/* ============================================
   NODOSTUDIO - MAIN CSS v3.0
   SaaS Modern Design (Stripe / Vercel inspired)
   ============================================ */

/* ---- GOOGLE FONTS FALLBACK ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Poppins:wght@600;700;800;900&display=swap');

/* ============================================
   CSS VARIABLES - TEMAS
   ============================================ */
:root,
:root[data-theme="light"] {
    /* Fondos */
    --bg-primary:    #F8F9FB;
    --bg-secondary:  #EEF1F5;
    --bg-tertiary:   #E3E8F0;
    --bg-card:       #FFFFFF;
    --bg-card-hover: #F0F4FF;
    /* Texto */
    --text-primary:  #0F172A;
    --text-secondary: #334155;
    --text-tertiary:  #64748B;
    --text-muted:     #94A3B8;
    /* Bordes */
    --border-color:   rgba(15,23,42,0.08);
    --border-hover:   rgba(37,99,235,0.3);
    /* Acentos */
    --accent-blue:    #2563EB;
    --accent-blue-hover: #1D4ED8;
    --accent-blue-light: #EFF6FF;
    --accent-green:   #10B981;
    --accent-green-hover: #059669;
    --accent-green-light: #ECFDF5;
    /* Sombras */
    --shadow-sm:      0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:      0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
    --shadow-lg:      0 10px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
    --shadow-xl:      0 20px 60px rgba(0,0,0,0.12);
    /* Header */
    --header-bg:      rgba(248,249,251,0.92);
    --header-border:  rgba(15,23,42,0.08);
    /* Chat IA */
    --ai-bg:          #F8F9FB;
    --ai-user-bg:     #EFF6FF;
    --ai-primary:     #2563EB;
    --ai-secondary:   #10B981;
    --ai-border:      rgba(15,23,42,0.08);
    /* Misc */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

:root[data-theme="dark"] {
    --bg-primary:    #0A0A0F;
    --bg-secondary:  #0F0F1A;
    --bg-tertiary:   #141420;
    --bg-card:       #141420;
    --bg-card-hover: #1A1A2E;
    --text-primary:  #F1F5F9;
    --text-secondary:#CBD5E1;
    --text-tertiary: #94A3B8;
    --text-muted:    #64748B;
    --border-color:  rgba(241,245,249,0.06);
    --border-hover:  rgba(37,99,235,0.5);
    --accent-blue:   #3B82F6;
    --accent-blue-hover: #2563EB;
    --accent-blue-light: rgba(59,130,246,0.12);
    --accent-green:  #10B981;
    --accent-green-hover: #059669;
    --accent-green-light: rgba(16,185,129,0.12);
    --shadow-sm:     0 1px 3px rgba(0,0,0,0.3);
    --shadow-md:     0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg:     0 10px 40px rgba(0,0,0,0.5);
    --shadow-xl:     0 20px 60px rgba(0,0,0,0.6);
    --header-bg:     rgba(10,10,15,0.92);
    --header-border: rgba(241,245,249,0.06);
    --ai-bg:         #141420;
    --ai-user-bg:    #1A1A2E;
    --ai-primary:    #3B82F6;
    --ai-secondary:  #10B981;
    --ai-border:     rgba(241,245,249,0.06);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
    padding-top: 72px;
}

@media (max-width: 768px) {
    body { padding-top: 60px; }
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-tertiary);
    margin-top: 12px;
    max-width: 600px;
    line-height: 1.7;
}

.badge-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 50px;
    border: 1px solid var(--border-hover);
    margin-bottom: 16px;
}

