/* ============================================================
   DESIGN TOKENS
============================================================ */
:root {
  /* Backgrounds */
  --bg-base:       #060612;
  --bg-surface:    #0D0D1F;
  --bg-elevated:   #131328;
  --bg-border:     rgba(255, 255, 255, 0.07);

  /* Brand Accents */
  --accent-electric: #00D4FF;
  --accent-violet:   #7B2FFF;
  --accent-magenta:  #FF2D8B;
  --accent-green:    #00FF94;

  /* Gradients */
  --grad-hero:  linear-gradient(135deg, #00D4FF 0%, #7B2FFF 50%, #FF2D8B 100%);
  --grad-text:  linear-gradient(90deg, #00D4FF 0%, #7B2FFF 60%, #FF2D8B 100%);
  --grad-card:  linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(123,47,255,0.04) 100%);
  --grad-glow:  radial-gradient(ellipse at center, rgba(0,212,255,0.12) 0%, transparent 65%);

  /* Text */
  --text-primary:   #F0F4FF;
  --text-secondary: #8892B0;
  --text-muted:     #4A5568;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Font Sizes */
  --fs-hero: clamp(3.2rem, 8.5vw, 7.5rem);
  --fs-h1:   clamp(2.5rem, 5vw, 4.5rem);
  --fs-h2:   clamp(2rem, 3.5vw, 3rem);
  --fs-h3:   clamp(1.25rem, 2vw, 1.6rem);
  --fs-xl:   1.25rem;
  --fs-base: 1rem;
  --fs-sm:   0.875rem;
  --fs-xs:   0.75rem;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 7rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1rem, 5vw, 2rem);

  /* Borders & Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --border:    1px solid var(--bg-border);

  /* Transitions */
  --transition:      250ms ease;
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-card:  0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:  0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-glow-v: 0 0 40px rgba(123, 47, 255, 0.2);
}

/* ============================================================
   RESET & BASE
============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   LAYOUT
============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--space-2xl) 0;
  position: relative;
}

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

/* ============================================================
   TYPOGRAPHY
============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.gradient-text {
  font-style: italic;
  background: var(--grad-text);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s linear infinite;
}

@keyframes gradientShift {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ============================================================
   SECTION HEADER
============================================================ */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-electric);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 100px;
  padding: 0.3em 0.9em;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--fs-h2);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: var(--fs-xl);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   BUTTONS
============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-sm);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-hero);
  color: #fff;
  padding: 0.75em 1.5em;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
  background-size: 200% auto;
  background-position: left center;
}

.btn-primary:hover {
  background-position: right center;
  box-shadow: 0 6px 30px rgba(0, 212, 255, 0.4);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.75em 1.5em;
  border: var(--border);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
}

.btn-sm  { padding: 0.55em 1.1em; font-size: var(--fs-xs); }
.btn-lg  { padding: 1em 2em; font-size: var(--fs-base); }
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   HEADER
============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--transition-slow), backdrop-filter var(--transition-slow), box-shadow var(--transition-slow);
  padding: 1.25rem 0;
}

.header.scrolled {
  background: rgba(6, 6, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--bg-border);
  padding: 0.85rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--grad-hero);
  background-size: 200%;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  animation: gradientShift 4s linear infinite;
  flex-shrink: 0;
}

.logo-text { color: var(--text-primary); }

/* Nav */
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-link {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-electric);
  transition: width var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after { width: 100%; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Hamburger */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--transition);
  transform-origin: center;
}

.mobile-menu-btn.open .hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.mobile-menu-btn.open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.mobile-menu-btn.open .hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================================
   HERO
============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 0 5rem;
}

/* Background */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
  top: -10%;
  right: -5%;
  animation: floatOrb1 12s ease-in-out infinite;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(123, 47, 255, 0.4) 0%, transparent 70%);
  bottom: 5%;
  left: -10%;
  animation: floatOrb2 15s ease-in-out infinite;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(255, 45, 139, 0.25) 0%, transparent 70%);
  top: 40%;
  left: 40%;
  animation: floatOrb3 10s ease-in-out infinite;
}

@keyframes floatOrb1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(-40px, 40px) scale(1.05); }
  66%       { transform: translate(30px, -20px) scale(0.95); }
}

@keyframes floatOrb2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  40%       { transform: translate(50px, -30px) scale(1.08); }
  70%       { transform: translate(-20px, 40px) scale(0.97); }
}

@keyframes floatOrb3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%       { transform: translate(-30px, -40px) scale(1.1); }
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

