/* ═══════════════════════════════════════════
   ALEJANDRO CRUZ — PORTFOLIO
   ═══════════════════════════════════════════ */

/* ── VARIABLES ── */
:root {
  --primary: #2563eb;
  --secondary: #10b981;
  --dark: #0b0f19;
  --surface: #111827;
  --accent: #38bdf8;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --gradient-main: linear-gradient(135deg, #2563eb, #10b981);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.4);
  --shadow-neon: 0 0 15px rgba(16, 185, 129, 0.5);
  --glass-bg: rgba(17, 24, 39, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --font: "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ── CURSOR PERSONALIZADO ── */
.cursor-dot {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 80ms ease;
  transform: translate(-50%, -50%);
}
.cursor-glow {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 2px solid rgba(37, 99, 235, 0.4);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transition:
    transform 200ms ease,
    width 300ms ease,
    height 300ms ease,
    border-color 300ms ease;
  transform: translate(-50%, -50%);
}
@media (pointer: coarse) {
  .cursor-dot,
  .cursor-glow {
    display: none;
  }
}

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 4rem);
  height: 72px;
  background: rgba(11, 15, 25, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: background var(--transition);
}
.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.accent-dot {
  color: var(--secondary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
}
.nav-links a:hover {
  color: #fff;
}
.nav-cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--primary);
  border-radius: 8px;
  color: var(--primary) !important;
  transition: all var(--transition);
}
.nav-cta:hover {
  background: var(--primary);
  color: #fff !important;
  box-shadow: var(--shadow-glow);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: calc(100vh - 72px);
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    background: var(--dark);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
  }
  .nav-links.open {
    opacity: 1;
    pointer-events: all;
  }
  .nav-links a {
    font-size: 1.25rem;
  }
}

/* ── SHARED ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 4rem);
}
.section {
  padding: 7rem 0;
  position: relative;
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.section-subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 3rem;
}
.subsection-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 3rem 0 1.5rem;
}

/* ── GLASS CARD ── */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font);
}
.btn-primary {
  background: var(--gradient-main);
  color: #fff;
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-glow);
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--glass-border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
}

/* Glow pulse */
.glow-btn.glow-pulse {
  animation: glowPulse 2.5s ease-in-out infinite;
}
@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.3);
  }
  50% {
    box-shadow:
      0 0 30px rgba(37, 99, 235, 0.6),
      0 0 60px rgba(16, 185, 129, 0.2);
  }
}

/* ══════════════════════════════════
   HERO
   ══════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 6rem 1.5rem 4rem;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(
    ellipse at center,
    black 30%,
    transparent 70%
  );
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse at 50% 0%,
      rgba(37, 99, 235, 0.15) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse at 80% 80%,
      rgba(16, 185, 129, 0.08) 0%,
      transparent 50%
    );
  animation: heroGradientShift 8s ease-in-out infinite alternate;
}
@keyframes heroGradientShift {
  0% {
    opacity: 0.7;
  }
  100% {
    opacity: 1;
  }
}
.hero-content {
  position: relative;
  max-width: 780px;
  z-index: 2;
}
.hero-tag {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}
.hero-title {
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 1.25rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-headline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text);
  font-weight: 500;
  margin-bottom: 1rem;
}
.hero-desc {
  color: var(--muted);
  font-size: 1rem;
  max-width: 620px;
  margin: 0 auto 2rem;
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.hero-micro {
  font-size: 0.85rem;
  color: var(--muted);
  font-family: "Fira Code", monospace;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: var(--gradient-main);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ══════════════════════════════════
   ABOUT
   ══════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-text p {
  color: var(--muted);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}
.about-quote blockquote {
  position: relative;
  padding: 2rem 2rem 2rem 2.5rem;
  background: var(--glass-bg);
  border-left: 3px solid var(--secondary);
  border-radius: var(--radius);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.7;
}
.quote-mark {
  position: absolute;
  top: -0.25rem;
  left: 0.75rem;
  font-size: 3.5rem;
  color: var(--secondary);
  opacity: 0.4;
  line-height: 1;
}
@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

/* ══════════════════════════════════
   STACK
   ══════════════════════════════════ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.stack-card {
  padding: 2rem;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}
.stack-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.stack-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.stack-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.stack-techs {
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.stack-desc {
  color: var(--muted);
  font-size: 0.9rem;
}
.stack-icons-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}
.stack-icons-row img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  opacity: 0.85;
  transition:
    opacity var(--transition),
    transform var(--transition);
}
.stack-icons-row img:hover {
  opacity: 1;
  transform: scale(1.15);
}
.stack-features {
  list-style: none;
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.stack-features li {
  font-size: 0.82rem;
  color: var(--muted);
  padding-left: 1.1rem;
  position: relative;
}
.stack-features li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