/* ============================================
   LOADER
   ============================================ */
#loader-wrapper {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 99999;
    background: #050505;
    display: flex;
    justify-content: center; align-items: center;
    flex-direction: column;
    transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.6s;
}
#loader-wrapper.loaded { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-logo-text {
    font-family: 'Poppins', sans-serif;
    font-size: 52px; font-weight: 900;
    letter-spacing: 6px; color: #fff;
    display: flex; align-items: center;
    margin-bottom: 32px;
}
.loader-n {
    position: relative; color: #fff;
    animation: glitch-n 3s infinite linear alternate-reverse;
}
.loader-bar-bg {
    width: 160px; height: 3px;
    background: rgba(255,255,255,0.1); border-radius: 10px; overflow: hidden;
}
.loader-bar-fill {
    height: 100%; background: linear-gradient(90deg, #2563EB, #10B981);
    width: 0%; box-shadow: 0 0 10px #2563EB;
    animation: fillBar 1.4s ease-in-out forwards;
}
@keyframes fillBar { 0% { width: 0%; } 100% { width: 100%; } }
@keyframes glitch-n {
    0%, 90% { transform: none; }
    91% { transform: translate(2px, 0); color: #3B82F6; }
    92% { transform: translate(-2px, 0); color: #10B981; }
    93% { transform: none; color: #fff; }
}

/* ============================================
   SCROLL PROGRESS
   ============================================ */
#scroll-progress {
    position: fixed; top: 0; left: 0; height: 3px; width: 0%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    z-index: 9999; transition: width 0.1s;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed; top: 0; left: 0; right: 0;
    height: 72px; z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(1.8);
    -webkit-backdrop-filter: blur(20px) saturate(1.8);
    border-bottom: 1px solid var(--header-border);
    transition: all var(--transition);
}
.header.scrolled {
    height: 64px;
    box-shadow: var(--shadow-sm);
}
.header.nav-hidden { transform: translateY(-100%); }
.header .container {
    height: 100%; display: flex;
    align-items: center; justify-content: space-between;
    gap: 24px;
}
.logo {
    display: flex; align-items: center; gap: 2px;
    font-family: 'Poppins', sans-serif; font-weight: 800;
    font-size: 1.5rem; letter-spacing: 2px;
    color: var(--text-primary);
    flex-shrink: 0;
    transition: opacity var(--transition);
}
.logo:hover { opacity: 0.8; }
.logo-n { color: var(--accent-blue); }
.logo-text { color: var(--text-primary); }

.nav {
    display: flex; align-items: center; gap: 4px;
}
.nav-link {
    font-size: 0.875rem; font-weight: 500;
    color: var(--text-secondary);
    padding: 7px 12px; border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-secondary); }
.nav-link.active { color: var(--accent-blue); font-weight: 600; }
.nav-link.nav-cta {
    background: var(--accent-blue);
    color: #fff !important;
    padding: 7px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-left: 8px;
}
.nav-link.nav-cta:hover { background: var(--accent-blue-hover); transform: translateY(-1px); }

/* Theme Toggle */
.theme-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 36px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
    margin-left: 8px; flex-shrink: 0;
}
.theme-toggle:hover { color: var(--text-primary); border-color: var(--border-hover); }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* Mobile menu */
.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    padding: 8px; cursor: pointer;
    width: 38px; height: 38px; align-items: center; justify-content: center;
}
.mobile-menu-btn span {
    display: block; width: 22px; height: 2px;
    background: var(--text-primary); border-radius: 2px;
    transition: all 0.3s;
}
.mobile-nav {
    display: none;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 12px 24px 20px;
}
.mobile-nav.open { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link {
    font-size: 0.95rem; font-weight: 500;
    color: var(--text-secondary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.mobile-nav-link:hover, .mobile-nav-link.active {
    color: var(--accent-blue);
    background: var(--accent-blue-light);
}

@media (max-width: 900px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .header { height: 60px; }
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: calc(100vh - 72px);
    display: flex; align-items: center;
    padding: 80px 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0;
    background: var(--bg-primary);
    z-index: 0;
}

/* Hero gradient orbs */
.hero::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, transparent 70%);
    top: -100px; right: -100px;
    pointer-events: none; z-index: 0;
}
.hero::after {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 70%);
    bottom: -80px; left: -80px;
    pointer-events: none; z-index: 0;
}

