/* =========================
   RESET AND GLOBAL STYLES
========================= */

:root {
  --green: #16a34a;
  --dark-green: #15803d;
  --blue: #2563eb;
  --orange: #f97316;
  --yellow: #facc15;
  --dark: #14213d;
  --text: #475569;
  --light: #f8fafc;
  --white: #ffffff;
  --border: #e2e8f0;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  cursor: pointer;
}

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

ul {
  list-style: none;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.section-heading {
  max-width: 700px;
  margin: 0 auto 45px;
  text-align: center;
}

.section-heading h2,
.about-content h2,
.challenge-intro h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
  margin: 12px 0 15px;
}

.section-heading p,
.about-content p {
  color: var(--text);
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--green);
  letter-spacing: 1.5px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 23px;
  border-radius: 12px;
  font-weight: 700;
  transition: 0.25s ease;
}

.btn-primary {
  background: var(--green);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
}

.btn-outline {
  border: 2px solid var(--blue);
  color: var(--blue);
}

.btn-outline:hover {
  background: var(--blue);
  color: var(--white);
}

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}

/* =========================
   NAVIGATION
========================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.navbar {
  min-height: 78px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.8px;
  white-space: nowrap;
}

.logo > span:last-child {
  color: var(--green);
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: var(--white);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  font-size: 1rem;
  margin-right: 5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 23px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 700;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--green);
}

.nav-links .nav-cta {
  background: var(--green);
  color: var(--white);
  padding: 11px 16px;
  border-radius: 10px;
}

.nav-links .nav-cta:hover {
  background: var(--dark-green);
  color: var(--white);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px 0;
  border-radius: 4px;
  background: var(--dark);
}

/* =========================
   HERO
========================= */

.hero {
  padding: 100px 0;
  background: linear-gradient(135deg, #effdf5 0%, #eff6ff 55%, #fff7ed 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 60px;
}

.eyebrow {
  display: inline-block;
  background: #dcfce7;
  color: #166534;
  padding: 9px 15px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 25px;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  line-height: 1.13;
  letter-spacing: -2px;
  margin-bottom: 25px;
}

.hero h1 span {
  color: var(--green);
}

.hero-content > p {
  max-width: 530px;
  font-size: 1.08rem;
  color: var(--text);
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
  color: #166534;
  font-size: 0.84rem;
  font-weight: 700;
}

/* =========================
   CODE WINDOW
========================= */

.hero-visual {
  position: relative;
  padding: 25px 0;
}

.code-window {
  background: #101827;
  color: #f8fafc;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 25px 55px rgba(15, 23, 42, 0.25);
  transform: rotate(2deg);
}

.window-top {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 20px;
  background: #1e293b;
  font-size: 0.8rem;
  color: #cbd5e1;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fb7185;
}

.window-dots i:nth-child(2) {
  background: #facc15;
}

.window-dots i:nth-child(3) {
  background: #4ade80;
}

.code-content {
  padding: 27px 22px;
  font-family: Consolas, Monaco, monospace;
  font-size: 0.85rem;
  overflow-x: auto;
}

.code-content p {
  margin-bottom: 9px;
  white-space: nowrap;
}

.code-purple {
  color: #c084fc;
}

.code-yellow {
  color: #fde68a;
}

.code-blue {
  color: #60a5fa;
}

.code-space {
  margin-top: 22px;
}

.code-output {
  margin-top: 25px;
  padding: 15px;
  background: #1e293b;
  border-radius: 10px;
  border-left: 3px solid #4ade80;
}

.code-output > span {
  display: block;
  color: #86efac;
  font-size: 0.7rem;
  margin-bottom: 10px;
}

.code-output p {
  color: #e2e8f0;
}

.floating-badge {
  position: absolute;
  background: var(--white);
  padding: 12px 17px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.13);
  font-size: 0.8rem;
  font-weight: 800;
}

.badge-top {
  top: 0;
  right: -10px;
}

.badge-bottom {
  bottom: 0;
  left: -15px;
}

/* =========================
   LEARNING PATHS
========================= */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.path-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 30px;
  transition: 0.25s;
}

.path-card:hover,
.course-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.09);
}

.path-green {
  background: #f0fdf4;
}

.path-blue {
  background: #eff6ff;
}

.path-orange {
  background: #fff7ed;
}

.path-icon {
  font-size: 2.5rem;
  margin-bottom: 18px;
}

.age-tag {
  display: inline-block;
  padding: 5px 12px;
  background: var(--white);
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 800;
}

.path-card h3 {
  font-size: 1.4rem;
  margin: 15px 0 10px;
}

.path-card p {
  color: var(--text);
  margin-bottom: 18px;
}

.path-card ul {
  margin-bottom: 23px;
}

.path-card li {
  padding: 5px 0;
  font-size: 0.9rem;
}

.path-card li::before {
  content: "✓";
  color: var(--green);
  font-weight: bold;
  margin-right: 10px;
}