.hero-h1 {
  font-size: var(--fs-hero);
  line-height: 1.0;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}

.hero-sub strong { color: var(--text-primary); }

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.hero-stats {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.stat-chip {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  text-align: center;
  min-width: 150px;
  transition: all var(--transition);
}

.stat-chip:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.stat-chip--alert  { border-color: rgba(255, 45, 139, 0.3); }
.stat-chip--positive { border-color: rgba(0, 255, 148, 0.3); }
.stat-chip--highlight { border-color: rgba(0, 212, 255, 0.3); }

.stat-chip-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-chip--alert   .stat-chip-num { color: var(--accent-magenta); }
.stat-chip--positive .stat-chip-num { color: var(--accent-green); }
.stat-chip--highlight .stat-chip-num { color: var(--accent-electric); }

.stat-chip-label {
  display: block;
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.3;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  animation: fadeInUp 1.5s 1.5s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-electric), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%       { opacity: 0.4; transform: scaleY(0.6); }
}

/* ============================================================
   ENTRANCE ANIMATIONS
============================================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: var(--delay, 0s);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Scroll reveal */
.reveal, .reveal-stagger {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible, .reveal-stagger.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger:nth-child(1).visible { transition-delay: 0.0s; }
.reveal-stagger:nth-child(2).visible { transition-delay: 0.1s; }
.reveal-stagger:nth-child(3).visible { transition-delay: 0.2s; }
.reveal-stagger:nth-child(4).visible { transition-delay: 0.3s; }
.reveal-stagger:nth-child(5).visible { transition-delay: 0.4s; }
.reveal-stagger:nth-child(6).visible { transition-delay: 0.5s; }

/* ============================================================
   EL PROBLEMA
============================================================ */
.problema-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
}

/* Gap Chart */
.gap-chart {
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.gap-bar-wrapper {
  margin-bottom: var(--space-md);
}

.gap-bar-wrapper:last-of-type { margin-bottom: 0; }

.gap-label {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.gap-label strong { color: var(--text-primary); }

.gap-bar-track {
  background: rgba(255,255,255,0.05);
  border-radius: 100px;
  height: 42px;
  position: relative;
  overflow: hidden;
}

.gap-bar {
  height: 100%;
  border-radius: 100px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  width: var(--bar-width, 0%);
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.gap-bar--high {
  background: linear-gradient(90deg, rgba(0,212,255,0.8) 0%, rgba(0,212,255,0.4) 100%);
}

.gap-bar--low {
  background: linear-gradient(90deg, rgba(255,45,139,0.9) 0%, rgba(255,45,139,0.5) 100%);
}

.gap-bar-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  white-space: nowrap;
}

.gap-source {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
}

/* Problem Stats */
.problema-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.p-stat {
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border-left: 3px solid var(--accent-magenta);
  transition: all var(--transition);
}

.p-stat:hover {
  border-color: var(--accent-magenta);
  box-shadow: -4px 0 20px rgba(255, 45, 139, 0.1);
}

.p-stat-num {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-magenta);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.p-stat-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.3rem;
}

.p-stat-source {
  font-size: var(--fs-xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* Quote */
.problema-quote {
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  border-top: 2px solid var(--accent-electric);
  position: relative;
}

.problema-quote::before {
  content: '"';
  position: absolute;
  top: -0.5rem;
  left: 2rem;
  font-size: 5rem;
  color: var(--accent-electric);
  font-family: var(--font-display);
  line-height: 1;
  opacity: 0.4;
}

.problema-quote p {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.problema-quote p strong { color: var(--text-primary); }

.problema-quote cite {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--accent-electric);
}

/* ============================================================
   TESIS
============================================================ */
.tesis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.tesis-card {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  transition: all var(--transition-slow);
}

.tesis-card--crossed {
  opacity: 0.65;
}

.tesis-card--crossed:hover {
  opacity: 0.8;
}

.tesis-card--highlight {
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(123,47,255,0.06) 100%);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-glow);
}

.tesis-card-icon {
  width: 56px;
  height: 56px;
  border: var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.tesis-card--highlight .tesis-card-icon {
  border-color: rgba(0,212,255,0.4);
  color: var(--accent-electric);
}

.tesis-card-cross {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  font-size: 1.2rem;
  color: var(--accent-magenta);
  opacity: 0.7;
}

.tesis-card-check {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  font-size: 1.2rem;
  color: var(--accent-electric);
}

.tesis-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.tesis-card p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.tesis-card p strong { color: var(--text-primary); }

.tesis-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
  padding: 0.25em 0.8em;
}