.hero-content {
    position: relative; z-index: 1;
    max-width: 760px;
}

.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    font-size: 0.8rem; font-weight: 600;
    letter-spacing: 0.1em; text-transform: uppercase;
    padding: 6px 14px; border-radius: 50px;
    border: 1px solid var(--border-hover);
    margin-bottom: 24px;
}
.hero-eyebrow .dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent-green);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%,100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero h1 {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2.4rem, 5.5vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    margin-bottom: 24px;
}
.hero h1 .accent { color: var(--accent-blue); }
.hero h1 .accent-green { color: var(--accent-green); }

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-tertiary);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex; gap: 12px; flex-wrap: wrap;
    align-items: center;
}

.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent-blue);
    color: #fff; font-weight: 600; font-size: 0.95rem;
    padding: 14px 28px; border-radius: var(--radius-md);
    transition: all var(--transition);
    box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37,99,235,0.4);
}

.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-weight: 600; font-size: 0.95rem;
    padding: 14px 28px; border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}
.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-green {
    background: var(--accent-green);
    box-shadow: 0 4px 14px rgba(16,185,129,0.3);
}
.btn-green:hover {
    background: var(--accent-green-hover);
    box-shadow: 0 8px 24px rgba(16,185,129,0.4);
}

/* Status badge in CTA */
.status-dot-inline {
    display: inline-block; width: 8px; height: 8px;
    border-radius: 50%; background: #9ca3af;
}
.status-dot-inline.online {
    background: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.2);
    animation: pulse-dot 2s infinite;
}
.status-dot-inline.offline { background: #ef4444; }

/* Hero trust line */
.hero-trust {
    display: flex; align-items: center; gap: 24px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}
.trust-item {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.8rem; font-weight: 500;
    color: var(--text-muted);
}
.trust-item svg { color: var(--accent-green); flex-shrink: 0; }

/* Hero canvas (preserved from original) */
.hero-canvas-wrap {
    position: absolute; right: 0; top: 0;
    width: 50%; height: 100%;
    pointer-events: none; z-index: 0;
    opacity: 0.6;
}
#nodo-network-container {
    width: 100%; height: 100%;
}
#nodo-canvas { width: 100%; height: 100%; }

@media (max-width: 768px) {
    .hero { min-height: 90vh; padding: 60px 0; }
    .hero-canvas-wrap { opacity: 0.2; width: 100%; }
    .hero-trust { gap: 16px; }
}

/* ============================================
   STATS BAR
   ============================================ */
.stats-bar {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 32px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item {}
.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 2rem; font-weight: 800;
    color: var(--text-primary); letter-spacing: -0.03em;
}
.stat-number span { color: var(--accent-blue); }
.stat-label {
    font-size: 0.85rem; color: var(--text-muted); margin-top: 4px;
}
@media (max-width: 640px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   SECCIONES GENÉRICAS
   ============================================ */
.section {
    padding: 96px 0;
}
.section-header {
    margin-bottom: 56px;
}
.section-header.centered {
    text-align: center;
}
.section-header.centered .section-subtitle {
    margin: 12px auto 0;
}

/* ============================================
   SERVICIOS
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    cursor: pointer;
    position: relative; overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--card-accent, var(--accent-blue)), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}
.service-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
    width: 52px; height: 52px;
    background: var(--accent-blue-light);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 20px;
}

.service-card h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem; font-weight: 700;
    color: var(--text-primary); margin-bottom: 10px;
}
.service-card p {
    font-size: 0.9rem; color: var(--text-tertiary);
    line-height: 1.7; margin-bottom: 20px;
}

.service-tags {
    display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px;
}
.tag {
    font-size: 0.72rem; font-weight: 600;
    color: var(--accent-blue); background: var(--accent-blue-light);
    padding: 3px 10px; border-radius: 50px;
    letter-spacing: 0.04em;
}

.service-footer {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 20px; border-top: 1px solid var(--border-color);
}
.service-price {
    font-weight: 700; color: var(--accent-green); font-size: 0.9rem;
}
.service-duration {
    font-size: 0.8rem; color: var(--text-muted);
}

