@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors from Image: White, Vibrant Blue, Deep Blue */
  --color-primary: #006edc;
  --color-deep: #004a99;
  --color-dark: #003366;
  --color-accent: #5690ee;
  --color-cta: #00e5ff;
  --color-white: #FFFFFF;
  --color-light: #f8fafc;

  /* Glassmorphism Tokens */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-blur: blur(12px);

  /* Typography - Accessibility Focused */
  --font-main: 'Outfit', sans-serif;
  --font-size-base: 1.125rem;
  /* 18px */
  --line-height-body: 1.7;
  --max-content-width: 70ch;
  /* Optimal reading length */

  /* Spacing & Borders */
  --radius-lg: 1.5rem;
  /* 24px */
  --radius-md: 1rem;
  /* 16px */
  --radius-sm: 0.75rem;
  /* 12px */
  --radius-btn: 3.125rem;
  /* 50px */

  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-premium: 0 1.25rem 2.5rem -0.625rem rgba(0, 0, 0, 0.2);
}

/* ── Reset & Base ───────────────────────────────────────────────────────── */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  color: white; /* Default to white for the blue background */
  background: var(--color-deep);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Accessibility: Focus visible */
:focus-visible {
  outline: 4px solid var(--color-cta);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* Background Animation Canvas */
#notes-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle at top right, var(--color-primary), var(--color-deep));
}

header,
main,
footer {
  position: relative;
}

/* ── Layout Utilities ─────────────────────────────────────────────────── */
.container {
  max-width: 81.25rem;
  /* 1300px */
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 7.5rem 0;
  /* 120px */
}

.bg-light {
  background: var(--color-light);
  color: var(--color-dark);
}

/* Ensure text inside light containers is always dark */
.bg-light h1, .bg-light h2, .bg-light h3, .bg-light h4, .bg-light p, .bg-light li,
.card h1, .card h2, .card h3, .card h4, .card p, .card li, .card strong,
.info-box h1, .info-box h2, .info-box h3, .info-box h4, .info-box p, .info-box li {
  color: var(--color-dark) !important;
}

.bg-secondary {
  background: var(--color-primary);
  color: white;
}

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

.text-white {
  color: white !important;
}

.mb-24 {
  margin-bottom: 1.5rem;
}

.mb-32 {
  margin-bottom: 2rem;
}

/* ── Typography Premium ────────────────────────────────────────────────── */
h1,
h2,
h3 {
  line-height: 1.15;
  font-weight: 700;
  color: white; /* Force white for blue background */
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 4rem;
  position: relative;
}

.highlight {
  color: var(--color-cta);
  background: linear-gradient(120deg, #FFFFFF 0%, var(--color-cta) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  /* Multi-tone shadow for legibility on complex backgrounds */
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* ── Components ────────────────────────────────────────────────────────── */

/* Navbar */
.navbar {
  position: fixed;
  z-index: 999;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem 0;
  background: var(--color-deep);
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  padding: 1rem 0;
  background: rgba(0, 74, 153, 0.95);
  z-index: 999;
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo img {
  height: 3.125rem;
  /* 50px */
  width: auto;
  transition: transform 0.3s ease;
}

.logo:hover img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  text-decoration: none;
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  transition: var(--transition);
  position: relative;
  display: block;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-cta);
  transition: var(--transition);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 1.25rem;
}

.nav-links a:hover {
  color: var(--color-cta);
  background: rgba(255, 255, 255, 0.1);
}

.nav-links a.active {
  color: var(--color-cta);
  background: rgba(0, 229, 255, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-btn);
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-cta);
  color: var(--color-dark);
  box-shadow: 0 0.625rem 1.25rem -0.3125rem rgba(0, 229, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  filter: brightness(1.1);
  box-shadow: 0 1rem 1.875rem -0.3125rem rgba(0, 229, 255, 0.6);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  background: white;
  color: var(--color-deep);
  border-color: white;
}

.btn-donate {
  background: linear-gradient(135deg, var(--color-cta) 0%, #00d4ff 100%);
  color: var(--color-dark) !important;
  font-weight: 800;
  border: none;
  padding: 0.7rem 1.75rem !important;
  box-shadow: 0 0 1.25rem rgba(0, 229, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-donate:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 0 1.875rem rgba(0, 229, 255, 0.7);
  filter: brightness(1.1);
}

.btn-donate i {
  margin-right: 0.5rem;
  font-size: 0.9em;
}

/* Cards */
.card {
  background: var(--color-white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
  border: 1px solid #f1f5f9;
}

