:root {
    --engi-blue: #0046ad;
    --engi-cyan: #00d4ff;
    --white-base: #ffffff;
    --dark-obsidian: #030712;
    --dark-glass: rgba(15, 23, 42, 0.92);
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-light: rgba(255, 255, 255, 0.08);
    --shadow-premium: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --section-alt: rgba(248, 250, 252, 0.7);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Scrollbar personalizado */
html {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 70, 173, 0.45) transparent;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--engi-cyan), var(--engi-blue));
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--engi-cyan);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}

/* Barra de progreso al desplazarse */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--engi-blue), var(--engi-cyan));
    z-index: 200;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.45);
    pointer-events: none;
}

body {
    background-color: var(--white-base);
    color: var(--text-dark);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-mesh {
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(at 10% 10%, rgba(0, 70, 173, 0.03) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(0, 212, 255, 0.05) 0px, transparent 50%);
    z-index: -1;
}

/* Nav */
.top-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 70, 173, 0.06);
}

.nav-logo { height: 36px; }

.nav-links { display: flex; gap: 28px; list-style: none; }

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--engi-blue); }

.nav-cta {
    padding: 10px 22px;
    background: var(--engi-blue);
    color: white !important;
    border-radius: 6px;
}

/* Hero */
header {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 20px 80px;
}

.hero-badge {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--engi-blue);
    text-transform: uppercase;
    letter-spacing: 6px;
    margin-bottom: 16px;
    border: 1px solid rgba(0, 70, 173, 0.15);
    padding: 8px 20px;
    border-radius: 4px;
}

.hero-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--engi-blue);
    letter-spacing: 4px;
    margin-bottom: 24px;
}

.logo-main {
    max-width: 480px;
    width: 85%;
    height: auto;
    margin-bottom: 28px;
    filter: drop-shadow(0 15px 40px rgba(0, 70, 173, 0.1));
    animation: float 8s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

.hero-desc {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text-muted);
    max-width: 780px;
    margin-bottom: 40px;
    letter-spacing: 0.3px;
}

.primary-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 70px;
}

.btn {
    padding: 16px 36px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn-primary { background: var(--engi-blue); color: white; box-shadow: 0 10px 30px rgba(0, 70, 173, 0.15); }
.btn-outline { border: 1px solid rgba(0, 70, 173, 0.25); color: var(--engi-blue); }
.btn:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0, 70, 173, 0.2); }

.management-portal {
    position: relative;
    padding-top: 40px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.management-portal::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 100px; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.08), transparent);
}

.portal-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 5px;
}

.btn-manage {
    background: var(--dark-obsidian);
    color: white;
    padding: 22px 56px;
    border-radius: 4px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-premium);
    position: relative;
    overflow: hidden;
    display: inline-block;
    transition: 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn-manage:hover {
    transform: scale(1.04);
    border-color: var(--engi-cyan);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.12);
}

.btn-manage::after {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: lightSweep 5s infinite;
}

@keyframes lightSweep {
    0% { left: -100%; }
    40%, 100% { left: 100%; }
}

/* Service strip */
.service-strip {
    background: var(--dark-obsidian);
    padding: 48px 20px;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.service-strip-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 12px;
    max-width: 1400px;
    margin: 0 auto;
}

.strip-item span {
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.35;
    display: block;
}

.strip-item {
    text-align: center;
    color: rgba(255,255,255,0.85);
    transition: transform 0.4s, color 0.4s;
}

.strip-item:hover { transform: translateY(-6px); color: var(--engi-cyan); }

.strip-item i {
    font-size: 1.4rem;
    margin-bottom: 10px;
    display: block;
    color: var(--engi-cyan);
}

/* Sections */
section { padding: 100px 20px; }

.section-alt { background: var(--section-alt); }

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

.section-header { text-align: center; margin-bottom: 56px; }

.section-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--engi-blue);
    text-transform: uppercase;
    letter-spacing: 5px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--text-dark);
}

.section-header p {
    color: var(--text-muted);
    max-width: 640px;
    margin: 12px auto 0;
    font-size: 0.95rem;
}

/* Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.card {
    background: var(--dark-glass);
    backdrop-filter: blur(20px);
    padding: 44px 36px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-premium);
    transition: 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-12px);
    border-color: rgba(0, 212, 255, 0.25);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.2);
}

.card-line {
    position: absolute;
    bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--engi-cyan);
    transition: 0.5s ease;
}

.card:hover .card-line { width: 100%; }

.card h3 { color: white; margin-bottom: 16px; font-weight: 800; font-size: 1.35rem; }
.card p { color: rgba(255,255,255,0.6); font-size: 0.92rem; line-height: 1.75; }

.card-icon {
    font-size: 1.8rem;
    color: var(--engi-cyan);
    margin-bottom: 20px;
}