.service-card .arrow-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.85rem; font-weight: 600; color: var(--accent-blue);
    transition: gap var(--transition);
}
.service-card:hover .arrow-link { gap: 10px; }

/* ============================================
   PRODUCTOS - NODOCASH
   ============================================ */
.product-hero {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    border-radius: var(--radius-xl);
    padding: 64px;
    position: relative; overflow: hidden;
    border: 1px solid rgba(255,255,255,0.06);
}
.product-hero::before {
    content: '';
    position: absolute; top: -50%; right: -20%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.product-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(16,185,129,0.15); color: #10B981;
    font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em;
    text-transform: uppercase; padding: 5px 14px;
    border-radius: 50px; border: 1px solid rgba(16,185,129,0.3);
    margin-bottom: 24px;
}
.product-hero h2 {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900; color: #fff; letter-spacing: -0.03em;
    margin-bottom: 16px;
}
.product-hero p { color: #94A3B8; font-size: 1.1rem; line-height: 1.7; max-width: 500px; margin-bottom: 32px; }

.product-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px; margin-top: 32px;
}
.product-feature-item {
    display: flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.04);
    padding: 12px 16px; border-radius: var(--radius-sm);
    border: 1px solid rgba(255,255,255,0.06);
    font-size: 0.85rem; color: #CBD5E1;
}
.product-feature-item::before {
    content: '✓'; color: #10B981;
    font-weight: 700; flex-shrink: 0;
}
@media (max-width: 640px) {
    .product-hero { padding: 36px 24px; }
    .product-features-grid { grid-template-columns: 1fr; }
}

/* ============================================
   PROCESO / METODOLOGÍA
   ============================================ */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}
.process-steps::before {
    content: '';
    position: absolute;
    top: 28px; left: 60px; right: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    z-index: 0;
}
.process-step {
    text-align: center; padding: 0 16px;
    position: relative; z-index: 1;
}
.step-number {
    width: 56px; height: 56px;
    background: var(--bg-card);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
    font-family: 'Poppins', sans-serif;
    font-weight: 800; font-size: 1.1rem;
    color: var(--accent-blue);
    position: relative; z-index: 1;
}
.step-number.active {
    background: var(--accent-blue); color: #fff;
    box-shadow: 0 0 0 6px var(--accent-blue-light);
}
.process-step h4 {
    font-weight: 700; font-size: 1rem;
    color: var(--text-primary); margin-bottom: 8px;
}
.process-step p { font-size: 0.85rem; color: var(--text-tertiary); line-height: 1.6; }
@media (max-width: 768px) {
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .process-steps::before { display: none; }
}
@media (max-width: 480px) {
    .process-steps { grid-template-columns: 1fr; }
}

/* ============================================
   PROYECTOS
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
@media (max-width: 900px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .projects-grid { grid-template-columns: 1fr; }
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s;
}
.project-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.project-image {
    height: 180px; background: var(--bg-secondary);
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem; position: relative; overflow: hidden;
}
.project-image img { width: 100%; height: 100%; object-fit: cover; }
.project-status-badge {
    position: absolute; top: 12px; right: 12px;
    font-size: 0.7rem; font-weight: 700;
    padding: 4px 10px; border-radius: 50px;
}
.project-status-badge.completado { background: var(--accent-green-light); color: var(--accent-green); }
.project-status-badge.en-progreso { background: rgba(245,158,11,0.1); color: #F59E0B; }
.project-body { padding: 24px; }
.project-body h3 {
    font-weight: 700; font-size: 1.05rem;
    color: var(--text-primary); margin-bottom: 8px;
}
.project-body p { font-size: 0.875rem; color: var(--text-tertiary); line-height: 1.6; margin-bottom: 16px; }
.project-techs {
    display: flex; flex-wrap: wrap; gap: 6px;
}
.tech-tag {
    font-size: 0.7rem; font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    padding: 3px 8px; border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Empty state for projects */
.projects-placeholder {
    grid-column: 1 / -1;
    text-align: center; padding: 64px 24px;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
}
.projects-placeholder .placeholder-icon { font-size: 3rem; margin-bottom: 16px; }
.projects-placeholder h3 { color: var(--text-secondary); margin-bottom: 8px; }
.projects-placeholder p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================
   CTA FINAL
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #1E40AF 100%);
    border-radius: var(--radius-xl);
    padding: 80px 64px;
    text-align: center;
    position: relative; overflow: hidden;
    margin: 0 0 96px;
}
.cta-section::before {
    content: '';
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}
.cta-section h2 {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 900; color: #fff;
    letter-spacing: -0.03em; margin-bottom: 16px;
}
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 40px; }
.cta-section .btn-white {
    background: #fff; color: var(--accent-blue);
    font-weight: 700; font-size: 1rem;
    padding: 16px 32px; border-radius: var(--radius-md);
    display: inline-flex; align-items: center; gap: 8px;
    transition: all var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.cta-section .btn-white:hover {
    transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
@media (max-width: 640px) {
    .cta-section { padding: 48px 24px; }
}