/* ══════════════════════════════════
   PROJECTS
   ══════════════════════════════════ */
.project-featured {
  padding: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}
.project-featured:hover {
  transform: scale(1.01);
  box-shadow: var(--shadow-neon);
}
.project-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(16, 185, 129, 0.15);
  color: var(--secondary);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.project-name {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}
.project-desc,
.project-impact {
  color: var(--muted);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}
.project-impact strong {
  color: var(--secondary);
}
.project-stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.project-stack-tags span {
  padding: 0.3rem 0.75rem;
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: "Fira Code", monospace;
}
.project-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Grid de proyectos */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.project-card {
  padding: 2rem;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-glow);
}
.project-card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #fff;
}
.project-card p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
.project-achievements {
  padding-left: 0;
}
.project-achievements li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 0.35rem;
}
.project-achievements li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

/* ══════════════════════════════════
   TIMELINE
   ══════════════════════════════════ */
.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin-top: 2rem;
}
.timeline-line {
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 0;
  background: var(--gradient-main);
  transition: height 1.2s ease;
}
.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}
.timeline-dot {
  position: absolute;
  left: -2.65rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
  border: 2px solid var(--dark);
}
.timeline-content {
  padding: 1.5rem 2rem;
}
.timeline-year {
  display: inline-block;
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 0.5rem;
}
.timeline-content h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.timeline-content p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ══════════════════════════════════
   APPROACH
   ══════════════════════════════════ */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}
.approach-item {
  text-align: center;
  padding: 2rem 1.5rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition:
    border-color var(--transition),
    transform var(--transition);
}
.approach-item:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}
.approach-icon {
  display: inline-block;
  font-size: 2rem;
  margin-bottom: 0.75rem;
}
.approach-icon.bounce {
  animation: iconBounce 3s ease-in-out infinite;
}
@keyframes iconBounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}
.approach-item p {
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

/* ══════════════════════════════════
   INSIGHTS
   ══════════════════════════════════ */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.insight-card {
  padding: 2rem;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}
.insight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.insight-tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.insight-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #fff;
}
.insight-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ══════════════════════════════════
   CONTACT
   ══════════════════════════════════ */
.section-contact {
  text-align: center;
}
.section-contact .section-title,
.section-contact .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}
.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}
.contact-link:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* ══════════════════════════════════
   FOOTER
   ══════════════════════════════════ */
.footer {
  text-align: center;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--glass-border);
  color: var(--muted);
  font-size: 0.85rem;
}
.footer strong {
  color: var(--text);
}
.footer-tagline {
  margin-top: 0.35rem;
  font-size: 0.8rem;
}

/* ══════════════════════════════════
   REVEAL ANIMATIONS
   ══════════════════════════════════ */
.reveal {
  opacity: 0;
  transition:
    opacity 600ms ease,
    transform 600ms ease,
    filter 600ms ease;
  will-change: opacity, transform, filter;
}
.reveal.fade-up {
  transform: translateY(40px);
}
.reveal.fade-right {
  transform: translateX(-40px);
  filter: blur(4px);
}
.reveal.active {
  opacity: 1;
  transform: translate(0);
  filter: blur(0);
}

/* Progressive delay via inline --delay */
.reveal {
  transition-delay: var(--delay, 0s);
}

/* ══════════════════════════════════
   RESPONSIVE TWEAKS
   ══════════════════════════════════ */
@media (max-width: 640px) {
  .section {
    padding: 4.5rem 0;
  }
  .hero {
    padding-top: 5rem;
  }
  .stack-grid {
    grid-template-columns: 1fr;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
  .contact-links {
    flex-direction: column;
    align-items: center;
  }
  .approach-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

h1::after {
  height: 8px;
}

@media only screen and (max-width: 100px) {
  #intro {
    padding: 0 10px;
  }
  h1 {
    font-size: 15px;
  }
  h1::after {
    height: 6px;
  }
  p {
    font-size: 18px;
  }
  .btn {
    font-size: 16px;
  }
}

@media only screen and (max-width: 100px) {
  h1 {
    font-size: 15px;
  }
  h1::after {
    height: 4px;
  }
}