/* Info grid (datasheet columns) */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.info-panel {
    background: white;
    border: 1px solid rgba(0, 70, 173, 0.08);
    border-radius: 8px;
    padding: 36px 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    transition: box-shadow 0.4s, border-color 0.4s;
}

.info-panel:hover {
    border-color: rgba(0, 70, 173, 0.18);
    box-shadow: 0 12px 40px rgba(0, 70, 173, 0.08);
}

.info-panel h3 {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--engi-blue);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(0, 70, 173, 0.1);
}

.info-list { list-style: none; }

.info-list li {
    position: relative;
    padding: 8px 0 8px 22px;
    font-size: 0.9rem;
    color: var(--text-dark);
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.info-list li:last-child { border-bottom: none; }

.info-list li::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 6px; height: 6px;
    background: var(--engi-cyan);
    border-radius: 50%;
}

/* Tags */
.tag-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tag {
    padding: 10px 20px;
    background: white;
    border: 1px solid rgba(0, 70, 173, 0.12);
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--engi-blue);
    transition: all 0.3s;
}

.tag:hover {
    background: var(--engi-blue);
    color: white;
    transform: translateY(-2px);
}

.tag-dark {
    background: var(--dark-obsidian);
    border-color: var(--border-light);
    color: rgba(255,255,255,0.85);
}

.tag-dark:hover {
    background: var(--engi-blue);
    border-color: var(--engi-blue);
    color: white;
}

/* Compliance */
.compliance-block {
    background: linear-gradient(135deg, var(--engi-blue) 0%, #002d6e 100%);
    border-radius: 12px;
    padding: 56px 48px;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.compliance-block::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.compliance-block h3 {
    font-size: 0.7rem;
    font-family: 'Space Mono', monospace;
    letter-spacing: 5px;
    text-transform: uppercase;
    opacity: 0.7;
    margin-bottom: 16px;
}

.compliance-block p {
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.8;
    max-width: 820px;
    margin: 0 auto;
}

/* Panel preview */
.panel-preview {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 48px;
    align-items: center;
}

.panel-preview-text h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.panel-preview-text p { color: var(--text-muted); margin-bottom: 24px; }

.panel-mock {
    background: var(--dark-obsidian);
    border-radius: 10px;
    border: 1px solid var(--border-light);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
}

.panel-mock-bar {
    background: rgba(255,255,255,0.05);
    padding: 12px 16px;
    display: flex;
    gap: 6px;
}

.panel-mock-bar span {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
}

.panel-mock-bar span:first-child { background: #ef4444; }
.panel-mock-bar span:nth-child(2) { background: #eab308; }
.panel-mock-bar span:nth-child(3) { background: #22c55e; }

.panel-mock-body {
    display: grid;
    grid-template-columns: 180px 1fr;
    min-height: 280px;
}

.panel-sidebar {
    background: rgba(0,0,0,0.3);
    padding: 20px 16px;
    border-right: 1px solid var(--border-light);
}

.panel-sidebar div {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.4);
    padding: 8px 10px;
    border-radius: 4px;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.panel-sidebar div.active {
    background: rgba(0, 70, 173, 0.4);
    color: var(--engi-cyan);
}

.panel-content { padding: 24px; }

.panel-content h4 {
    color: white;
    font-size: 0.85rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.panel-domain {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    padding: 12px 16px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-domain span { color: rgba(255,255,255,0.7); font-size: 0.8rem; font-family: 'Space Mono', monospace; }

.panel-status {
    font-size: 0.65rem;
    color: #22c55e;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Footer */
footer {
    padding: 80px 20px 40px;
    text-align: center;
    background: var(--dark-obsidian);
    color: rgba(255,255,255,0.6);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto 48px;
    text-align: left;
}

.footer-grid h4 {
    color: white;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.footer-grid a {
    display: block;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 4px 0;
    transition: color 0.3s;
}

.footer-grid a:hover { color: var(--engi-cyan); }

.company-line {
    font-family: 'Space Mono', monospace;
    letter-spacing: 3px;
    margin-bottom: 10px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.8);
}

.footer-bottom {
    border-top: 1px solid var(--border-light);
    padding-top: 24px;
    font-size: 0.75rem;
}

@media (max-width: 900px) {
    .top-nav { padding: 14px 20px; }
    .nav-links { display: none; }
    .service-strip { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .service-strip::-webkit-scrollbar { display: none; }
    .service-strip-grid { min-width: 900px; }
    .panel-preview { grid-template-columns: 1fr; }
    .panel-mock-body { grid-template-columns: 1fr; }
    .panel-sidebar { display: flex; flex-wrap: wrap; gap: 4px; border-right: none; border-bottom: 1px solid var(--border-light); }
}

@media (max-width: 768px) {
    .primary-actions { flex-direction: column; width: 100%; max-width: 320px; }
    .btn { text-align: center; }
    .info-grid { grid-template-columns: 1fr; }
    .compliance-block { padding: 36px 24px; }
}