:root {
  --ink: #0d172b;
  --muted: #63718b;
  --line: #dce4f0;
  --panel: #ffffff;
  --surface: #f7f1ff;
  --blue: #2051f0;
  --blue-2: #56a7ff;
  --violet: #6c35bd;
  --teal: #00c9a7;
  --orange: #e86f00;
  --dark: #080e21;
  --hero: #101d3b;
  --radius: 8px;
  --shadow: 0 18px 42px rgba(12, 24, 46, 0.14);
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto auto minmax(360px, 1fr);
  align-items: center;
  gap: 14px;
  min-height: 86px;
  padding: 8px 24px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 10px rgba(12, 24, 46, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 260px;
  color: inherit;
  text-decoration: none;
}

.brand img {
  width: 54px;
  height: 54px;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(32, 81, 240, 0.26);
}

.brand strong {
  display: block;
  font-size: clamp(1.3rem, 1.7vw, 1.9rem);
  line-height: 1.05;
  text-transform: uppercase;
}

.brand small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-weight: 650;
}

.org-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  min-height: 42px;
  padding: 8px 14px;
  color: #0f7a4b;
  border: 1px solid #9ce5bf;
  border-radius: 999px;
  background: #ecfff4;
  font-weight: 800;
  text-decoration: none;
}

.org-pill span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  line-height: 1;
}

.org-pill span::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #12b76a;
  box-shadow: 0 0 0 4px rgba(18, 183, 106, 0.16);
}

.org-pill b {
  color: #1f5b42;
  font-size: 0.82rem;
}

.nav-tabs {
  display: flex;
  align-items: stretch;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #eef3f9;
  overflow-x: auto;
}

.tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 148px;
  min-height: 56px;
  padding: 10px 18px;
  color: #4b5b74;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 800;
  white-space: nowrap;
}

.icon {
  display: inline-grid;
  place-items: center;
  min-width: 32px;
  height: 28px;
  padding: 0 6px;
  border-radius: 14px;
  background: rgba(13, 23, 43, 0.08);
  font-size: 0.66rem;
  font-weight: 950;
}

.tab.active .icon {
  background: rgba(255, 255, 255, 0.18);
}

.tab.active {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(32, 81, 240, 0.22);
}

.tab b {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  height: 26px;
  color: var(--blue);
  border-radius: 50%;
  background: #dbeafe;
}

.hero {
  background:
    radial-gradient(circle at 48% 48%, rgba(108, 53, 189, 0.16), transparent 34%),
    radial-gradient(circle at 82% 12%, rgba(86, 167, 255, 0.2), transparent 24%),
    linear-gradient(135deg, #fbf8ff 0%, #f0e7ff 52%, #eaf4ff 100%);
  color: var(--ink);
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 78px 24px 58px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 28px;
  padding: 8px 18px;
  border: 1px solid rgba(108, 53, 189, 0.24);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.62);
  color: #5c3aa8;
  font-weight: 850;
}

.eyebrow::before {
  content: "*";
}

.hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(2.45rem, 5.1vw, 4.85rem);
  line-height: 1.08;
}

.hero h1 span {
  color: #5d43c4;
}

.hero-copy {
  max-width: 860px;
  margin: 26px 0 30px;
  color: #4f5d78;
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  line-height: 1.7;
}

.hero-actions,
.form-actions,
.section-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.primary-action,
.floating-register {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 14px 26px;
  border: 0;
  border-radius: 28px;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-weight: 900;
  box-shadow: 0 14px 34px rgba(32, 81, 240, 0.28);
}

.intake-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 12px 22px;
  border: 1px solid rgba(108, 53, 189, 0.18);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.68);
  color: #4f5d78;
  font-weight: 800;
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.intake-badge:hover,
.intake-badge:focus-visible {
  border-color: rgba(32, 81, 240, 0.38);
  box-shadow: 0 12px 28px rgba(32, 81, 240, 0.16);
  transform: translateY(-1px);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 48px;
  max-width: 640px;
}

