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

:root {
  --primary:       #177bdb;
  --primary-dark:  #1e5fd9;
  --primary-light: #4a9ef2;
  --secondary:     #0f172a;
  --accent:        #06a3bf;
  --purple:        #b870fb;
  --text:          #1e293b;
  --text-light:    #64748b;
  --bg:            #ffffff;
  --bg-light:      #f8fafc;
  --bg-mid:        #f1f5f9;
  --border:        #e2e8f0;
  --border-strong: #cbd5e1;
  --gradient:      linear-gradient(135deg,
                     #0d5ba8 0%, #177bdb 10%, #2b8de8 20%,
                     #4a9ef2 30%, #5fa8f5 40%, #7a8ff8 50%,
                     #9178f9 60%, #a96bfa 70%, #b870fb 80%,
                     #d45fb8 90%, #e91e8c 100%);
  --gradient-soft: linear-gradient(135deg,
                     rgba(13,91,168,0.08) 0%, rgba(232,30,140,0.08) 100%);
  --shadow-sm:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:     0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:     0 12px 40px rgba(0,0,0,.14);
  --shadow-glow:   0 8px 32px rgba(23,123,219,.25);
  --radius-sm:     8px;
  --radius-md:     14px;
  --radius-lg:     20px;
  --radius-full:   9999px;
  --transition:    0.3s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --secondary:     #f1f5f9;
  --text:          #e2e8f0;
  --text-light:    #94a3b8;
  --bg:            #0b1120;
  --bg-light:      #131e33;
  --bg-mid:        #1a2742;
  --border:        #1e3050;
  --border-strong: #2a3f60;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.4);
  --shadow-md:     0 4px 16px rgba(0,0,0,.35);
  --shadow-lg:     0 12px 40px rgba(0,0,0,.5);
  --shadow-glow:   0 8px 32px rgba(23,123,219,.4);
}

/* =========================================================
   BASE
========================================================= */
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

img { display: block; max-width: 100%; }
a   { color: inherit; }

/* =========================================================
   SCROLL-REVEAL — driven by JS via CSS custom properties
========================================================= */
section:not(#inicio) {
  opacity: var(--s-opacity, 0);
  transform: translateY(var(--s-y, 40px));
  will-change: transform, opacity;
}

/* =========================================================
   TYPOGRAPHY HELPERS
========================================================= */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* =========================================================
   NAVBAR
========================================================= */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

nav.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] nav {
  background: rgba(11,17,32,0.85);
}
[data-theme="dark"] nav.scrolled {
  background: rgba(11,17,32,0.97);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  user-select: none;
  -webkit-user-drag: none;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(23,123,219,0.07);
}

/* Dark-mode toggle */
.theme-toggle {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-strong);
  background: var(--bg-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.theme-toggle:hover {
  border-color: var(--primary);
  transform: scale(1.08);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: opacity .3s, transform .3s;
  color: var(--text);
}

.sun-icon  { opacity: 1;  transform: rotate(0deg)   scale(1); }
.moon-icon { opacity: 0;  transform: rotate(180deg) scale(0); }

[data-theme="dark"] .sun-icon  { opacity: 0;  transform: rotate(-180deg) scale(0); }
[data-theme="dark"] .moon-icon { opacity: 1;  transform: rotate(0deg)    scale(1); }

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =========================================================
   BUTTONS
========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(23,123,219,.35);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.6);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: white;
  color: var(--primary);
  border-color: white;
  transform: translateY(-2px);
}

/* =========================================================
   SECTIONS — shared
========================================================= */
section { padding: 5rem 1.5rem; }

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--secondary);
  margin-bottom: 0.6rem;
  line-height: 1.2;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
}

/* Pill label above headings */
.section-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(23,123,219,0.1);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
  border: 1px solid rgba(23,123,219,0.2);
}

/* =========================================================
   HERO
========================================================= */
.hero {
  margin-top: 72px;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  background: var(--gradient);
  color: white;
  position: relative;
  overflow: hidden;
}

/* Animated mesh blobs */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: blobFloat 8s ease-in-out infinite alternate;
}

.hero::before {
  width: 500px; height: 500px;
  background: rgba(255,255,255,0.18);
  top: -120px; right: -80px;
}

.hero::after {
  width: 350px; height: 350px;
  background: rgba(255,255,255,0.12);
  bottom: -80px; left: -60px;
  animation-delay: -4s;
}

@keyframes blobFloat {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(40px,30px) scale(1.15); }
}

/* Grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Eyebrow */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}