.card:hover {
  transform: translateY(-0.625rem);
  box-shadow: var(--shadow-premium);
}

.card.on-dark {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-color: var(--glass-border);
  color: white;
}

.card.on-dark:hover {
  background: var(--glass-bg-hover);
}

.card.on-dark h3 {
  color: var(--color-cta);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.card.on-dark p {
  opacity: 0.95;
  /* Better legibility */
}

.card-compact {
  padding: 1.5rem;
}

.accent-left {
  border-left: 0.375rem solid var(--color-cta);
}

.divider {
  margin: 1.5rem 0;
  opacity: 0.15;
  border: none;
  border-top: 1px solid currentColor;
}

/* ── Section Grids ─────────────────────────────────────────────────────── */

/* Hero */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8.75rem;
  /* 140px */
  color: white;
}

.grid-hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  font-size: 1.35rem;
  /* Increased */
  margin-bottom: 2.5rem;
  opacity: 0.95;
  max-width: var(--max-content-width);
}

.hero-btns {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.img-shadow {
  box-shadow: 0 3.125rem 6.25rem -1.25rem rgba(0, 0, 0, 0.5);
}

.img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  filter: brightness(0.95);
}

/* Impact */
.grid-impact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  gap: 3rem;
  text-align: center;
}

.impact-number {
  font-size: 4.5rem;
  color: var(--color-cta) !important;
  margin-bottom: 0.5rem;
  font-weight: 800;
}

.impact-label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  opacity: 0.9;
  color: white;
}

/* Purpose */
.grid-purpose {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.lead-text {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: var(--max-content-width);
}

.info-box {
  background: var(--color-light);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  border-left: 0.3125rem solid var(--color-primary);
  color: var(--color-dark);
}

.info-box-title {
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.info-list {
  list-style: none;
}

.info-list li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #1e293b;
}

.info-list li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 900;
  font-size: 1.2rem;
}

/* Ejes & Videos Grid */
.grid-cards,
.grid-videos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 3rem;
}

.grid-videos {
  gap: 2rem;
}

.loader-text {
  grid-column: 1/-1;
  opacity: 0.7;
}

/* Recognition */
.grid-recognition {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}

/* Contact */
.grid-contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  color: white;
}

.contact-details {
  font-size: 1.2rem;
  color: white;
}

.social-links {
  display: flex;
  gap: 1.75rem;
  margin-top: 2rem;
}

.social-links a {
  font-size: 1.75rem;
  color: white;
  transition: var(--transition);
  padding: 0.5rem;
  margin: -0.5rem;
}

.social-links a:hover {
  color: var(--color-primary);
  transform: translateY(-0.1875rem);
}

.contact-form {
  display: grid;
  gap: 1.5rem;
}

.form-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: white;
}

.form-input {
  width: 100%;
  padding: 1rem;
  border: 2px solid #cbd5e1;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: white;
}

.btn-full {
  width: 100%;
  justify-content: center;
  padding: 1.25rem;
  font-size: 1.1rem;
}

/* Footer */
.footer-bg {
  background: var(--color-dark);
  padding: 5rem 0;
  color: white;
  border-top: 1px solid var(--glass-border);
}

.footer-copy {
  opacity: 0.75;
  font-size: 1rem;
}

/* ── Animations ────────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    transition: opacity 0.4s ease;
    transform: none;
  }
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ── Hamburger Menu ─────────────────────────────────────────────────────── */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 2000;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  border: 1px solid var(--glass-border);
}

.menu-toggle span {
  width: 1.75rem;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ── Mobile & Tablet Responsiveness ───────────────────────────────────── */
@media (max-width: 64rem) {
  /* 1024px */

  .grid-hero,
  .grid-purpose,
  .grid-recognition,
  .grid-contact {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .img-wrap {
    order: -1;
  }

  .hero-section {
    text-align: center;
    padding-top: 6.25rem;
  }

  .hero-btns {
    justify-content: center;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(0, 51, 102, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    transition: var(--transition);
    z-index: 1500;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.5rem;
  }

  .menu-toggle {
    display: flex;
  }
}

@media (max-width: 48rem) {

  /* 768px */
  .section {
    padding: 5rem 0;
  }

  .container {
    padding: 0 1.5rem;
  }

  h1 {
    font-size: 3rem;
  }
}

.video-info-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 51, 102, 0.95) 0%, transparent 100%);
  color: white;
  pointer-events: none;
}

.video-info-overlay h4 {
  font-size: 1.1rem;
  margin-bottom: 0;
  line-height: 1.4;
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
}