/* ═══════════════════════════════════════════════════
   LOANG IA — Stylesheet
   Tema: Dark AI/Tech · Morado-Azul eléctrico
   ═══════════════════════════════════════════════════ */

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

:root {
  --bg:          #05050f;
  --bg-2:        #0a0a1a;
  --bg-3:        #0f0f24;
  --surface:     rgba(255,255,255,0.04);
  --surface-2:   rgba(255,255,255,0.08);
  --border:      rgba(255,255,255,0.08);
  --border-2:    rgba(255,255,255,0.14);

  --purple:      #7c3aed;
  --purple-light:#a855f7;
  --blue:        #2563eb;
  --blue-light:  #60a5fa;
  --cyan:        #06b6d4;

  --grad:        linear-gradient(135deg, var(--purple) 0%, var(--blue) 100%);
  --grad-text:   linear-gradient(135deg, #a855f7 0%, #60a5fa 50%, #06b6d4 100%);

  --text:        #f8fafc;
  --text-2:      #cbd5e1;
  --text-3:      #94a3b8;
  --text-4:      #64748b;

  --radius:      12px;
  --radius-lg:   20px;
  --radius-xl:   28px;

  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.6);
  --glow:        0 0 40px rgba(124,58,237,0.25);
  --glow-blue:   0 0 40px rgba(37,99,235,0.2);

  --transition:  all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font:        'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  max-width: 100vw;
}

/* ─── CANVAS PARTÍCULAS ─── */
#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

/* ─── CONTAINER ─── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ─── REVEAL ANIMATION ─── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-2);
}
.btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-full {
  width: 100%;
}

/* ─── GRADIENT TEXT ─── */
.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── SECTION TAGS ─── */
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--purple-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ─── SECTION HEADERS ─── */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--text);
}

.section-desc {
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(5,5,15,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-loang { color: var(--text); }
.logo-ia {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  flex: 1;
}

.nav-links a {
  color: var(--text-3);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-cta { margin-left: auto; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
  padding: 120px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 24px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(38px, 5.5vw, 68px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 19px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}
.stat-label {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-2);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.orb-1 {
  width: 300px; height: 300px;
  background: rgba(124,58,237,0.2);
  top: -60px; right: -40px;
}
.orb-2 {
  width: 200px; height: 200px;
  background: rgba(37,99,235,0.15);
  bottom: -40px; left: 20px;
}

.agent-card {
  background: rgba(15,15,36,0.95);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-lg), var(--glow);
  backdrop-filter: blur(20px);
  position: relative;
  z-index: 2;
}

.agent-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.agent-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #34d399;
}

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
  animation: pulse-dot 2s infinite;
}

.agent-tag {
  font-size: 12px;
  padding: 4px 10px;
  background: rgba(124,58,237,0.2);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 100px;
  color: var(--purple-light);
  font-weight: 600;
}

.agent-messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.5;
}

.msg-in {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  align-self: flex-start;
  border-radius: 4px 12px 12px 12px;
  color: var(--text-2);
}

.msg-out {
  background: linear-gradient(135deg, rgba(124,58,237,0.3), rgba(37,99,235,0.3));
  border: 1px solid rgba(124,58,237,0.2);
  align-self: flex-end;
  border-radius: 12px 4px 12px 12px;
  color: var(--text);
}

.msg.typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
}
.msg.typing span {
  width: 6px; height: 6px;
  background: var(--purple-light);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite;
}
.msg.typing span:nth-child(2) { animation-delay: 0.2s; }
.msg.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

.agent-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
}
.metric-val {
  font-size: 20px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.metric-lbl {
  font-size: 11px;
  color: var(--text-3);
  font-weight: 500;
}

/* ─── SECTIONS ─── */
.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

/* ─── PROBLEM ─── */
.problem {
  background: linear-gradient(to bottom, var(--bg), var(--bg-2));
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.problem-card:hover {
  background: var(--surface-2);
  border-color: var(--border-2);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.problem-icon {
  font-size: 32px;
  margin-bottom: 14px;
}
.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.problem-card p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
}

.problem-cta {
  text-align: center;
}
.problem-question {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