.hero-eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #7dffa0;
  box-shadow: 0 0 6px #7dffa0;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(1.4); }
}

.hero-text h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-text h1 span {
  margin-top: 1rem;
  display: block;
  opacity: 0.9;
  font-weight: 500;
  font-size: 0.5em;
  letter-spacing: -0.01em;
}

.hero-text > p {
  font-size: 1.15rem;
  line-height: 1.75;
  opacity: 0.9;
  margin-bottom: 2.25rem;
  max-width: 480px;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.cta-buttons .btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.cta-buttons .btn-primary:hover {
  background: white;
  color: var(--primary-dark);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

/* Hero image / profile */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-outer {
  position: relative;
  width: 340px;
  height: 340px;
}

/* Rotating ring */
.profile-ring {
  position: absolute;
  inset: -16px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,0.35);
  animation: spin 18s linear infinite;
}

.profile-ring::before {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: white;
  top: 50%; right: -6px;
  transform: translateY(-50%);
  box-shadow: 0 0 12px rgba(255,255,255,0.6);
}

@keyframes spin { to { transform: rotate(360deg); } }

.profile-container {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: white;
  overflow: hidden;
  border: 6px solid rgba(255,255,255,0.3);
  box-shadow: 0 24px 64px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.1);
  position: relative;
  z-index: 1;
  transition: transform 0.9s ease-in-out;
}

.profile-container:hover { transform: rotate(360deg); }

.profile-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

/* Floating chips */
.hero-chip {
  position: absolute;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  animation: chipFloat 3s ease-in-out infinite alternate;
}

.hero-chip:nth-child(2) { top: 10%; right: -5%; animation-delay: 0s; }
.hero-chip:nth-child(3) { bottom: 14%; left: -8%; animation-delay: -1.5s; }

@keyframes chipFloat {
  from { transform: translateY(0); }
  to   { transform: translateY(-8px); }
}

/* =========================================================
   SOBRE MÍ
========================================================= */
#sobre {
  background: var(--bg);
  position: relative;
}

#sobre::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient);
}

.about-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  align-items: flex-start;
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* Social icon row */
.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.social-links a {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  background: var(--gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.social-links a:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: var(--shadow-glow);
}

/* Stat cards */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--bg-light);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.stat-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.stat-card h3 {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
  line-height: 1;
}

.stat-card p {
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.9rem;
}

/* =========================================================
   CLIENTES
========================================================= */
#clientes {
  background: var(--bg-mid);
  overflow: hidden;
  padding: 4rem 0;
}

#clientes .section-header { padding: 0 1.5rem; }

.clients-carousel-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 1.5rem 0;
  mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
}

.clients-carousel {
  display: flex;
  gap: 2rem;
  animation: scroll-smooth 22s linear infinite;
  width: fit-content;
}

.clients-carousel:hover { animation-play-state: paused; }

@keyframes scroll-smooth {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.client-slide {
  flex-shrink: 0;
  width: 190px;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.client-slide:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.client-slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.55;
  transition: all var(--transition);
}

.client-slide:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

.client-spacer {
  flex-shrink: 0;
  width: 190px;
  height: 110px;
  opacity: 0;
  pointer-events: none;
}

[data-theme="dark"] .client-slide {
  background: var(--bg-light);
  border-color: var(--border);
}

[data-theme="dark"] .client-slide img { filter: grayscale(100%) brightness(0.8); }
[data-theme="dark"] .client-slide:hover img { filter: grayscale(0%) brightness(1); }

/* =========================================================
   SKILLS
========================================================= */
#skills { background: var(--bg); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg-light);
  padding: 2.25rem 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.skill-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.skill-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  background: var(--bg);
}

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

.skill-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 1.1rem;
  background: var(--bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}

.skill-card:hover .skill-icon {
  background: rgba(23,123,219,0.08);
}

.skill-icon img { filter: drop-shadow(0 2px 6px rgba(0,0,0,0.1)); }

.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  position: relative;
  z-index: 1;
  transition: color var(--transition);
}

.skill-card:hover h3 { color: var(--primary); }

[data-theme="dark"] .skill-card { background: var(--bg-light); border-color: var(--border); }

/* =========================================================
   SERVICIOS — Tabs + Acordeones
========================================================= */
#servicios { background: var(--bg-mid); }

.services-tabs {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.7rem 1.6rem;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  color: var(--text-light);
}

.tab-btn.active {
  background: var(--primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.tab-btn:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(23,123,219,0.06);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Pricing grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

