/* ==========================================
   LUMI - BASE.CSS
   Variables, Reset, Tipografía, Utilidades Base
   ========================================== */

/* ==========================================
   VARIABLES CSS
   ========================================== */
:root {
  /* Colores Primarios */
  --navy: #1b365d;
  --teal: #26c6da;
  --coral: #ff6b6b;
  --purple: #9575cd;
  --amber: #ffd54f;

  /* Neutrales */
  --white: #ffffff;
  --cream: #fafafa;
  --gray-light: #e0e0e0;
  --gray-text: #757575;

  /* Perfiles de Aprendizaje */
  --visual-teal: #26c6da;
  --audio-purple: #ec407a;
  --hands-orange: #ff8a65;
  --logic-indigo: #9575cd;
  --colab-blue: #5c6bc0;

  /* Tipografía */
  --font-heading: "Poppins", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.15);

  /* Transiciones */
  --transition-fast: 200ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ==========================================
   RESET Y NORMALIZACIÓN
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==========================================
   TIPOGRAFÍA BASE
   ========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy);
}

h1 {
  font-size: 56px;
}
h2 {
  font-size: 48px;
}
h3 {
  font-size: 32px;
}
h4 {
  font-size: 24px;
}
h5 {
  font-size: 20px;
}
h6 {
  font-size: 18px;
}

p {
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: inherit;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

/* ==========================================
   CONTAINER
   ========================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ==========================================
   UTILIDADES DE COLOR
   ========================================== */
.text-coral {
  color: var(--coral);
}
.text-teal {
  color: var(--teal);
}
.text-purple {
  color: var(--purple);
}
.text-amber {
  color: var(--amber);
}
.text-navy {
  color: var(--navy);
}

.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

/* ==========================================
   ANIMACIONES GLOBALES
   ========================================== */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes fillBar {
  from {
    width: 0%;
  }
}

@keyframes scaleIn {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ==========================================
   ACCESIBILIDAD
   ========================================== */
*:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background-color: var(--amber);
  color: var(--navy);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.hidden {
  display: none !important;
}

/* ==========================================
   RESPONSIVE TYPOGRAPHY
   ========================================== */
@media (max-width: 1024px) {
  h1 {
    font-size: 48px;
  }
  h2 {
    font-size: 40px;
  }
  h3 {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }
  h2 {
    font-size: 32px;
  }
  h3 {
    font-size: 24px;
  }
  .container {
    padding: 0 20px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 28px;
  }
  h2 {
    font-size: 28px;
  }
  h3 {
    font-size: 20px;
  }
  .container {
    padding: 0 16px;
  }
}

/* ==========================================
   REDUCE MOTION (Accesibilidad)
   ========================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}