/* ============================================
   CONTACTO
   ============================================ */
.contact-grid {
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: 48px; align-items: start;
}
@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}
.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.contact-info-item {
    display: flex; align-items: flex-start; gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-icon {
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    background: var(--accent-blue-light);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-blue); flex-shrink: 0;
}
.contact-info-text label { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; display: block; margin-bottom: 4px; }
.contact-info-text a, .contact-info-text span { font-size: 0.95rem; color: var(--text-primary); font-weight: 500; }
.contact-info-text a:hover { color: var(--accent-blue); }

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-size: 0.875rem; font-weight: 600;
    color: var(--text-secondary); margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-user-select: text !important;
    user-select: text !important;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-light);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }

.social-links-row {
    display: flex; gap: 12px; flex-wrap: wrap;
    margin-top: 24px;
}
.social-link-btn {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem; font-weight: 500;
    transition: all var(--transition);
}
.social-link-btn:hover {
    border-color: var(--border-hover);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

/* ============================================
   ABOUT / FEATURE SECTIONS
   ============================================ */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 64px; align-items: center;
}
@media (max-width: 768px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
}
.about-text p {
    color: var(--text-tertiary); line-height: 1.8; margin-bottom: 16px;
}
.value-badges {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin-top: 28px;
}
.badge {
    display: flex; align-items: center; gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 16px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 500;
    color: var(--text-secondary);
}
.badge-icon { font-size: 1rem; }
.about-image {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    height: 420px; overflow: hidden;
    position: relative;
}
.about-image #nodo-network-container { width: 100%; height: 100%; }
.overlay-gradient {
    position: absolute; inset: 0;
    background: radial-gradient(circle at center, transparent 50%, var(--bg-primary) 100%);
    pointer-events: none;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 64px;
}
.footer-top {
    display: flex; gap: 48px;
    padding-bottom: 48px;
}
.footer-brand { flex: 0 0 260px; }
.footer-logo {
    display: inline-flex; align-items: center; gap: 2px;
    font-family: 'Poppins', sans-serif;
    font-weight: 800; font-size: 1.4rem; letter-spacing: 2px;
    color: var(--text-primary); margin-bottom: 12px;
}
.footer-tagline {
    font-size: 0.85rem; color: var(--text-muted);
    line-height: 1.7; margin-bottom: 24px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
    width: 36px; height: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition);
}
.footer-social a:hover { color: var(--accent-blue); border-color: var(--border-hover); transform: translateY(-2px); }

.footer-grid {
    display: flex; gap: 48px; flex: 1; justify-content: flex-end;
}
.footer-col { min-width: 140px; }
.footer-col h4 {
    font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}
.footer-col a {
    display: block; font-size: 0.875rem;
    color: var(--text-muted); margin-bottom: 10px;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px;
    font-size: 0.8rem; color: var(--text-muted);
}
.footer-legal { display: flex; align-items: center; gap: 12px; }
.footer-legal a { color: var(--text-muted); transition: color var(--transition); }
.footer-legal a:hover { color: var(--text-primary); }

