/* ============================================================
   APEX — components.css
   Reusable UI patterns: nav, buttons, cards, footer, forms
   ============================================================ */

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  transition: background var(--transition-med), border-color var(--transition-med);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  text-transform: uppercase;
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: none;
  gap: var(--space-5);
  align-items: center;
}

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

.nav-links a {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-ink);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta {
    display: block;
  }
}

/* Hamburger */
.nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-1);
  z-index: 1100;
}

@media (min-width: 768px) {
  .nav-hamburger {
    display: none;
  }
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav-mobile {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  transform: translateX(100%);
  transition: transform var(--transition-med);
}

.nav-mobile > .btn-primary {display: none;}

.nav-mobile.open {
  transform: translateX(0);
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: 48px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  transition: color var(--transition-fast);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--color-accent);
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 32px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
  min-height: 44px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-ghost:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.card-accent-top {
  border-top: 3px solid var(--color-accent);
}

/* Program cards */
.program-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-med);
  display: flex;
  flex-direction: column;
}

.program-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
}

.program-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  filter: grayscale(30%);
  transition: filter var(--transition-med);
}

.program-card:hover .program-card-image {
  filter: grayscale(0%);
}

.program-card-body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.program-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-2);
}

.program-card h3 {
  font-size: 28px;
  margin-bottom: var(--space-2);
}

.program-card p {
  font-size: 14px;
  flex: 1;
  margin-bottom: var(--space-4);
}

/* Testimonial cards */
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  flex-shrink: 0;
  width: 320px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--color-ink);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  opacity: 0.9;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-border);
  object-fit: cover;
  flex-shrink: 0;
}

.testimonial-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.testimonial-result {
  font-size: 11px;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-2);
}

.stars svg {
  fill: var(--color-accent);
  width: 14px;
  height: 14px;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0 var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-10);
  }
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 36px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  display: block;
}

.footer-logo span {
  color: var(--color-accent);
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-muted);
  max-width: 280px;
  margin-bottom: var(--space-4);
}

.footer-social {
  display: flex;
  gap: var(--space-2);
}

.footer-social a {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.footer-social svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-heading {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: var(--space-1);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  text-align: center;
}

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

.footer-bottom p {
  font-size: 12px;
  color: var(--color-muted);
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.form-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.form-input,
.form-textarea,
.form-select {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--color-ink);
  font-size: 15px;
  font-family: var(--font-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
  appearance: none;
  min-height: 44px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(212, 255, 0, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-muted);
}

/* ── Stats Bar ───────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

.stat-item {
  background: var(--color-surface);
  padding: var(--space-6) var(--space-4);
  text-align: center;
}

/* ── Badge ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(212, 255, 0, 0.1);
  border: 1px solid rgba(212, 255, 0, 0.3);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 2px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}