/* ─── OPPORTUNITY ─── */
.opportunity {
  background: var(--bg-2);
}

.opportunity-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.opportunity-text h2 {
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}
.opportunity-text p {
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 20px;
  font-size: 16px;
}

.opportunity-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}
.opportunity-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
}
.check-icon {
  color: var(--purple-light);
  font-size: 12px;
  margin-top: 4px;
  flex-shrink: 0;
}

/* Tech Logos */
.tech-logos {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: 36px;
  text-align: center;
  box-shadow: var(--glow);
}
.tech-logo-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-4);
  margin-bottom: 28px;
}
.tech-logo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.tech-logo-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  min-height: 90px;
}
.tech-logo-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}
.tech-logo-card img {
  max-width: 120px;
  max-height: 40px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}
.tech-logo-fallback {
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
}
.tl-icon { font-size: 28px; }
.tech-desc {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
}

/* ─── IMPACT ─── */
.impact {
  background: linear-gradient(to bottom, var(--bg-2), var(--bg-3));
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.impact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.impact-card:hover {
  background: var(--surface-2);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.impact-card-featured {
  background: linear-gradient(135deg, rgba(124,58,237,0.15), rgba(37,99,235,0.1));
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--glow);
}

.impact-number {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  line-height: 1;
}
.impact-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.impact-desc {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.65;
}

/* ─── HOW IT WORKS ─── */
.how-it-works {
  background: var(--bg-3);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: flex-start;
}

.step-number {
  font-size: 56px;
  font-weight: 900;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  opacity: 0.5;
  text-align: right;
  padding-top: 4px;
}

.step-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.step-content:hover {
  background: var(--surface-2);
  border-color: var(--border-2);
}

.step-icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.step-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.step-content p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 20px;
}

.step-duration { margin-top: 4px; }
.duration-badge {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.25);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--purple-light);
}

.step-connector {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--purple), var(--blue));
  margin: 0 0 0 39px;
  opacity: 0.4;
}

/* ─── USE CASES ─── */
.use-cases {
  background: linear-gradient(to bottom, var(--bg-3), var(--bg-2));
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.use-case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
}
.use-case-card:hover {
  background: var(--surface-2);
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow), var(--glow);
}

.uc-icon {
  font-size: 36px;
  flex-shrink: 0;
  line-height: 1;
}
.uc-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.uc-content p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.65;
  margin-bottom: 14px;
}
.uc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.uc-tags span {
  padding: 3px 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
}
.uc-impact {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 500;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.uc-impact-val {
  font-size: 17px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.use-case-card-cta {
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(37,99,235,0.08));
  border-color: rgba(124,58,237,0.25);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
}
.use-case-card-cta:hover {
  background: linear-gradient(135deg, rgba(124,58,237,0.2), rgba(37,99,235,0.15));
}

.uc-cta-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.uc-cta-icon { font-size: 40px; }
.uc-cta-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.uc-cta-content p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: 4px;
}

/* ─── PRICING ─── */
.pricing {
  background: var(--bg-2);
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: 56px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
  box-shadow: var(--shadow-lg), var(--glow);
}

.pricing-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-amount {
  font-size: 36px;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.2;
}
.pricing-amount span {
  display: block;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-3);
  margin-top: 4px;
}

.pricing-desc {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 28px;
}

.pricing-includes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 36px;
}
.pricing-includes li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-2);
}
.check {
  color: #34d399;
  font-size: 16px;
  font-weight: 700;
}

/* ROI example */
.pricing-example {
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.pe-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-4);
  margin-bottom: 20px;
}
.pe-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-3);
}
.pe-row:last-of-type { border-bottom: none; }
.pe-val {
  font-weight: 700;
  color: var(--text);
}
.pe-divider {
  height: 2px;
  background: var(--border-2);
  margin: 8px 0;
}
.pe-row-total {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  padding: 14px 0 0;
  border-bottom: none;
}
.pe-val-total {
  font-size: 22px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pe-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-4);
  line-height: 1.5;
}

/* ─── ABOUT ─── */
.about {
  background: linear-gradient(to bottom, var(--bg-2), var(--bg-3));
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}
.about-text p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 18px;
}

.about-stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.as-value {
  font-size: 28px;
  font-weight: 900;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.as-label {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 500;
}

