/* =====================================================================
   TEFI'S ADAS — Estilos exclusivos de la sección /adas/
   -----------------------------------------------------------------------
   Se carga DESPUÉS de inicio.css y premium.css. Sólo agrega los pocos
   componentes NUEVOS que la sección ADAS necesita y que no existen en
   el sitio principal (layout de texto+imagen, checklist de "Why Tefi's",
   pasos del proceso, y el tag de división junto al logo). No modifica
   ni sobrescribe nada del sitio principal.
===================================================================== */

/* =============================================
   1. LINK DE REGRESO AL SITIO PRINCIPAL (navbar)
============================================= */
.nav-back-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:rgba(255,255,255,.55) !important;
    font-size:.78rem;
    padding-right:18px;
    margin-right:14px;
    border-right:1px solid rgba(255,255,255,.14);
    text-transform:none;
    letter-spacing:0;
}
.nav-back-link:hover{ color:var(--accent-glow) !important; }
.nav-back-link::after{ display:none; } /* sin el subrayado animado de los nav-link normales */

@media(max-width:768px){
    .nav-back-link{
        border-right:none;
        padding-right:0;
        margin-right:0;
        border-bottom:1px solid rgba(255,255,255,.1);
        padding-bottom:14px;
        margin-bottom:6px;
        width:100%;
    }
}

/* Tag de división junto al logo */
.adas-tag{
    font-family:var(--font-display);
    font-size:.62rem;
    font-weight:600;
    letter-spacing:1px;
    text-transform:uppercase;
    color:var(--white);
    background:var(--gradient-primary);
    padding:3px 10px;
    border-radius:20px;
    margin-left:10px;
    box-shadow:var(--shadow-glow-red);
    vertical-align:middle;
    white-space:nowrap;
}
@media(max-width:480px){ .adas-tag{ display:none; } }

/* =============================================
   2. SECCIONES OSCURAS ALTERNADAS (genérico, reutilizable)
============================================= */
.adas-section{
    position:relative;
    background:var(--dark-bg);
    padding:120px 0;
    overflow:hidden;
}
.adas-section.alt{ background:var(--dark-bg-2); }
.adas-section .container{ position:relative; z-index:1; }

@media(max-width:992px){ .adas-section{ padding:90px 0; } }
@media(max-width:768px){ .adas-section{ padding:70px 0; } }
@media(max-width:480px){ .adas-section{ padding:60px 0; } }

/* =============================================
   3. LAYOUT TEXTO + IMAGEN ("¿Qué es ADAS?")
============================================= */
.split-content{
    display:flex;
    align-items:center;
    gap:64px;
}
.split-text{ flex:1; min-width:0; }
.split-media{ flex:1; min-width:0; }

.split-text .section-header,
.split-text .section-title,
.split-text .section-description{
    text-align:left;
}
.split-text .section-title::after{
    margin:16px 0 0;
}
.split-text .section-description{
    margin:0 0 28px;
    max-width:none;
}
.split-text .trust-bar{
    justify-content:flex-start;
    margin-top:0;
}

.split-media img{
    width:100%;
    display:block;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-xl);
    border:1px solid rgba(255,255,255,.08);
}

@media(max-width:900px){
    .split-content{ flex-direction:column; gap:36px; }
    .split-text .section-header,
    .split-text .section-title,
    .split-text .section-description{ text-align:center; }
    .split-text .section-title::after{ margin:16px auto 0; }
    .split-text .trust-bar{ justify-content:center; }
}

/* =============================================
   4. PASOS DEL PROCESO ("How It Works")
============================================= */
.process-steps{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:26px;
}
.process-step{
    background:var(--dark-surface);
    border:1px solid var(--dark-border);
    border-radius:var(--radius-lg);
    padding:34px 26px;
    text-align:center;
    box-shadow:var(--shadow-md);
    transition:var(--transition);
}
.process-step:hover{
    transform:translateY(-6px);
    border-color:rgba(214,40,40,.4);
    box-shadow:var(--shadow-glow-red);
}
.process-step .step-number{
    font-family:var(--font-display);
    font-size:2.1rem;
    font-weight:700;
    color:var(--secondary);
    opacity:.9;
    margin-bottom:12px;
}
.process-step h3{
    font-family:var(--font-display);
    text-transform:uppercase;
    letter-spacing:.3px;
    font-size:1rem;
    color:var(--text-light);
    margin-bottom:10px;
}
.process-step p{
    color:var(--text-light-soft);
    font-size:.92rem;
    margin:0;
}
.process-note{
    text-align:center;
    color:var(--text-light-soft);
    font-size:.85rem;
    font-style:italic;
    margin:34px auto 0;
    max-width:640px;
}

