/* =========================================================
   THEME TOKENS (CSS Custom Properties)
   ========================================================= */
:root {
  --radius: 1rem;
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --radius-2xl: calc(var(--radius) + 8px);
  --radius-3xl: calc(var(--radius) + 12px);
  --radius-4xl: calc(var(--radius) + 16px);

  --background: oklch(1 0 0);
  --foreground: oklch(0.21 0.034 264.7);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.21 0.034 264.7);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.21 0.034 264.7);
  --primary: oklch(0.546 0.215 262.9);
  --primary-foreground: oklch(1 0 0);
  --primary-glow: oklch(0.623 0.188 259.8);
  --secondary: oklch(0.968 0.007 247.9);
  --secondary-foreground: oklch(0.21 0.034 264.7);
  --muted: oklch(0.984 0.003 247.9);
  --muted-foreground: oklch(0.52 0.03 257.4);
  --accent: oklch(0.714 0.143 254.6);
  --accent-foreground: oklch(0.21 0.034 264.7);
  --accent-soft: oklch(0.955 0.024 254.6);
  --whatsapp: oklch(0.63 0.17 148);
  --whatsapp-foreground: oklch(1 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.984 0.003 247.858);
  --border: oklch(0.921 0.006 264.5);
  --input: oklch(0.921 0.006 264.5);
  --ring: oklch(0.546 0.215 262.9);
  --chart-1: oklch(0.546 0.215 262.9);
  --chart-2: oklch(0.623 0.188 259.8);
  --chart-3: oklch(0.714 0.143 254.6);
  --chart-4: oklch(0.828 0.189 84.429);
  --chart-5: oklch(0.769 0.188 70.08);
  --sidebar: oklch(0.984 0.003 247.858);
  --sidebar-foreground: oklch(0.129 0.042 264.695);
  --sidebar-primary: oklch(0.208 0.042 265.755);
  --sidebar-primary-foreground: oklch(0.984 0.003 247.858);
  --sidebar-accent: oklch(0.968 0.007 247.896);
  --sidebar-accent-foreground: oklch(0.208 0.042 265.755);
  --sidebar-border: oklch(0.929 0.013 255.508);
  --sidebar-ring: oklch(0.704 0.04 256.788);

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  --gradient-hero: linear-gradient(
    180deg,
    color-mix(in oklab, var(--primary) 12%, white) 0%,
    color-mix(in oklab, var(--accent) 7%, white) 45%,
    white 100%
  );
  --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-glow));
  --gradient-cta: linear-gradient(120deg, var(--primary) 0%, var(--primary-glow) 55%, var(--accent) 100%);
  --shadow-soft: 0 1px 2px oklch(0.21 0.034 264.7 / 0.04), 0 8px 24px oklch(0.21 0.034 264.7 / 0.06);
  --shadow-lift: 0 18px 45px -18px color-mix(in oklab, var(--primary) 45%, transparent);
  --shadow-glow: 0 0 0 1px color-mix(in oklab, var(--primary) 12%, transparent),
    0 22px 60px -25px color-mix(in oklab, var(--primary) 55%, transparent);
  --transition-smooth: 400ms cubic-bezier(0.22, 1, 0.36, 1);
}

.dark {
  --background: oklch(0.129 0.042 264.695);
  --foreground: oklch(0.984 0.003 247.858);
  --card: oklch(0.208 0.042 265.755);
  --card-foreground: oklch(0.984 0.003 247.858);
  --popover: oklch(0.208 0.042 265.755);
  --popover-foreground: oklch(0.984 0.003 247.858);
  --primary: oklch(0.929 0.013 255.508);
  --primary-foreground: oklch(0.208 0.042 265.755);
  --secondary: oklch(0.279 0.041 260.031);
  --secondary-foreground: oklch(0.984 0.003 247.858);
  --muted: oklch(0.279 0.041 260.031);
  --muted-foreground: oklch(0.704 0.04 256.788);
  --accent: oklch(0.279 0.041 260.031);
  --accent-foreground: oklch(0.984 0.003 247.858);
  --destructive: oklch(0.704 0.191 22.216);
  --destructive-foreground: oklch(0.984 0.003 247.858);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.551 0.027 264.364);
  --chart-1: oklch(0.488 0.243 264.376);
  --chart-2: oklch(0.696 0.17 162.48);
  --chart-3: oklch(0.769 0.188 70.08);
  --chart-4: oklch(0.627 0.265 303.9);
  --chart-5: oklch(0.645 0.246 16.439);
  --sidebar: oklch(0.208 0.042 265.755);
  --sidebar-foreground: oklch(0.984 0.003 247.858);
  --sidebar-primary: oklch(0.488 0.243 264.376);
  --sidebar-primary-foreground: oklch(0.984 0.003 247.858);
  --sidebar-accent: oklch(0.279 0.041 260.031);
  --sidebar-accent-foreground: oklch(0.984 0.003 247.858);
  --sidebar-border: oklch(1 0 0 / 10%);
  --sidebar-ring: oklch(0.551 0.027 264.364);
}