.ping-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #9ca3af; display: inline-block;
}
.ping-dot.online {
    background: var(--accent-green);
    animation: pulse-dot 2s infinite;
}
.ping-dot.offline { background: #ef4444; }

@media (max-width: 768px) {
    .footer-top { flex-direction: column; gap: 32px; }
    .footer-brand { flex: none; }
    .footer-grid { flex-wrap: wrap; gap: 32px; }
}

/* ============================================
   ANIMACIONES
   ============================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }
.delay-4 { transition-delay: 0.4s !important; }

/* Botón scroll top */
.scroll-top {
    position: fixed; bottom: 100px; right: 24px;
    width: 40px; height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; z-index: 100;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover { color: var(--accent-blue); border-color: var(--border-hover); transform: translateY(-2px); }

/* ============================================
   CHATBOT AI - PRESERVADO + ADAPTADO AL NUEVO TEMA
   ============================================ */
.ai-assistant-btn {
    position: fixed; bottom: 24px; right: 24px;
    width: 60px; height: 60px;
    background: linear-gradient(135deg, var(--accent-blue), #1E40AF);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; z-index: 999;
    box-shadow: 0 8px 24px rgba(37,99,235,0.4);
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    border: none;
    flex-direction: column; gap: 0;
}
.ai-assistant-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(37,99,235,0.5);
}
.ai-icon { color: #fff; }
.ai-badge { display: none; }
.ai-pulse {
    position: absolute; top: 0; right: 0;
    width: 16px; height: 16px;
    background: var(--accent-green);
    border-radius: 50%; border: 2px solid var(--bg-primary);
    animation: pulse-dot 2s infinite;
}

.ai-assistant-panel {
    position: fixed; bottom: 94px; right: 24px;
    width: 360px; max-height: 520px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex; flex-direction: column;
    z-index: 998; opacity: 0; pointer-events: none;
    transform: scale(0.95) translateY(10px);
    transform-origin: bottom right;
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
}
.ai-assistant-panel.active {
    opacity: 1; pointer-events: auto;
    transform: scale(1) translateY(0);
}
.ai-panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
    flex-shrink: 0;
}
.ai-header-info h3 { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); }
.ai-status-badge {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.72rem; color: var(--accent-green); font-weight: 600;
    margin-top: 2px;
}
.status-dot-pulse {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--accent-green);
    animation: pulse-dot 2s infinite;
}
.ai-close-btn {
    width: 30px; height: 30px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-secondary);
    transition: all var(--transition);
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    font-size: 0.85rem;
}
.ai-close-btn:hover { background: #EF4444; color: #fff; border-color: #EF4444; }

.ai-quick-actions {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.quick-actions-label {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.72rem; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em;
    cursor: pointer; padding: 4px 0;
}
.toggle-arrow { transition: transform 0.3s; font-size: 0.65rem; }
.quick-actions-grid {
    display: flex; flex-wrap: wrap; gap: 6px;
    padding-top: 10px;
    overflow: hidden; transition: all 0.3s;
}
.quick-action-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 6px 12px; font-size: 0.78rem; font-weight: 500;
    cursor: pointer; white-space: nowrap;
    transition: all var(--transition);
}
.quick-action-btn:hover {
    background: var(--accent-blue-light);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.ai-chat-container {
    flex: 1; overflow-y: auto; padding: 16px;
    display: flex; flex-direction: column; gap: 12px;
    scrollbar-width: thin; scrollbar-color: var(--border-color) transparent;
}
.ai-welcome-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md); padding: 20px;
    text-align: center;
}
.welcome-icon { font-size: 2rem; margin-bottom: 10px; }
.ai-welcome-card h3 { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.ai-welcome-card p { font-size: 0.82rem; color: var(--text-tertiary); line-height: 1.6; }
.welcome-stats { margin-top: 12px; }
.stat-text { font-size: 0.75rem; color: var(--text-muted); }

