/* =============================================
   CORNERSTONE ACADEMY — Styles
   Template 19 · Education (NEW Category)
   Palette: Midnight Blue + Lavender
   Fonts: Albert Sans (display) + Newsreader (body)
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Albert+Sans:wght@400;500;600;700;800&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;1,6..72,400&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  --ca-midnight:      #1e293b;
  --ca-dark:          #0f172a;
  --ca-lavender:      #a78bfa;
  --ca-lilac:         #c4b5fd;
  --ca-cream:         #f5f3ff;
  --ca-gray:          #6b7280;
  --ca-white:         #ffffff;
  --ca-text:          #1e293b;
  --ca-text-light:    #94a3b8;
  --ca-purple-deep:   #7c3aed;
  --ca-surface:       #f8fafc;

  --ca-font-display:  'Albert Sans', sans-serif;
  --ca-font-body:     'Newsreader', serif;

  --ca-nav-height:    72px;
  --ca-banner-height: 36px;
  --ca-radius:        12px;
  --ca-radius-lg:     20px;
  --ca-shadow:        0 4px 24px rgba(30, 41, 59, .08);
  --ca-shadow-lg:     0 12px 40px rgba(30, 41, 59, .12);
  --ca-transition:    .3s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--ca-font-body);
  color: var(--ca-text);
  background: var(--ca-white);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: var(--ca-font-display);
  line-height: 1.2;
  font-weight: 800;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.ca-container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ---------- Demo Banner ---------- */
.ca-demo-banner {
  background: var(--ca-dark);
  color: var(--ca-lilac);
  text-align: center;
  padding: 8px 16px;
  font-family: var(--ca-font-display);
  font-size: .85rem;
  font-weight: 600;
  height: var(--ca-banner-height);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.ca-demo-banner a {
  color: var(--ca-lavender);
  text-decoration: underline;
}

/* ---------- Navigation ---------- */
.ca-nav {
  position: fixed;
  top: var(--ca-banner-height);
  left: 0;
  width: 100%;
  height: var(--ca-nav-height);
  z-index: 960;
  display: flex;
  align-items: center;
  transition: background var(--ca-transition), box-shadow var(--ca-transition);
  background: transparent;
}

.ca-nav.scrolled {
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 16px rgba(30, 41, 59, .08);
}

.ca-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.ca-logo {
  font-family: var(--ca-font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--ca-midnight);
  display: flex;
  align-items: center;
  gap: 10px;
}

.ca-logo-icon {
  width: 34px;
  height: 34px;
  background: var(--ca-lavender);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--ca-white);
  font-weight: 800;
}

.ca-nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.ca-nav-links a {
  font-family: var(--ca-font-display);
  font-size: .9rem;
  font-weight: 600;
  color: var(--ca-gray);
  transition: color var(--ca-transition);
}

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

.ca-nav-cta {
  background: var(--ca-lavender) !important;
  color: var(--ca-white) !important;
  padding: 10px 24px;
  border-radius: 50px;
  transition: all var(--ca-transition) !important;
}

.ca-nav-cta:hover {
  background: var(--ca-purple-deep) !important;
  transform: translateY(-2px);
}

/* Hamburger */
.ca-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 970;
}

.ca-hamburger span {
  width: 26px;
  height: 3px;
  background: var(--ca-midnight);
  border-radius: 3px;
  transition: var(--ca-transition);
}

.ca-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.ca-hamburger.active span:nth-child(2) { opacity: 0; }
.ca-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ---------- Hero: Stacked Banners ---------- */
.ca-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--ca-banner-height) + var(--ca-nav-height) + 40px) 0 80px;
  overflow: hidden;
}

.ca-hero-layers {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.ca-hero-layer {
  position: absolute;
  left: 0;
  right: 0;
  height: 33.33%;
}

.ca-hero-layer:nth-child(1) {
  top: 0;
  background: var(--ca-dark);
}

.ca-hero-layer:nth-child(2) {
  top: 33.33%;
  background: var(--ca-midnight);
}

.ca-hero-layer:nth-child(3) {
  top: 66.66%;
  background: linear-gradient(180deg, var(--ca-midnight) 0%, #2d3a52 100%);
}