/* =========================================================
   BASE
   ========================================================= */
* {
  border-color: var(--border);
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

/* =========================================================
   SIGNATURE UTILITY CLASSES
   (previously @utility rules — now plain CSS classes)
   ========================================================= */
.bg-hero-gradient {
  background-image: var(--gradient-hero);
}

.bg-cta-gradient {
  background-image: var(--gradient-cta);
}

.text-gradient {
  background-image: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.shadow-soft {
  box-shadow: var(--shadow-soft);
}

.shadow-lift {
  box-shadow: var(--shadow-lift);
}

.shadow-glow {
  box-shadow: var(--shadow-glow);
}

.glass-panel {
  background-color: color-mix(in oklab, white 70%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid color-mix(in oklab, var(--primary) 10%, transparent);
}

.grid-glow {
  background-image: radial-gradient(
    60% 50% at 50% 0%,
    color-mix(in oklab, var(--accent) 22%, transparent) 0%,
    transparent 70%
  );
}

/* =========================================================
   COLOR / SURFACE UTILITY CLASSES
   (equivalents of Tailwind's bg-primary, text-muted-foreground, etc.
   — needed since @theme inline is gone and these are no longer
   auto-generated by Tailwind)
   ========================================================= */
.bg-background   { background-color: var(--background); }
.bg-foreground    { background-color: var(--foreground); }
.bg-card          { background-color: var(--card); }
.bg-popover       { background-color: var(--popover); }
.bg-primary       { background-color: var(--primary); }
.bg-secondary     { background-color: var(--secondary); }
.bg-muted         { background-color: var(--muted); }
.bg-accent        { background-color: var(--accent); }
.bg-accent-soft   { background-color: var(--accent-soft); }
.bg-destructive   { background-color: var(--destructive); }
.bg-border        { background-color: var(--border); }
.bg-whatsapp      { background-color: var(--whatsapp); }

.text-foreground        { color: var(--foreground); }
.text-card-foreground   { color: var(--card-foreground); }
.text-primary           { color: var(--primary); }
.text-primary-foreground{ color: var(--primary-foreground); }
.text-secondary-foreground { color: var(--secondary-foreground); }
.text-muted-foreground  { color: var(--muted-foreground); }
.text-accent-foreground { color: var(--accent-foreground); }
.text-destructive-foreground { color: var(--destructive-foreground); }
.text-whatsapp-foreground { color: var(--whatsapp-foreground); }

.border-border   { border-color: var(--border); }
.border-input    { border-color: var(--input); }
.border-primary  { border-color: var(--primary); }

/* =========================================================
   MOTION
   (converted from framer-motion to CSS keyframes + scroll reveal)
   ========================================================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeScale {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-fade-up {
  animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.animate-fade-scale {
  animation: fadeScale 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.1s both;
}
.rounded-\[2\.5rem\] {
    border-radius: 2.5rem;
}
/* Scroll-triggered reveal: toggle .is-visible via IntersectionObserver in JS */
.animate-on-scroll {
  /* opacity: 0; */
  transform: translateY(20px);
  transition: opacity 0.6s ease-out 0.15s, transform 0.6s ease-out 0.15s;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.btnAlign {
  font-weight: 600;
  font-size: 16px;
}
.btnAlign svg{
    max-height: 20px;
}
.btnAlign.bg-accent-soft:hover{
    background-color: #e2e7ee7d;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  .animate-fade-up,
  .animate-fade-scale,
  .animate-on-scroll {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

  /* Card enter/exit + layout-shift animation, replacing framer-motion's layout + AnimatePresence */
  .course-grid {
    display: grid;
    gap: 1.5rem;
  }
  @media (min-width: 768px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .course-grid { grid-template-columns: repeat(3, 1fr); } }

  .course-card {
    animation: cardIn 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
  }
  @keyframes cardIn {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
  }

  /* Modal */
  .modal-overlay {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }
  .modal-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
  }
  .modal-panel {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .modal-overlay.is-open .modal-panel {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  .rounded-2xl {
    border-radius: calc(var(--radius) + 8px);
}