.tesis-badge--no {
  background: rgba(255,45,139,0.1);
  color: var(--accent-magenta);
  border: 1px solid rgba(255,45,139,0.3);
}

.tesis-badge--yes {
  background: rgba(0,212,255,0.1);
  color: var(--accent-electric);
  border: 1px solid rgba(0,212,255,0.3);
}

/* Tesis Data Row */
.tesis-data {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg) var(--space-xl);
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.tesis-data-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.3rem;
  flex: 1;
  min-width: 140px;
}

.tesis-data-num {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-violet);
  line-height: 1;
}

.tesis-data-label {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.4;
  max-width: 160px;
}

.tesis-data-divider {
  width: 1px;
  height: 60px;
  background: var(--bg-border);
  flex-shrink: 0;
}

/* ============================================================
   CHARLAS
============================================================ */
.charlas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.charla-card {
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.charla-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-hero);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.charla-card:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-4px);
}

.charla-card:hover::before {
  transform: scaleX(1);
}

.charla-card--featured {
  background: linear-gradient(135deg, rgba(0,212,255,0.06) 0%, rgba(123,47,255,0.05) 100%);
  border-color: rgba(0, 212, 255, 0.2);
}

.charla-card-num {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.charla-card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--accent-electric);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 100px;
  padding: 0.2em 0.7em;
  align-self: flex-start;
}

.charla-card-title {
  font-size: var(--fs-h3);
  color: var(--text-primary);
  line-height: 1.25;
  flex-grow: 0;
}

.charla-card-desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.65;
  flex-grow: 1;
}

.charla-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  border-top: var(--border);
  margin-top: auto;
}

.charla-duration {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.charla-cta {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent-electric);
  transition: all var(--transition);
}

.charla-cta:hover {
  color: #fff;
  letter-spacing: 0.02em;
}

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

.charlas-cta p {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* ============================================================
   SERVICIOS
============================================================ */
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.servicio-card {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-slow);
  position: relative;
}

.servicio-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.servicio-card--featured {
  background: linear-gradient(135deg, rgba(123,47,255,0.08) 0%, rgba(0,212,255,0.04) 100%);
  border-color: rgba(123, 47, 255, 0.3);
}

.servicio-card--featured:hover {
  box-shadow: var(--shadow-glow-v);
}

.servicio-icon {
  width: 52px;
  height: 52px;
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-electric);
  margin-bottom: var(--space-md);
}

.servicio-card--featured .servicio-icon {
  border-color: rgba(123, 47, 255, 0.4);
  color: var(--accent-violet);
}

.servicio-featured-badge {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  background: rgba(123,47,255,0.15);
  color: var(--accent-violet);
  border: 1px solid rgba(123,47,255,0.3);
  border-radius: 100px;
  padding: 0.2em 0.7em;
}

.servicio-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.servicio-card p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.servicio-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.servicio-list li {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding-left: 1.2rem;
  position: relative;
}

.servicio-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-electric);
  font-size: 0.75rem;
  top: 0.1em;
}

/* ============================================================
   SOBRE DIEGO
============================================================ */
.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: center;
}

.sobre-media {
  position: relative;
}

.sobre-photo-frame {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: var(--bg-elevated);
  border: var(--border);
  position: relative;
}

.sobre-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.sobre-photo-placeholder {
  display: none;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-elevated) 0%, rgba(0,212,255,0.05) 100%);
}

.sobre-photo-placeholder span {
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.4;
}

.sobre-accent-line {
  position: absolute;
  bottom: -15px;
  left: -15px;
  right: 15px;
  top: 15px;
  border: 2px solid rgba(0,212,255,0.15);
  border-radius: var(--radius-xl);
  z-index: -1;
}

.sobre-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.sobre-bio p {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}

.sobre-bio p strong { color: var(--text-primary); }

.sobre-highlights {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  padding: var(--space-md) 0;
  border-top: var(--border);
  border-bottom: var(--border);
}

.sobre-highlight {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.sobre-highlight-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-electric);
  line-height: 1;
}

.sobre-highlight-label {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================
   DATOS
============================================================ */
.datos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.dato-card {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.dato-card::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.dato-card:hover::after { opacity: 1; }

.dato-card:hover { transform: translateY(-4px); }

.dato-card--alert   { border-color: rgba(255,45,139,0.2); }
.dato-card--alert:hover { box-shadow: 0 8px 30px rgba(255,45,139,0.1); }