/* Top accent bar */
.pricing-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.pricing-card:hover::before { opacity: 1; }

/* Space compensation so cards without badge align */
.pricing-card > h3:first-child::before {
  content: '';
  display: block;
  height: 5px;
  margin-bottom: 0.3rem;
}
.pricing-card.featured > .badge + h3::before { content: none; }

.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(160deg, var(--bg) 0%, rgba(23,123,219,0.04) 100%);
}
.pricing-card.featured::before { opacity: 1; }

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--gradient);
  color: white;
  margin-bottom: 0.75rem;
  align-self: center;
}

.pricing-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--secondary);
  margin-bottom: 0.35rem;
  text-align: center;
}

.pricing-card .subtitle {
  color: var(--text-light);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.4;
}

.price {
  font-size: 1.2rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
  letter-spacing: -0.03em;
  text-align: center;
}

.price-period {
  color: var(--text-light);
  font-size: 0.82rem;
  display: block;
  min-height: 1.2rem;
  margin-bottom: 1.25rem;
}

/* Accordion toggle button */
.features-toggle {
  width: 100%;
  padding: 0.7rem 1rem;
  margin-top: auto;
  margin-bottom: 0.85rem;
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text);
  transition: all var(--transition);
  flex-shrink: 0;
}

.features-toggle:hover {
  border-color: var(--primary);
  background: rgba(23,123,219,0.06);
  color: var(--primary);
}

.features-toggle.active {
  background: rgba(23,123,219,0.1);
  border-color: var(--primary);
  color: var(--primary);
}

.accordion-icon {
  transition: transform var(--transition);
  stroke: currentColor;
  flex-shrink: 0;
}

.features-toggle.active .accordion-icon { transform: rotate(180deg); }

.features-wrapper {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  flex-shrink: 0;
}

.features-wrapper.active {
  max-height: 1000px;
  transition: max-height 0.5s ease;
}

.features {
  list-style: none;
  margin-bottom: 1rem;
  text-align: left;
}

.features li {
  padding: 0.35rem 0;
  font-size: 0.88rem;
  color: var(--text-light);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.4;
}

.features li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.pricing-card .btn-primary { margin-top: 0; justify-content: center; }

[data-theme="dark"] .pricing-card       { background: var(--bg-light); }
[data-theme="dark"] .pricing-card.featured { background: linear-gradient(160deg, var(--bg-light) 0%, rgba(23,123,219,0.06) 100%); }
[data-theme="dark"] .tab-btn            { background: var(--bg-light); color: var(--text); }
[data-theme="dark"] .features-toggle   { background: var(--bg); color: var(--text); }

/* =========================================================
   PROYECTOS
========================================================= */
#proyectos { background: var(--bg); }

.project-filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.65rem 1.5rem;
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-light);
  transition: all var(--transition);
}

.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.filter-btn:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
  z-index: 1;
}

.project-card.hidden { display: none; }

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

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

.project-image {
  width: 100%;
  height: 210px;
  background: var(--bg-mid);
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  opacity: 0.85;
  transition: opacity var(--transition), transform var(--transition);
  display: block;
}

.project-card:hover .project-image img {
  opacity: 1;
  transform: scale(1.04);
}

.project-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.difficulty-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.85rem;
  align-self: flex-start;
}

.difficulty-badge.basico    { background: linear-gradient(135deg,#10b981,#059669); color:white; }
.difficulty-badge.intermedio{ background: linear-gradient(135deg,#f59e0b,#d97706); color:white; }
.difficulty-badge.avanzado  { background: linear-gradient(135deg,#ef4444,#dc2626); color:white; }

.project-content h3 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--secondary);
  margin-bottom: 0.35rem;
}

.project-content .tech {
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.project-content > p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.65;
  flex-grow: 1;
}

.project-links {
  display: flex;
  gap: 0.75rem;
  padding-top: 1.25rem;
  margin-top: auto;
}

.project-links a {
  flex: 1;
  padding: 0.65rem;
  text-align: center;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.repo-link {
  background: var(--bg);
  color: var(--text);
  border: 1.5px solid var(--border);
}

.repo-link:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.demo-link {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 8px rgba(23,123,219,0.25);
}

.demo-link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

[data-theme="dark"] .project-card   { background: var(--bg-light); }
[data-theme="dark"] .project-image  { opacity: 0.85; background: var(--bg); }
[data-theme="dark"] .repo-link      { background: var(--bg); }
[data-theme="dark"] .filter-btn     { background: var(--bg-light); }