.stats article {
  min-height: 136px;
  padding: 24px;
  border: 1px solid rgba(108, 53, 189, 0.16);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 28px rgba(71, 44, 124, 0.08);
}

.stats span,
.stats small {
  display: block;
  color: #69758e;
  font-weight: 750;
}

.stats strong {
  display: block;
  margin: 12px 0 6px;
  color: var(--ink);
  font-size: 2rem;
  line-height: 1;
}

.stats .connected {
  color: var(--ink);
  font-size: 1.35rem;
}

.stats .connected::before {
  content: "OK";
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 10px;
  border-radius: 50%;
  color: var(--teal);
  border: 2px solid var(--teal);
  font-size: 0.6rem;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: 1280px;
  margin: 54px auto 0;
  padding: 30px 34px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 8px 22px rgba(12, 24, 46, 0.1);
}

.chip-row {
  display: flex;
  gap: 10px;
  min-width: 0;
  overflow-x: auto;
}

.chip {
  flex: 0 0 auto;
  min-height: 42px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #f2f6fb;
  color: #4b5b74;
  font-weight: 850;
}

.chip.active {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
  box-shadow: 0 8px 18px rgba(32, 81, 240, 0.22);
}

.course-section {
  max-width: 1380px;
  margin: 58px auto 70px;
  padding: 0 24px;
}

.section-heading {
  justify-content: space-between;
  margin-bottom: 30px;
}

.section-heading h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.45rem);
}

.floating-register {
  text-transform: none;
  border-radius: 18px;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px;
}

.course-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 14px 30px rgba(12, 24, 46, 0.08);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 44px rgba(12, 24, 46, 0.14);
}

.course-card.selected {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(32, 81, 240, 0.2), 0 22px 48px rgba(32, 81, 240, 0.18);
}

.course-art {
  position: relative;
  min-height: 230px;
  padding: 18px;
  overflow: hidden;
  color: #fff;
  background: var(--art);
}

.course-art::before,
.course-art::after {
  content: "";
  position: absolute;
  inset: auto;
  pointer-events: none;
}

.course-art::before {
  width: 74%;
  height: 74%;
  right: -20%;
  top: -20%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  filter: blur(2px);
}

.course-art::after {
  left: 0;
  right: 0;
  bottom: 0;
  height: 44%;
  background: linear-gradient(180deg, transparent, rgba(5, 8, 23, 0.76));
}

.course-art.aws {
  --art:
    radial-gradient(circle at 58% 34%, rgba(86, 167, 255, 0.5), transparent 22%),
    linear-gradient(135deg, #050817, #13356a 52%, #00a8c8);
}

.course-art.ai {
  --art:
    radial-gradient(circle at 24% 38%, rgba(255, 255, 255, 0.56), transparent 21%),
    linear-gradient(135deg, #e86f00 0%, #eabdca 32%, #7033c4 68%, #0e142c 100%);
}

.course-art.analytics {
  --art:
    linear-gradient(90deg, rgba(5, 8, 23, 0.82), transparent),
    repeating-linear-gradient(90deg, rgba(0, 201, 167, 0.4) 0 8px, transparent 8px 28px),
    linear-gradient(135deg, #071021, #155d7a, #21c997);
}

.course-art.dataeng {
  --art:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.12) 0 2px, transparent 2px 22px),
    linear-gradient(135deg, #101d3b, #5d39c7 45%, #00a8c8);
}

.course-art.python {
  --art:
    radial-gradient(circle at 78% 20%, rgba(247, 181, 0, 0.7), transparent 18%),
    linear-gradient(135deg, #15264c, #2b7cff 46%, #f4b000);
}

.course-art.devops {
  --art:
    linear-gradient(120deg, rgba(8, 14, 33, 0.25), rgba(8, 14, 33, 0.85)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.18) 0 8px, transparent 8px 24px),
    linear-gradient(135deg, #6c35bd, #2051f0, #00c9a7);
}

.course-art.bigdata {
  --art:
    repeating-linear-gradient(90deg, rgba(86, 167, 255, 0.55) 0 10px, transparent 10px 25px),
    linear-gradient(135deg, #061126, #0e557b 47%, #21284e);
}