.ai-message {
    display: flex; gap: 10px; align-items: flex-start;
}
.ai-message.ai-message-user { flex-direction: row-reverse; }
.ai-avatar {
    width: 30px; height: 30px; border-radius: 50%;
    background: var(--bg-secondary);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); flex-shrink: 0;
}
.ai-avatar.ai-avatar-assistant {
    background: var(--accent-blue-light); color: var(--accent-blue);
}
.ai-message-content {
    max-width: 80%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.85rem; color: var(--text-primary);
    line-height: 1.6;
}
.ai-message-user .ai-message-content {
    background: var(--accent-blue);
    color: #fff; border-color: var(--accent-blue);
}
.ai-quick-replies {
    display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px;
}
.quick-reply-chip {
    background: var(--accent-blue-light);
    border: 1px solid var(--border-hover);
    color: var(--accent-blue);
    border-radius: 50px;
    padding: 4px 12px; font-size: 0.75rem; font-weight: 600;
    cursor: pointer; transition: all var(--transition);
    font-family: inherit;
}
.quick-reply-chip:hover {
    background: var(--accent-blue); color: #fff;
}

.ai-typing-indicator {
    display: flex; gap: 5px; padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    width: fit-content;
}
.ai-typing-indicator span {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--text-muted);
    animation: typing-bounce 1.2s ease-in-out infinite;
}
.ai-typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-bounce {
    0%,100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(-6px); opacity: 1; }
}

.ai-input-container {
    padding: 12px 16px; border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}
.ai-input-wrapper {
    display: flex; gap: 8px; align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 4px 4px 4px 14px;
    transition: border-color var(--transition);
}
.ai-input-wrapper:focus-within { border-color: var(--accent-blue); }
.ai-input {
    flex: 1; background: transparent; border: none; outline: none;
    color: var(--text-primary); font-size: 0.875rem;
    -webkit-user-select: text !important; user-select: text !important;
}
.ai-input::placeholder { color: var(--text-muted); }
.ai-send-btn {
    width: 32px; height: 32px;
    background: var(--accent-blue); color: #fff;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; transition: all var(--transition);
}
.ai-send-btn:hover { background: var(--accent-blue-hover); }

.ai-overlay {
    position: fixed; inset: 0; z-index: 997;
    background: rgba(0,0,0,0.3);
    display: none;
}
.ai-overlay.active { display: block; }

@media (max-width: 480px) {
    .ai-assistant-panel {
        width: calc(100vw - 24px); right: 12px;
        bottom: 84px;
    }
    .ai-assistant-btn { bottom: 16px; right: 16px; }
}

/* ============================================
   ABOUT / METODOLOGÍA
   ============================================ */
.method-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.method-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
}
.method-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.method-number {
    font-family: 'Poppins', sans-serif;
    font-size: 3rem; font-weight: 900;
    color: var(--accent-blue); opacity: 0.15;
    line-height: 1; margin-bottom: 12px;
}
.method-card h3 {
    font-weight: 700; font-size: 1.05rem;
    color: var(--text-primary); margin-bottom: 8px;
}
.method-card p { font-size: 0.875rem; color: var(--text-tertiary); line-height: 1.7; }

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-blue { color: var(--accent-blue); }
.text-green { color: var(--accent-green); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-24 { margin-bottom: 24px; }
.mb-48 { margin-bottom: 48px; }

/* Alert / Flash messages */
.alert {
    padding: 14px 18px; border-radius: var(--radius-sm);
    font-size: 0.9rem; margin-bottom: 20px;
    display: flex; align-items: center; gap: 10px;
}
.alert-success { background: var(--accent-green-light); color: var(--accent-green); border: 1px solid rgba(16,185,129,0.2); }
.alert-error { background: rgba(239,68,68,0.1); color: #DC2626; border: 1px solid rgba(239,68,68,0.2); }
.alert-info { background: var(--accent-blue-light); color: var(--accent-blue); border: 1px solid var(--border-hover); }

/* Security Toast */
#security-toast {
    position: fixed; bottom: 40px; left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(15,23,42,0.95);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 24px; border-radius: 50px;
    font-size: 14px; font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 2147483647;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}