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--transition);
}
.about-card:hover {
  background: var(--surface-2);
  border-color: var(--border-2);
}
.about-card-icon { font-size: 28px; flex-shrink: 0; }
.about-card-text strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}
.about-card-text p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
  margin: 0;
}

/* ─── CONTACT ─── */
.contact {
  background: var(--bg-3);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: flex-start;
}

.contact-text h2 {
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}
.contact-text p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 32px;
}

.contact-promises {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.promise {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-2);
}
.promise-icon {
  font-size: 18px;
  flex-shrink: 0;
}

/* Form */
.contact-form-wrap {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
}
.required { color: var(--purple-light); }
.optional { color: var(--text-4); font-weight: 400; font-size: 12px; }

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-2);
  border-radius: 8px;
  padding: 13px 16px;
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  transition: var(--transition);
  outline: none;
  resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-4);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--purple);
  background: rgba(124,58,237,0.06);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.form-group input.error { border-color: #ef4444; }

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--purple);
  cursor: pointer;
}
.form-check label {
  font-size: 13px;
  color: var(--text-3);
  cursor: pointer;
  line-height: 1.5;
}
.link {
  color: var(--purple-light);
  text-decoration: none;
}
.link:hover { text-decoration: underline; }

.form-success,
.form-error {
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.form-success {
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.2);
}
.success-icon { font-size: 40px; margin-bottom: 12px; }
.form-success h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.form-success p, .form-error p { font-size: 14px; color: var(--text-2); }
.form-error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
}
.form-error p { color: #fca5a5; }

/* ─── FOOTER ─── */
.footer {
  background: #020208;
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 280px;
}
.footer-parent {
  margin-top: 6px !important;
  font-size: 13px !important;
  color: var(--text-4) !important;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: var(--text-3);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-4);
}
.footer-legal {
  display: flex;
  gap: 24px;
}
.footer-legal a {
  color: var(--text-4);
  text-decoration: none;
  transition: var(--transition);
}
.footer-legal a:hover { color: var(--text-3); }

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 120px 24px 80px;
  }
  .hero-visual { max-width: 400px; margin: 0 auto; }

  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .use-cases-grid { grid-template-columns: repeat(2, 1fr); }
  .opportunity-inner { grid-template-columns: 1fr; gap: 48px; }
  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }

  .pricing-card {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 32px;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(5,5,15,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open + .nav-cta { display: flex; }

  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 17px; }
  .hero-actions { flex-direction: column; }
  .hero-stats { gap: 16px; }

  .problem-grid { grid-template-columns: 1fr; }
  .impact-grid { grid-template-columns: 1fr 1fr; }
  .use-cases-grid { grid-template-columns: 1fr; }

  .step { grid-template-columns: 48px 1fr; gap: 16px; }
  .step-number { font-size: 36px; }
  .step-connector { margin-left: 23px; }

  .tech-logo-grid { grid-template-columns: 1fr; }

  .pricing-card { padding: 28px 20px; }

  .footer-inner { flex-direction: column; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }

  .about-stats { flex-wrap: wrap; gap: 20px; }

  /* Fix overflow en móvil */
  .opportunity-inner,
  .about-inner,
  .contact-inner { grid-template-columns: 1fr !important; }

  .opportunity-list li,
  .about-text p,
  .contact-text p { word-break: break-word; }

  .section-header h2,
  .hero-title,
  .opportunity-text h2,
  .about-text h2,
  .contact-text h2 { word-break: break-word; }

  * { max-width: 100%; box-sizing: border-box; }
}

/* ─── MODAL ─── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.open {
  display: flex;
}
.modal-box {
  background: #0f0f24;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-3);
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: var(--transition);
}
.modal-close:hover {
  background: var(--surface-2);
  color: var(--text);
}
.modal-body {
  padding: 28px 32px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.modal-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
}
.modal-body ul {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.modal-body ul li {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}
.modal-body ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.modal-body ol li {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}
.modal-body h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-top: 8px;
}

@media (max-width: 480px) {
  .section { padding: 72px 0; }
  .container { padding: 0 16px; }
  .impact-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px 20px; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { display: none; }
}