/* ==========================================================================
   Components — ZEduction v3
   ========================================================================== */

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-neutral-200);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__logo:hover {
  color: var(--color-primary-dark);
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-neutral-700);
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--color-primary);
}

.nav__cta {
  display: none;
}

.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-neutral-700);
}

.nav__toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile menu */
.nav__mobile {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.nav__mobile.is-open {
  display: block;
}

.nav__mobile a {
  display: block;
  padding: var(--space-3) 0;
  font-weight: 500;
  color: var(--color-neutral-700);
}

.nav__mobile a:hover {
  color: var(--color-primary);
}

.nav__mobile .btn {
  margin-top: var(--space-4);
  width: 100%;
  text-align: center;
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }

  .nav__cta {
    display: block;
  }

  .nav__toggle {
    display: none;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 1px 3px rgba(79, 70, 229, 0.3);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn--secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 12px 16px;
}

.btn--ghost:hover {
  background-color: var(--color-primary-light);
}

.btn--lg {
  padding: 16px 32px;
  font-size: var(--text-base);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__icon--accent {
  background-color: #FEF3C7;
  color: var(--color-accent-dark);
}

.card__icon--success {
  background-color: #D1FAE5;
  color: var(--color-success);
}

.card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.card__text {
  color: var(--color-neutral-500);
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* Feature card with top accent border */
.card--feature {
  border-top: 3px solid var(--color-primary);
}

.card--feature:nth-child(2) {
  border-top-color: var(--color-accent);
}

.card--feature:nth-child(3) {
  border-top-color: var(--color-success);
}

/* ---------- Inline Form ---------- */
.form-inline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 480px;
}

@media (min-width: 480px) {
  .form-inline {
    flex-direction: row;
  }
}

.form-inline__input {
  flex: 1;
  padding: 14px 18px;
  border: 2px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-white);
  transition: border-color var(--transition-fast);
}

.form-inline__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-inline__input::placeholder {
  color: var(--color-neutral-500);
}

.form-inline .btn {
  flex-shrink: 0;
}

.form-message {
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

.form-message--success {
  color: var(--color-success);
}

.form-message--error {
  color: #EF4444;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-neutral-700);
}

.badge svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* ---------- Trust Bar ---------- */
.trust-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
}

.trust-bar svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ---------- Steps ---------- */
.step {
  text-align: center;
  position: relative;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.step__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.step__text {
  color: var(--color-neutral-500);
  font-size: var(--text-sm);
  max-width: 280px;
  margin: 0 auto;
}

/* Connector line between steps on desktop */
@media (min-width: 960px) {
  .step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 28px;
    left: calc(50% + 40px);
    width: calc(100% - 80px);
    height: 2px;
    background: var(--color-neutral-200);
  }
}

/* ---------- Stats ---------- */
.stat {
  padding: var(--space-6);
}

.stat__number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
}

/* ---------- Testimonials ---------- */
.testimonial {
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.testimonial__quote {
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-neutral-700);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  position: relative;
  padding-left: var(--space-6);
  border-left: 3px solid var(--color-primary-light);
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.testimonial__name {
  font-weight: 600;
  color: var(--color-neutral-900);
  font-size: var(--text-sm);
}

.testimonial__role {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

/* ---------- Audience Card ---------- */
.audience-card {
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  box-shadow: var(--shadow-sm);
}

.audience-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.audience-card__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.audience-card__list {
  margin: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.audience-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-neutral-700);
}

.audience-card__list svg {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-16) var(--space-6);
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

.cta-banner .form-inline {
  margin: 0 auto;
}

.cta-banner .form-inline__input {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.cta-banner .form-inline__input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.cta-banner .form-inline__input:focus {
  border-color: var(--color-white);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.cta-banner .btn--primary {
  background: var(--color-accent);
  color: var(--color-neutral-900);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

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

.cta-banner .trust-bar {
  justify-content: center;
  margin-top: var(--space-6);
  color: rgba(255, 255, 255, 0.7);
}

.cta-banner .trust-bar svg {
  color: var(--color-accent);
}

.cta-banner .form-message--success {
  color: #A7F3D0;
}

.cta-banner .form-message--error {
  color: #FCA5A5;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-neutral-900);
  color: var(--color-neutral-200);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  color: var(--color-neutral-500);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social a {
  color: var(--color-neutral-500);
  transition: color var(--transition-fast);
}

.footer__social a:hover {
  color: var(--color-white);
}

.footer__social svg {
  width: 20px;
  height: 20px;
}

/* ---------- Hero Decoration ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 50%, #FEF3C7 100%);
}

.hero__decoration {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  pointer-events: none;
}

.hero__decoration--1 {
  width: 400px;
  height: 400px;
  background: var(--color-primary);
  top: -100px;
  right: -100px;
}

.hero__decoration--2 {
  width: 200px;
  height: 200px;
  background: var(--color-accent);
  bottom: -50px;
  left: -50px;
}

.hero__decoration--3 {
  width: 120px;
  height: 120px;
  background: var(--color-success);
  top: 50%;
  right: 30%;
}

/* Hero illustration placeholder */
.hero__illustration {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-md);
  padding: var(--space-8);
  position: relative;
}

.hero__illustration-inner {
  text-align: center;
  color: var(--color-neutral-500);
}

.hero__illustration-inner svg {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-4);
  color: var(--color-primary);
  opacity: 0.6;
}

.hero__illustration-inner p {
  font-size: var(--text-sm);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}