/* TeKeD — Learn AI at Your Own Pace
   Design goals: large readable text, high contrast, simple layout,
   generous click targets. Built for first-time and senior learners. */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f8;
  --color-text: #1a1a1a;
  --color-navy: #1a4fa0;
  --color-navy-dark: #0f3573;
  --color-accent: #4f9a3f;
  --color-accent-dark: #3b7a2e;
  --color-border: #d8dee1;
  --focus-ring: 3px solid #0a58ca;
  --max-width: 1080px;
  --font-scale: 1;
}

* {
  box-sizing: border-box;
}

html {
  font-size: calc(18px * var(--font-scale));
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Verdana, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
}

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

a {
  color: var(--color-navy);
}

a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-navy);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* Header */
.site-header {
  background: var(--color-navy);
  color: #fff;
  padding: 0.75rem 1.25rem;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.logo {
  font-size: 3.2rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  line-height: 1;
}

.logo span {
  color: #6fc95c;
}

/* Feature icon row (from flyer: Learn ChatGPT / Write Emails / Get Answers / Stay Safe) */
.feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.25rem;
  text-align: center;
}

.feature-row .feature {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.25rem 1rem;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature p {
  margin: 0;
  font-weight: 700;
  font-size: 1.05rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.6rem 1.25rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.pill::before {
  content: "\2713";
  color: #fff;
  background: var(--color-navy);
  border-radius: 50%;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

/* Pricing cards (In-Home / Online training) */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.price-card {
  border-radius: 10px;
  padding: 1.75rem;
  border: 1px solid var(--color-border);
}

.price-card.home {
  background: #eef7ec;
}

.price-card.online {
  background: #eaf1fb;
}

.price-card h3 {
  margin-top: 0;
}

.price-card .price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-navy);
}

.price-card .price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text);
}

.info-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
}

.info-strip .item {
  font-size: 1.05rem;
}

.info-strip strong {
  display: block;
  color: var(--color-navy);
  font-size: 1.15rem;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  font-size: 1.05rem;
  padding: 0.6rem 0.9rem;
  border-radius: 6px;
  display: inline-block;
}

.main-nav a:hover,
.main-nav a:focus,
.main-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.18);
}

.text-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
}

.text-controls button {
  background: #fff;
  color: var(--color-navy);
  border: 2px solid #fff;
  border-radius: 6px;
  font-weight: 700;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.text-controls button:hover {
  background: var(--color-bg-alt);
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  color: #fff;
  padding: 3.5rem 1.25rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  margin: 0 0 1rem;
  line-height: 1.25;
}

.hero p {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  color: #eef3f5;
}

/* Buttons */
.btn {
  display: inline-block;
  font-size: 1.15rem;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-accent-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--color-navy);
  border-color: #fff;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-bg-alt);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Layout helpers */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.25rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  font-size: 2rem;
  color: var(--color-navy);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.4rem;
  color: var(--color-navy);
}

.lead {
  font-size: 1.2rem;
  max-width: 760px;
}

/* Callout boxes -- hands-on exercises, deeper-insight asides, and the
   intermediate-course teaser, visually distinct from regular .course cards
   so an instructor can spot them at a glance while pacing a live session. */
.callout {
  border-left: 5px solid var(--color-navy);
  background: var(--color-bg-alt);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.callout-label {
  display: block;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.callout-try {
  border-left-color: var(--color-accent);
}

.callout-try .callout-label {
  color: var(--color-accent-dark);
}

.callout-fact {
  border-left-color: var(--color-navy);
}

.callout-fact .callout-label {
  color: var(--color-navy);
}

.callout-teaser {
  border-left-color: var(--color-accent);
  background: #eef7ec;
}

.callout-teaser .callout-label {
  color: var(--color-accent-dark);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
}

.card h3 {
  margin-top: 0;
}

/* Course list */
.course {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
}

.course-meta {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 1rem;
  color: var(--color-navy);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

/* FAQ */
details {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

summary {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  cursor: pointer;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}

input,
textarea {
  width: 100%;
  font-size: 1.1rem;
  padding: 0.7rem;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  font-family: inherit;
}

.contact-info {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
}

.contact-info p {
  font-size: 1.15rem;
}

/* Footer */
.site-footer {
  background: var(--color-navy-dark);
  color: #eef3f5;
  text-align: center;
  padding: 2rem 1.25rem;
  font-size: 1rem;
}

.site-footer a {
  color: #6fc95c;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 2rem;
  }
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}