.course-art.terraform {
  --art:
    radial-gradient(circle at 80% 72%, rgba(0, 201, 167, 0.45), transparent 24%),
    linear-gradient(135deg, #6c35bd, #273c92 48%, #071021);
}

.course-code,
.course-level,
.course-meta,
.course-category,
.select-dot {
  position: relative;
  z-index: 2;
}

.course-code,
.course-level,
.course-meta,
.course-category {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 14px;
  border-radius: 18px;
  font-weight: 900;
}

.course-code {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
}

.course-level,
.course-meta {
  background: rgba(8, 14, 33, 0.72);
}

.course-category {
  position: absolute;
  right: 18px;
  bottom: 24px;
  background: rgba(32, 81, 240, 0.56);
}

.course-meta {
  position: absolute;
  left: 18px;
  bottom: 24px;
}

.select-dot {
  position: absolute;
  right: 18px;
  top: 22px;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 2px solid rgba(13, 23, 43, 0.18);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  color: #fff;
  font-size: 1.55rem;
  font-weight: 950;
}

.course-card.selected .select-dot {
  border-color: rgba(255, 255, 255, 0.4);
  background: var(--blue);
}

.course-body {
  padding: 30px 32px 26px;
}

.course-body h3 {
  margin: 0 0 16px;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.25;
}

.description {
  min-height: 78px;
  margin: 0;
  color: #475873;
  font-size: 1.04rem;
  line-height: 1.58;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.skill-list li {
  padding: 6px 10px;
  border: 1px solid #d8e6f8;
  border-radius: 16px;
  background: #f2f7ff;
  color: #355174;
  font-size: 0.9rem;
  font-weight: 750;
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid #e7edf5;
}

.instructor {
  min-width: 0;
}

.instructor strong,
.instructor small {
  display: block;
}

.instructor strong {
  font-size: 1.05rem;
}

.instructor small {
  color: #64738d;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-button,
.download-button,
.select-button,
.secondary-action {
  min-height: 46px;
  border: 0;
  border-radius: var(--radius);
  font-weight: 900;
}

.detail-button {
  padding: 0 14px;
  background: #eff4fb;
  color: #355174;
  font-size: 0.95rem;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  color: var(--blue);
  background: #eef4ff;
  text-decoration: none;
}

.select-button,
.secondary-action {
  padding: 10px 18px;
  color: #fff;
  background: var(--dark);
}

.course-card.selected .select-button {
  background: var(--blue);
}

.registration {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(420px, 1.25fr);
  gap: 34px;
  max-width: 1280px;
  margin: 0 auto 80px;
  padding: 38px;
  color: #fff;
  border-radius: 24px;
  background:
    radial-gradient(circle at 88% 20%, rgba(0, 201, 167, 0.2), transparent 28%),
    linear-gradient(135deg, #101d3b, #201340);
}

.registration h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3.4vw, 3.2rem);
}

.registration-copy p:not(.eyebrow) {
  color: #c0cadc;
  line-height: 1.7;
}

.eyebrow.light {
  color: #b8d4ff;
  background: rgba(255, 255, 255, 0.08);
}

.registration-form {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.registration-form label {
  display: grid;
  gap: 8px;
  color: #d8e1ef;
  font-weight: 800;
}

.registration-form input,
.registration-form select {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: #fff;
}

.phone-input-group {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  min-height: 48px;
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: #fff;
}

.phone-prefix {
  display: inline-grid;
  place-items: center;
  align-self: stretch;
  min-width: 64px;
  padding: 0 14px;
  color: #34435b;
  background: #eef3fa;
  border-right: 1px solid #dbe4f0;
  font-weight: 950;
}

.registration-form .phone-input-group input {
  min-height: 46px;
  border: 0;
  border-radius: 0;
}

.selected-panel {
  margin: 22px 0;
  padding: 18px;
  border-radius: var(--radius);
  background: rgba(8, 14, 33, 0.34);
}