.dato-card--positive  { border-color: rgba(0,255,148,0.2); }
.dato-card--positive:hover { box-shadow: 0 8px 30px rgba(0,255,148,0.1); }

.dato-card--neutral   { border-color: rgba(0,212,255,0.15); }
.dato-card--neutral:hover { box-shadow: var(--shadow-glow); }

.dato-num {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.dato-card--alert   .dato-num { color: var(--accent-magenta); }
.dato-card--positive .dato-num { color: var(--accent-green); }
.dato-card--neutral  .dato-num { color: var(--accent-electric); }

.dato-label {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.dato-source {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.datos-sources {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: var(--border);
}

.datos-sources-title {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.datos-sources-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem var(--space-md);
}

.datos-sources-list span {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ============================================================
   CONTACTO
============================================================ */
.section--cta {
  background: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

.contacto-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-xl);
  align-items: start;
}

.contacto-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contacto-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.contacto-option:hover {
  border-color: rgba(0,212,255,0.2);
  box-shadow: var(--shadow-glow);
}

.contacto-option-icon {
  width: 44px;
  height: 44px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-electric);
  flex-shrink: 0;
}

.contacto-option strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-base);
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.contacto-option p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Form */
.contacto-form-wrapper {
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

.contacto-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  padding: 0.75rem 1rem;
  width: 100%;
  transition: all var(--transition);
  appearance: none;
}

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

.form-input:focus {
  outline: none;
  border-color: rgba(0,212,255,0.5);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.08);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%238892B0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-textarea { resize: vertical; min-height: 100px; }

.btn-arrow { flex-shrink: 0; }

.form-success {
  background: rgba(0,255,148,0.08);
  border: 1px solid rgba(0,255,148,0.3);
  border-radius: var(--radius-md);
  color: var(--accent-green);
  padding: var(--space-sm);
  font-size: var(--fs-sm);
  text-align: center;
}

.form-error {
  background: rgba(255,45,139,0.08);
  border: 1px solid rgba(255,45,139,0.3);
  border-radius: var(--radius-md);
  color: var(--accent-magenta);
  padding: var(--space-sm);
  font-size: var(--fs-sm);
  text-align: center;
}

.form-error a { color: var(--accent-electric); text-decoration: underline; }

/* ============================================================
   HEADER SOCIAL ICONS
============================================================ */
.header-social {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.header-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.header-social-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}

@media (max-width: 768px) {
  .header-social { display: none; }
}

/* ============================================================
   CONTENIDO — Social Profiles
============================================================ */
.social-profiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.social-profile {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.social-profile::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.social-profile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.social-profile--instagram {
  border-color: rgba(225, 48, 108, 0.2);
}
.social-profile--instagram:hover {
  border-color: rgba(225, 48, 108, 0.4);
  box-shadow: 0 8px 30px rgba(225, 48, 108, 0.1);
}
.social-profile--instagram .social-profile-icon { color: #E1306C; }

.social-profile--linkedin {
  border-color: rgba(0, 119, 181, 0.2);
}
.social-profile--linkedin:hover {
  border-color: rgba(0, 119, 181, 0.4);
  box-shadow: 0 8px 30px rgba(0, 119, 181, 0.12);
}
.social-profile--linkedin .social-profile-icon { color: #0077B5; }

.social-profile--tiktok {
  border-color: rgba(0, 212, 255, 0.2);
}
.social-profile--tiktok:hover {
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: var(--shadow-glow);
}
.social-profile--tiktok .social-profile-icon { color: var(--accent-electric); }

.social-profile-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}

.social-profile:hover .social-profile-icon {
  background: rgba(255,255,255,0.05);
}

.social-profile-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  flex: 1;
  min-width: 0;
}

.social-profile-handle {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-base);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.social-profile-platform {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.social-profile-arrow {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.social-profile:hover .social-profile-arrow {
  color: var(--text-secondary);
  transform: translate(2px, -2px);
}

/* ============================================================
   CONTENIDO — Reels Section
============================================================ */
.reels-section {
  background: var(--bg-surface);
  border: var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

.reels-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.reels-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-h3);
  font-family: var(--font-display);
  color: var(--text-primary);
}

.reels-title svg { color: #E1306C; }

.reels-ver-mas {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--accent-electric);
  transition: all var(--transition);
}

.reels-ver-mas:hover {
  color: #fff;
  letter-spacing: 0.02em;
}

.reels-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  justify-items: center;
  margin-bottom: var(--space-lg);
}

/* Instagram embed wrapper */
.reel-embed-wrapper {
  width: 100%;
  max-width: 340px;
}