.card-link {
  color: var(--blue);
  font-weight: 800;
}

.card-link:hover {
  text-decoration: underline;
}

/* =========================
   COURSES
========================= */

.courses-section {
  background: var(--light);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.course-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 25px;
  transition: 0.25s;
}

.course-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 65px;
  height: 65px;
  border-radius: 16px;
  font-size: 2rem;
  margin-bottom: 20px;
}

.course-python {
  background: #fef9c3;
}

.course-web {
  background: #dbeafe;
}

.course-games {
  background: #ffedd5;
}

.course-ai {
  background: #f3e8ff;
}

.course-card h3 {
  font-size: 1.12rem;
  line-height: 1.35;
  margin-bottom: 12px;
}

.course-card p {
  color: var(--text);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.course-level {
  display: inline-block;
  color: var(--green);
  background: #dcfce7;
  padding: 5px 11px;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 800;
}

/* =========================
   CODING CHALLENGE
========================= */

.challenge-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 45px;
  align-items: center;
  background: #eff6ff;
  padding: 55px;
  border-radius: 25px;
}

.challenge-intro p {
  color: var(--text);
}

.quiz-panel {
  background: var(--white);
  padding: 25px;
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.07);
}

.quiz-code {
  background: #0f172a;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  color: #86efac;
}

.quiz-code span {
  display: block;
  color: #94a3b8;
  font-size: 0.75rem;
  margin-bottom: 12px;
}

.quiz-code code {
  font-size: 1.1rem;
}

.quiz-panel h3 {
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.quiz-options {
  display: grid;
  gap: 10px;
}

.quiz-option {
  width: 100%;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  text-align: left;
  font-weight: 700;
  transition: 0.2s;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--blue);
  background: #eff6ff;
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-option.correct {
  background: #dcfce7;
  border-color: var(--green);
}

.quiz-option.incorrect {
  background: #fee2e2;
  border-color: #dc2626;
}

.quiz-feedback {
  min-height: 26px;
  margin-top: 14px;
  font-weight: 700;
}

.quiz-feedback.success {
  color: #166534;
}

.quiz-feedback.error {
  color: #b91c1c;
}

.reset-button {
  margin-top: 10px;
  padding: 9px 14px;
  background: var(--blue);
  color: var(--white);
  border: 0;
  border-radius: 8px;
  font-weight: 700;
}

.reset-button:hover {
  background: #1d4ed8;
}

/* =========================
   ABOUT
========================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 65px;
  align-items: center;
}

.about-art {
  min-height: 360px;
  border-radius: 25px;
  background: linear-gradient(135deg, #16a34a, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
}

.about-art-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  align-items: center;
  text-align: center;
  width: 100%;
}

.about-art-inner span {
  font-size: 3rem;
}

.about-art-inner strong {
  grid-column: 1 / -1;
  color: var(--white);
  font-size: 2.5rem;
  margin-top: 15px;
}

.about-content p {
  margin-bottom: 18px;
}

.about-content .btn {
  margin-top: 10px;
}

/* =========================
   FINAL CALL TO ACTION
========================= */

.final-cta {
  padding: 70px 0;
  text-align: center;
  background: linear-gradient(120deg, #15803d, #2563eb);
  color: var(--white);
}

.final-cta h2 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  margin-bottom: 10px;
}

.final-cta p {
  margin-bottom: 25px;
}

.btn-light {
  background: var(--white);
  color: var(--blue);
}

.btn-light:hover {
  background: #e0f2fe;
}

/* =========================
   FOOTER
========================= */

.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 55px 0 20px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-bottom: 40px;
}

.footer-logo {
  color: var(--white);
  margin-bottom: 12px;
}

.footer-content p {
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: flex-start;
}

.footer-links a:hover {
  color: #86efac;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  font-size: 0.8rem;
}

/* =========================
   RESPONSIVE DESIGN
========================= */

@media (max-width: 1000px) {
  .nav-links {
    gap: 12px;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  .course-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 15px 5%;
    box-shadow: 0 15px 25px rgba(15, 23, 42, 0.1);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 13px;
    font-size: 1rem;
  }

  .nav-links .nav-cta {
    text-align: center;
    margin-top: 10px;
  }

  .hero-grid,
  .about-grid,
  .challenge-box {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 65px 0;
  }

  .hero-grid {
    gap: 45px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .challenge-box {
    padding: 30px;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 65px 0;
  }

  .logo {
    font-size: 1.15rem;
  }

  .logo-icon {
    width: 35px;
    height: 35px;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .floating-badge {
    display: none;
  }

  .code-content {
    font-size: 0.72rem;
    padding: 20px 12px;
  }

  .code-window {
    transform: none;
  }

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

  .challenge-box {
    padding: 20px;
  }

  .quiz-panel {
    padding: 18px;
  }

  .about-art {
    min-height: 260px;
  }

  .footer-content,
  .footer-bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}