.selected-panel h3 {
  margin: 0 0 12px;
}

.selected-list {
  display: grid;
  gap: 10px;
}

.selected-list.empty {
  color: #a9b6cd;
}

.registration-status {
  display: none;
  margin: 0 0 22px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  color: #e5edf9;
  background: rgba(8, 14, 33, 0.34);
  font-weight: 800;
  line-height: 1.45;
}

.registration-status.show {
  display: block;
}

.registration-status.success {
  border-color: rgba(0, 201, 167, 0.42);
  background: rgba(0, 201, 167, 0.14);
}

.registration-status.notice {
  border-color: rgba(247, 181, 0, 0.46);
  background: rgba(247, 181, 0, 0.15);
}

.registration-status.error {
  border-color: rgba(232, 111, 0, 0.52);
  background: rgba(232, 111, 0, 0.16);
}

.selected-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
}

.selected-item button {
  border: 0;
  background: transparent;
  color: #fff;
  font-weight: 950;
}

.secondary-action {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.course-dialog {
  width: min(860px, calc(100vw - 32px));
  max-height: min(780px, calc(100vh - 32px));
  padding: 0;
  border: 0;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.course-dialog::backdrop {
  background: rgba(5, 8, 23, 0.56);
  backdrop-filter: blur(4px);
}

.dialog-close {
  position: absolute;
  right: 18px;
  top: 14px;
  z-index: 2;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 1.8rem;
}

.dialog-hero {
  padding: 34px 34px 28px;
  color: #fff;
  background:
    radial-gradient(circle at 86% 10%, rgba(0, 201, 167, 0.24), transparent 26%),
    linear-gradient(135deg, #101d3b, #6c35bd);
}

.dialog-hero h2 {
  max-width: 720px;
  margin: 12px 0 8px;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
}

.dialog-body {
  display: grid;
  gap: 22px;
  padding: 28px 34px 34px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
}

.dialog-download {
  min-height: 48px;
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 26px rgba(32, 81, 240, 0.22);
}

.dialog-body h3 {
  margin: 0 0 10px;
}

.outline-grid,
.outcome-grid,
.week-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.outline-card,
.outcome-card,
.week-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
}

.outline-card b,
.outcome-card b,
.week-card b {
  display: block;
  margin-bottom: 6px;
}

.outline-card p,
.outcome-card p,
.week-card p {
  margin: 0;
  color: #52627b;
  line-height: 1.5;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
  max-width: 360px;
  padding: 14px 18px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--dark);
  box-shadow: var(--shadow);
  transform: translateY(24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .org-pill,
  .nav-tabs {
    grid-column: 1 / -1;
  }

  .stats,
  .course-grid,
  .registration {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 780px) {
  .topbar {
    padding: 10px 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    width: 46px;
    height: 46px;
  }

  .brand strong {
    font-size: 1.08rem;
  }

  .brand small {
    font-size: 0.78rem;
  }

  .tab {
    min-width: 132px;
    min-height: 48px;
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  .hero-content {
    padding: 52px 18px 42px;
  }

  .hero-actions,
  .form-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-action,
  .intake-badge,
  .floating-register,
  .secondary-action {
    width: 100%;
  }

  .stats,
  .course-grid,
  .registration,
  .field-grid,
  .outline-grid,
  .outcome-grid,
  .week-grid {
    grid-template-columns: 1fr;
  }

  .controls {
    align-items: stretch;
    flex-direction: column;
    margin: 28px 14px 0;
    padding: 18px;
  }

  .course-section {
    margin-top: 36px;
    padding: 0 14px;
  }

  .course-body {
    padding: 24px 20px;
  }

  .course-art {
    min-height: 210px;
  }

  .course-category,
  .course-meta {
    max-width: calc(100% - 36px);
  }

  .course-category {
    left: 18px;
    right: auto;
    bottom: 66px;
  }

  .card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .instructor {
    grid-column: 1 / -1;
  }

  .detail-button,
  .download-button,
  .select-button {
    width: 100%;
  }

  .registration {
    margin: 0 14px 58px;
    padding: 22px;
  }

  .registration-form {
    padding: 18px;
  }
}