/* Styling for Instagram blockquote before embed.js loads */
.reel-embed-wrapper .instagram-media {
  background: var(--bg-elevated) !important;
  border: var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: none !important;
  min-width: unset !important;
  max-width: 100% !important;
  width: 100% !important;
  margin: 0 !important;
}

/* Placeholder shown before embed loads or when URL is placeholder */
.reel-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-lg);
  background: var(--bg-elevated);
  border: var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  aspect-ratio: 9/16;
  max-height: 480px;
}

.reel-placeholder-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(225, 48, 108, 0.1);
  border: 1px solid rgba(225, 48, 108, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #E1306C;
}

.reel-placeholder p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.reel-placeholder a {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--accent-electric);
}

.reel-placeholder a:hover { text-decoration: underline; }

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

/* ============================================================
   FOOTER SOCIAL
============================================================ */
.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.footer-social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  transition: color var(--transition);
}

.footer-social-link:hover { color: var(--accent-electric); }

.footer-social-link svg { flex-shrink: 0; }

/* FOOTER
============================================================ */
.footer {
  background: var(--bg-base);
  border-top: var(--border);
  padding: var(--space-xl) 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer-logo .logo-text {
  font-size: 1rem;
}

.footer-tagline {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.footer-copy {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   RESPONSIVE — TABLET (max 1024px)
============================================================ */
@media (max-width: 1024px) {
  .tesis-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
  }

  .tesis-card--crossed { opacity: 1; }

  .sobre-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }

  .sobre-photo-frame {
    max-width: 380px;
    margin: 0 auto;
    aspect-ratio: 4/4;
  }

  .datos-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .social-profiles {
    grid-template-columns: 1fr;
  }

  .reels-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (max 768px)
============================================================ */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 6, 18, 0.97);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: 200;
  }

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

  .nav-list {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }

  .nav-link {
    font-size: var(--fs-xl);
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-secondary);
  }

  .mobile-menu-btn {
    display: flex;
    z-index: 300;
    position: relative;
  }

  .header-actions .btn-primary { display: none; }

  /* Hero */
  .hero-stats {
    flex-direction: column;
    align-items: center;
  }

  .stat-chip { min-width: 100%; max-width: 280px; }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
    max-width: 320px;
    margin: 0 auto var(--space-xl);
  }

  .hero-ctas .btn { justify-content: center; white-space: normal; text-align: center; }

  /* Social profiles */
  .social-profiles {
    grid-template-columns: 1fr;
  }

  .reels-grid {
    grid-template-columns: 1fr;
    max-width: 340px;
    margin: 0 auto var(--space-lg);
  }

  .reels-section {
    padding: var(--space-lg);
  }

  /* Sections */
  .problema-grid {
    grid-template-columns: 1fr;
  }

  .charlas-grid {
    grid-template-columns: 1fr;
  }

  .servicios-grid {
    grid-template-columns: 1fr;
  }

  .contacto-grid {
    grid-template-columns: 1fr;
  }

  .tesis-data {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
  }

  .tesis-data-divider { width: 80%; height: 1px; }

  .datos-grid {
    grid-template-columns: 1fr;
  }

  .problema-quote {
    padding: var(--space-lg);
  }

  .contacto-form-wrapper {
    padding: var(--space-lg);
  }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (max 480px)
============================================================ */
@media (max-width: 480px) {
  :root {
    --space-2xl: 4rem;
    --space-xl: 2.5rem;
  }

  /* Hero overflow fixes */
  .hero-h1 {
    font-size: clamp(2rem, 9vw, 3.2rem);
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .hero-eyebrow {
    flex-wrap: wrap;
    justify-content: center;
    max-width: 100%;
    text-align: center;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  /* Reduce heavy paddings */
  .contacto-form-wrapper {
    padding: var(--space-md);
  }

  .sobre-highlights {
    gap: var(--space-md);
  }

  .footer-links {
    gap: var(--space-xs) var(--space-md);
  }

  .datos-sources-list {
    flex-direction: column;
    align-items: center;
  }

  /* Prevent any element from causing horizontal scroll */
  .section, .hero {
    overflow-x: hidden;
  }
}

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

  html { scroll-behavior: auto; }

  .reveal, .reveal-stagger, .fade-in-up {
    opacity: 1;
    transform: none;
  }
}

:focus-visible {
  outline: 2px solid var(--accent-electric);
  outline-offset: 3px;
}

/* ============================================================
   SELECTION
============================================================ */
::selection {
  background: rgba(0, 212, 255, 0.2);
  color: var(--text-primary);
}