: hidden;
  margin-bottom: 1rem;
}
.order-progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--navy));
  transition: width .2s ease;
}
.order-step { display: none; }
.order-step.active { display: block; }
.order-summary { padding: 1rem; top: 1rem; }
.summary-line {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .55rem 0;
  border-bottom: 1px solid #eef3f6;
}
.summary-line.total strong { font-size: 1.35rem; color: var(--navy); }
.terms-check {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  border: 1px solid var(--line);
  padding: .85rem;
  border-radius: var(--radius);
  background: var(--soft);
}
.upload-preview { color: var(--muted); font-size: .9rem; }

.auth-section {
  min-height: 75vh;
  display: grid;
  align-items: center;
  background: linear-gradient(135deg, rgba(15,61,94,.08), rgba(22,160,133,.08));
  padding: 3rem 0;
}
.auth-card {
  max-width: 440px;
  margin: 0 auto;
  padding: 1.25rem;
}
.auth-card.wide { max-width: 720px; }

.dashboard-body { background: #eef5f8; }
.dashboard-shell {
  display: grid;
  min-height: 100vh;
}
.dashboard-sidebar {
  background: var(--navy-2);
  color: #fff;
  padding: 1rem;
}
.dashboard-sidebar .brand { color: #fff; font-weight: 800; }
.dashboard-nav {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .25rem;
}
.dashboard-nav a {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: rgba(255,255,255,.82);
  padding: .7rem .85rem;
  border-radius: var(--radius);
  font-weight: 700;
  white-space: nowrap;
}
.dashboard-nav a.active,
.dashboard-nav a:hover { background: rgba(255,255,255,.12); color: #fff; }
.dashboard-main { min-width: 0; padding: 1rem; }
.dashboard-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.dash-card { padding: 1rem; min-width: 0; }
.display-metric {
  font-size: 2.7rem;
  color: var(--navy);
  font-weight: 850;
  letter-spacing: 0;
}
.history-item {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  padding: .75rem 0;
  border-bottom: 1px solid #eef3f6;
  color: var(--ink);
}
.history-item span { color: var(--muted); font-size: .88rem; }
.admin-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
}
.admin-form-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem;
  margin-bottom: .85rem;
  background: var(--soft);
}
.admin-table .form-select { min-width: 120px; }
.messages-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.thread-list,
.message-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 1rem;
}
.thread-item {
  width: 100%;
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem;
  margin-bottom: .55rem;
}
.thread-item.active,
.thread-item:hover { border-color: var(--teal); background: var(--soft); }
.thread-item span { display: block; color: var(--muted); font-size: .86rem; }
.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: .75rem;
}
.message-stream {
  min-height: 420px;
  max-height: 58vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  padding: 1rem 0;
}
.message-bubble {
  max-width: 78%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .75rem;
  background: var(--soft);
}
.message-bubble.mine {
  margin-left: auto;
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.message-bubble small { display: block; opacity: .75; margin-top: .35rem; }
.message-compose {
  display: grid;
  grid-template-columns: 1fr 54px;
  gap: .5rem;
  border-top: 1px solid var(--line);
  padding-top: .75rem;
}
.compose-actions {
  display: grid;
  gap: .35rem;
}
.compose-actions .btn {
  width: 54px;
  min-height: 42px;
  padding-inline: 0;
}
.empty-state {
  min-height: 300px;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.installer-bg { background: linear-gradient(135deg, #eef8fb, #ffffff); }
.installer-card { max-width: 960px; }

@media (max-width: 575.98px) {
  .hero-section { padding: 2.6rem 0 2rem; }
  .hero-copy h1,
  .page-hero h1 { font-size: 2.18rem; }
  .section-pad { padding: 2.4rem 0; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .gpa-row { grid-template-columns: 1fr 72px 74px 42px; gap: .4rem; }
  .gpa-row .form-control,
  .gpa-row .form-select { padding-inline: .45rem; }
  .admin-metrics { grid-template-columns: 1fr 1fr; }
  .tawk-direct-chat { bottom: 84px; right: 12px; }
}

@media (min-width: 768px) {
  .auth-card { padding: 2rem; }
  .tool-workspace { grid-template-columns: 1fr 1fr; }
  .footer-band { padding-bottom: 3rem; }
  .messages-layout { grid-template-columns: minmax(240px, 340px) 1fr; }
}

@media (min-width: 992px) {
  .hero-section { padding: 6rem 0 4rem; }
  .dashboard-shell { grid-template-columns: 260px 1fr; }
  .dashboard-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
  }
  .dashboard-nav {
    display: grid;
    overflow: visible;
  }
  .dashboard-main { padding: 1.5rem; }
  .dashboard-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .span-2 { grid-column: span 2; }
  .span-3 { grid-column: span 3; }
  .admin-metrics { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (min-width: 1400px) {
  .container { max-width: 1240px; }
  .dashboard-main { padding: 2rem; }
}