@media(max-width:900px){
    .process-steps{ grid-template-columns:repeat(2,1fr); }
}
@media(max-width:520px){
    .process-steps{ grid-template-columns:1fr; }
}

/* =============================================
   5. CHECKLIST DE CONFIANZA ("Why Tefi's")
============================================= */
.feature-list{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:24px;
}
.feature-item{
    display:flex;
    gap:18px;
    align-items:flex-start;
    background:var(--dark-surface);
    border:1px solid var(--dark-border);
    border-radius:var(--radius-lg);
    padding:26px;
    box-shadow:var(--shadow-sm);
    transition:var(--transition);
}
.feature-item:hover{
    border-color:rgba(47,111,174,.45);
    box-shadow:var(--shadow-glow-blue);
    transform:translateY(-4px);
}
.feature-icon{
    width:52px;
    height:52px;
    flex-shrink:0;
    border-radius:50%;
    background:var(--gradient-accent);
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--white);
    font-size:1.15rem;
    box-shadow:var(--shadow-glow-blue);
}
.feature-item h4{
    font-family:var(--font-display);
    text-transform:uppercase;
    letter-spacing:.2px;
    font-size:.95rem;
    color:var(--text-light);
    margin-bottom:6px;
}
.feature-item p{
    color:var(--text-light-soft);
    font-size:.88rem;
    margin:0;
    line-height:1.5;
}

@media(max-width:700px){
    .feature-list{ grid-template-columns:1fr; }
}

/* =============================================
   7. ENLACES "LEARN MORE" DENTRO DE TARJETAS
============================================= */
.card-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:14px;
    color:var(--secondary);
    font-family:var(--font-display);
    font-size:.82rem;
    font-weight:600;
    letter-spacing:.3px;
    text-decoration:none;
    text-transform:uppercase;
    transition:var(--transition);
}
.card-link i{ font-size:.72rem; transition:transform var(--transition); }
.card-link:hover{ color:var(--secondary-dark); }
.card-link:hover i{ transform:translateX(4px); }

.section-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-top:36px;
    color:var(--white);
    background:var(--gradient-accent);
    padding:12px 26px;
    border-radius:50px;
    font-family:var(--font-display);
    font-size:.85rem;
    font-weight:600;
    letter-spacing:.4px;
    text-decoration:none;
    text-transform:uppercase;
    box-shadow:var(--shadow-glow-blue);
    transition:var(--transition);
}
.section-link:hover{ transform:translateY(-3px); box-shadow:0 16px 34px rgba(47,111,174,.4); }
.section-link-wrap{ text-align:center; }
.split-text .section-link-wrap{ text-align:left; }

/* =============================================
   9. FIX: .service-card usado como <a> (enlaces a páginas)
   inicio.css lo diseñó para <div> (block por defecto);
   un <a> es inline por defecto y rompe el layout sin esto.
============================================= */
a.service-card{
    display:block;
    text-decoration:none;
    color:inherit;
    cursor:pointer;
}
a.service-card h3{ color:var(--text-light); }


/* =============================================
   11. FRASE ANCLA (narrativa central del sitio)
============================================= */
.narrative-band{
    padding:70px 0;
    background:var(--dark-bg);
    position:relative;
}
.narrative-band .container{
    max-width:820px;
    text-align:center;
}
.narrative-statement{
    font-family:var(--font-display);
    font-size:clamp(1.5rem, 3vw, 2.3rem);
    font-weight:600;
    line-height:1.4;
    color:var(--text-light);
    margin:0;
}
.narrative-statement strong{
    background:var(--gradient-primary);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}


/* =============================================
   13. HERO DE PÁGINA INTERNA (subpáginas de /adas/)
============================================= */
.page-hero{
    position:relative;
    background:var(--gradient-dark);
    padding:170px 0 90px;
    overflow:hidden;
    text-align:center;
}
.page-hero::before{
    content:'';
    position:absolute; inset:0; z-index:0; pointer-events:none;
    background:
        radial-gradient(circle at 15% 20%, rgba(214,40,40,.16), transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(47,111,174,.16), transparent 45%),
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size:auto, auto, 44px 44px, 44px 44px;
}
.page-hero .container{
    position:relative; z-index:1;
    max-width:760px;
}
.breadcrumb{
    font-size:.82rem;
    color:var(--text-light-soft);
    margin-bottom:20px;
}
.breadcrumb a{ color:var(--text-light-soft); text-decoration:none; }
.breadcrumb a:hover{ color:var(--accent-glow); }
.breadcrumb i{ font-size:.6rem; margin:0 8px; opacity:.5; }
.page-hero h1{
    font-family:var(--font-display);
    font-weight:700;
    letter-spacing:.3px;
    font-size:clamp(2rem, 4.5vw, 3.1rem);
    color:var(--white);
    margin-bottom:18px;
    line-height:1.15;
}
.page-hero .page-hero-badge{
    display:inline-flex; align-items:center; gap:8px;
    background:var(--gradient-primary);
    color:var(--white);
    padding:8px 18px;
    border-radius:50px;
    font-family:var(--font-display);
    font-size:.78rem;
    letter-spacing:1px;
    text-transform:uppercase;
    box-shadow:var(--shadow-glow-red);
    margin-bottom:22px;
}
.page-hero p{
    color:var(--text-light-soft);
    font-size:1.05rem;
    line-height:1.65;
    margin-bottom:32px;
}
.page-hero .hero-buttons{ justify-content:center; }