/* =========================================================
   CONTACTO
========================================================= */
#contacto {
  background: var(--bg-mid);
  position: relative;
}

#contacto::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--secondary);
  margin-bottom: 0.9rem;
  line-height: 1.2;
}

.contact-info > p {
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}

.contact-method:hover {
  border-color: var(--primary);
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

.contact-method-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-full);
  background: var(--gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method-icon svg { width: 22px; height: 22px; }

.contact-method strong {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 0.15rem;
}

.contact-method p, .contact-method a {
  font-size: 0.9rem;
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-method a:hover { color: var(--primary); text-decoration: underline; }

/* Contact form */
.contact-form {
  background: var(--bg);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-light);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(23,123,219,0.12);
  background: var(--bg);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-light); }

/* Alert messages */
.mensaje-alerta {
  padding: 0.9rem 1.2rem;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  animation: slideDown 0.2s ease;
  transition: opacity 0.3s;
}

.mensaje-alerta.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.mensaje-alerta.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

[data-theme="dark"] .hero {background: var(--bg-mid);}
[data-theme="dark"] .contact-form          { background: var(--bg-light); }
[data-theme="dark"] .contact-method       { background: var(--bg); }
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea  { background: var(--bg); color: var(--text); border-color: var(--border); }

/* =========================================================
   FOOTER
========================================================= */
footer {
  background: var(--secondary);
  color: white;
  padding: 3rem 1.5rem 1.75rem;
}

[data-theme="dark"] footer { background: #060c17; }

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.5rem;
}

.footer-logo {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
  user-select: none;
}

.footer-info p {
  opacity: 0.65;
  font-size: 0.9rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 42px; height: 42px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(255,255,255,0.12);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--gradient);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-bottom p {
  opacity: 0.5;
  font-size: 0.85rem;
}

/* =========================================================
   PROTECT LOGO
========================================================= */
.logo,
.footer-logo,
.profile-container img,
img[src*="Vector-logo.svg"] {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* =========================================================
   DISABLED BUTTON
========================================================= */
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* =========================================================
   ANIMATIONS
========================================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in-up { animation: fadeInUp 0.6s ease-out both; }

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 968px) {
  .nav-links {
    position: fixed;
    top: 72px; left: -100%;
    width: 100%;
    background: var(--bg);
    border-top: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.25rem;
    box-shadow: var(--shadow-lg);
    transition: left var(--transition);
  }

  [data-theme="dark"] .nav-links { background: var(--bg-light); }

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

  .nav-links a {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .menu-toggle { display: flex; }

  .theme-toggle { order: -1; }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-text > p { margin-left: auto; margin-right: auto; }
  .cta-buttons   { justify-content: center; }

  .profile-outer  { width: 260px; height: 260px; }
  .profile-ring   { inset: -14px; }
  .profile-container { width: 260px; height: 260px; }

  .hero-chip { display: none; }

  .about-content  { grid-template-columns: 1fr; gap: 3rem; }
  .about-stats    { grid-template-columns: repeat(2, 1fr); }
  .contact-content{ grid-template-columns: 1fr; }

  .section-header h2 { font-size: 2rem; }

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

  .contact-info h3, .contact-info p { text-align: center; }
  .social-links { justify-content: center; }

  .footer-content { flex-direction: column; text-align: center; gap: 1.5rem; }
  .footer-social  { justify-content: center; }
}

@media (max-width: 640px) {
  section { padding: 4rem 1rem; }

  .hero-text h1 { font-size: 2rem; }
  .hero-text > p { font-size: 1rem; }

  .cta-buttons { flex-direction: column; }

  .filter-btn { width: 100%; }

  .pricing-grid   { grid-template-columns: 1fr; }
  .services-tabs  { flex-direction: column; }
  .tab-btn        { width: 100%; text-align: center; }

  .client-slide, .client-spacer { width: 150px; height: 90px; }
  .client-slide { padding: 1rem; }
  .clients-carousel { gap: 1.25rem; animation-duration: 28s; }

  .contact-form  { padding: 1.25rem; }
  .contact-method{ padding: 1rem; }
  .contact-method:hover { transform: none; }

  .pricing-card  { padding: 1.5rem 1.25rem; }
  .project-content { padding: 1.5rem; }
  .stat-card     { padding: 1.5rem 1rem; }

  /* Proyectos: imagen más compacta en móvil */
  .projects-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .project-image { height: 180px; }
}

@media (max-width: 390px) {
  .contact-method-icon { width: 40px; height: 40px; }
  .contact-method-icon svg { width: 18px; height: 18px; }

}