/* Decorative elements */
.ca-hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: 5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(167, 139, 250, .1) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 2;
}

.ca-hero::after {
  content: '';
  position: absolute;
  bottom: 15%;
  left: 8%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(196, 181, 253, .08) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 2;
}

.ca-hero-content {
  position: relative;
  z-index: 3;
  max-width: 720px;
}

.ca-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(167, 139, 250, .12);
  border: 1px solid rgba(167, 139, 250, .25);
  border-radius: 50px;
  padding: 8px 20px;
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--ca-lavender);
  margin-bottom: 28px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.ca-hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  color: var(--ca-white);
  margin-bottom: 20px;
}

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

.ca-hero-text {
  font-size: 1.15rem;
  color: var(--ca-text-light);
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.ca-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.ca-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ca-lavender);
  color: var(--ca-white);
  font-family: var(--ca-font-display);
  font-size: .95rem;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  transition: all var(--ca-transition);
  border: none;
  cursor: pointer;
}

.ca-btn-primary:hover {
  background: var(--ca-purple-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(167, 139, 250, .3);
}

.ca-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--ca-white);
  font-family: var(--ca-font-display);
  font-size: .95rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 50px;
  border: 2px solid rgba(255, 255, 255, .2);
  transition: all var(--ca-transition);
  cursor: pointer;
}

.ca-btn-secondary:hover {
  border-color: var(--ca-lavender);
  color: var(--ca-lavender);
  transform: translateY(-2px);
}

/* ---------- Section Defaults ---------- */
.ca-section {
  padding: 100px 0;
}

.ca-section-header {
  text-align: center;
  margin-bottom: 60px;
}

.ca-section-label {
  display: inline-block;
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--ca-lavender);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.ca-section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: var(--ca-midnight);
  margin-bottom: 16px;
}

.ca-section-header p {
  font-size: 1.05rem;
  color: var(--ca-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Course Catalog ---------- */
.ca-courses {
  background: var(--ca-surface);
}

.ca-course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.ca-course-card {
  background: var(--ca-white);
  border-radius: var(--ca-radius-lg);
  padding: 32px;
  border: 1px solid rgba(30, 41, 59, .06);
  transition: all var(--ca-transition);
}

.ca-course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ca-shadow-lg);
  border-color: rgba(167, 139, 250, .15);
}

.ca-course-dept {
  display: inline-block;
  font-family: var(--ca-font-display);
  font-size: .7rem;
  font-weight: 700;
  color: var(--ca-white);
  background: var(--ca-lavender);
  padding: 4px 12px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.ca-course-card h3 {
  font-size: 1.1rem;
  color: var(--ca-midnight);
  margin-bottom: 8px;
}

.ca-course-code {
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 600;
  color: var(--ca-lavender);
  margin-bottom: 12px;
}

.ca-course-card p {
  font-size: .95rem;
  color: var(--ca-gray);
  margin-bottom: 16px;
}

.ca-course-meta {
  display: flex;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(30, 41, 59, .06);
  font-size: .8rem;
  color: var(--ca-gray);
}

.ca-course-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ca-enrollment-badge {
  display: inline-block;
  background: rgba(167, 139, 250, .1);
  color: var(--ca-lavender);
  font-family: var(--ca-font-display);
  font-size: .7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

/* ---------- Faculty ---------- */
.ca-faculty {
  background: var(--ca-white);
}

.ca-faculty-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.ca-faculty-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--ca-surface);
  border-radius: var(--ca-radius-lg);
  transition: all var(--ca-transition);
  border: 1px solid transparent;
}

.ca-faculty-card:hover {
  border-color: rgba(167, 139, 250, .15);
  transform: translateY(-4px);
  box-shadow: var(--ca-shadow);
}

.ca-faculty-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--ca-lilac);
}

.ca-faculty-card h4 {
  font-size: 1rem;
  color: var(--ca-midnight);
  margin-bottom: 4px;
}