@media(max-width:768px){
    .page-hero{ padding:140px 0 70px; }
}


/* =============================================
   14. AJUSTE FINO DEL HERO PARA TÍTULOS LARGOS
============================================= */
.hero-title{
    line-height:1.08;
}

/* =============================================
   15. MOBILE MENU OVERLAY (better touch accessibility)
============================================= */
.nav-overlay{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.7);
    z-index:998;
    opacity:0;
    visibility:hidden;
    transition:var(--transition);
}
.nav-overlay.active{
    opacity:1;
    visibility:visible;
}

/* Mobile menu improvements for touch */
@media(max-width:768px){
    .nav-menu .nav-link{
        padding:16px 20px;
        font-size:1rem;
        min-height:48px;
        display:flex;
        align-items:center;
        border-bottom:1px solid rgba(255,255,255,.05);
    }
    .nav-menu .nav-link:hover{
        background:rgba(255,255,255,.05);
    }
    .nav-menu{
        padding:20px 0;
    }
}

/* =============================================
   16. STICKY NAVBAR (scroll effect)
============================================= */
.navbar.scrolled{
    background:rgba(10,10,15,.95);
    backdrop-filter:blur(10px);
    box-shadow:0 4px 20px rgba(0,0,0,.3);
    padding:10px 0;
}
.navbar.scrolled .logo-img{
    height:40px;
}
@media(max-width:768px){
    .navbar.scrolled{
        padding:8px 0;
    }
}

/* =============================================
   17. SCROLL BACK TO TOP BUTTON
============================================= */
.scroll-to-top{
    position:fixed;
    bottom:80px;
    right:20px;
    width:50px;
    height:50px;
    background:var(--gradient-primary);
    color:var(--white);
    border:none;
    border-radius:50%;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.2rem;
    box-shadow:var(--shadow-glow-red);
    opacity:0;
    visibility:hidden;
    transform:translateY(20px);
    transition:var(--transition);
    z-index:990;
}
.scroll-to-top.visible{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
}
.scroll-to-top:hover{
    transform:translateY(-5px);
    box-shadow:0 8px 25px rgba(214,40,40,.5);
}
@media(max-width:768px){
    .scroll-to-top{
        bottom:70px;
        right:15px;
        width:45px;
        height:45px;
        font-size:1rem;
    }
}

/* =============================================
   18. MACHINE PHOTO AND REPORT MOCKUP CONTAINERS
============================================= */
.machine-photo-container img,
.report-mockup-container img{
    max-width:100%;
    height:auto;
    object-fit:cover;
}
@media(max-width:768px){
    .machine-photo-container,
    .report-mockup-container{
        margin:24px 0 !important;
    }
}

/* =============================================
   19. IMPROVED SPACING FOR BETTER VISUAL BREATHING
============================================= */
.section-header{
    margin-bottom:48px;
}
.section-header .section-title{
    margin-bottom:16px;
}
.section-header .section-description{
    max-width:700px;
    margin:0 auto;
    line-height:1.6;
}

/* Better spacing for split content layouts */
.split-content{
    gap:80px;
}
@media(max-width:900px){
    .split-content{ gap:48px; }
}
@media(max-width:768px){
    .split-content{ gap:36px; }
}

/* Improved spacing for process steps */
.process-steps{
    gap:32px;
}
@media(max-width:900px){
    .process-steps{ gap:24px; }
}
@media(max-width:520px){
    .process-steps{ gap:20px; }
}

/* Better spacing for feature lists */
.feature-list{
    gap:32px;
}
@media(max-width:700px){
    .feature-list{ gap:24px; }
}

/* Improved spacing for service grids */
.services-grid{
    gap:32px;
}
@media(max-width:900px){
    .services-grid{ gap:24px; }
}
@media(max-width:768px){
    .services-grid{ gap:20px; }
}