.ca-faculty-dept {
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 600;
  color: var(--ca-lavender);
  margin-bottom: 4px;
}

.ca-faculty-title {
  font-size: .85rem;
  color: var(--ca-gray);
}

/* ---------- Academic Calendar ---------- */
.ca-calendar {
  background: var(--ca-dark);
  color: var(--ca-white);
}

.ca-calendar .ca-section-label {
  color: var(--ca-lavender);
}

.ca-calendar .ca-section-header h2 {
  color: var(--ca-white);
}

.ca-calendar .ca-section-header p {
  color: var(--ca-text-light);
}

.ca-semester-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}

.ca-tab {
  font-family: var(--ca-font-display);
  font-size: .85rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 50px;
  border: 1px solid rgba(167, 139, 250, .2);
  color: var(--ca-text-light);
  cursor: pointer;
  transition: all var(--ca-transition);
  background: transparent;
}

.ca-tab.active,
.ca-tab:hover {
  background: var(--ca-lavender);
  color: var(--ca-white);
  border-color: var(--ca-lavender);
}

.ca-calendar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ca-calendar-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(167, 139, 250, .12);
  border-radius: var(--ca-radius);
  padding: 28px;
  transition: all var(--ca-transition);
}

.ca-calendar-card:hover {
  background: rgba(255, 255, 255, .08);
  transform: translateY(-4px);
}

.ca-calendar-date {
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--ca-lavender);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}

.ca-calendar-card h4 {
  font-size: 1rem;
  color: var(--ca-white);
  margin-bottom: 8px;
}

.ca-calendar-card p {
  font-size: .9rem;
  color: var(--ca-text-light);
}

/* ---------- CTA ---------- */
.ca-cta {
  background: var(--ca-cream);
  padding: 80px 0;
  text-align: center;
}

.ca-cta h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--ca-midnight);
  margin-bottom: 16px;
}

.ca-cta p {
  color: var(--ca-gray);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.ca-cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.ca-footer {
  background: var(--ca-dark);
  color: var(--ca-text-light);
  padding: 60px 0 30px;
}

.ca-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.ca-footer-brand h3 {
  font-family: var(--ca-font-display);
  font-size: 1.3rem;
  color: var(--ca-white);
  margin-bottom: 12px;
}

.ca-footer-brand p {
  font-size: .9rem;
  line-height: 1.7;
  max-width: 280px;
}

.ca-footer h4 {
  font-family: var(--ca-font-display);
  font-size: .8rem;
  font-weight: 700;
  color: var(--ca-lavender);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.ca-footer ul li { margin-bottom: 10px; }
.ca-footer ul li a { font-size: .9rem; transition: color var(--ca-transition); }
.ca-footer ul li a:hover { color: var(--ca-lavender); }

.ca-footer-bottom {
  border-top: 1px solid rgba(167, 139, 250, .1);
  padding-top: 24px;
  text-align: center;
  font-size: .85rem;
  font-family: var(--ca-font-display);
}

/* ---------- Scroll Reveal ---------- */
.ca-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}

.ca-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .ca-faculty-grid { grid-template-columns: repeat(2, 1fr); }
  .ca-footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .ca-hamburger { display: flex; }

  .ca-nav-links {
    position: fixed; top: 0; right: -100%; width: 75%; max-width: 320px;
    height: 100vh; background: var(--ca-white); flex-direction: column;
    justify-content: center; gap: 24px; transition: right var(--ca-transition);
    box-shadow: -4px 0 20px rgba(30, 41, 59, .15); z-index: 950;
  }

  .ca-nav-links.open { right: 0; }
  .ca-nav-links a { font-size: 1.1rem; color: var(--ca-midnight); }

  .ca-course-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .ca-calendar-grid { grid-template-columns: 1fr; }
  .ca-semester-tabs { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .ca-section { padding: 70px 0; }
  .ca-faculty-grid { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }
  .ca-footer-grid { grid-template-columns: 1fr; }
}