/* ==========================================================================
   SEBASOFT Landing Page v1 - Estilos
   Identidad: negro + blanco + naranja (tomado del logo oficial: #EC671C)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variables
   -------------------------------------------------------------------------- */
:root {
    /* Colores de marca */
    --color-black: #0B0B0B;
    --color-white: #FFFFFF;
    --color-orange: #EC671C;        /* Naranja exacto del logo */
    --color-orange-hover: #F27E3B;
    --color-orange-text: #B8500C;   /* Naranja oscurecido solo para texto pequeño sobre fondos claros (contraste AA) */

    /* Neutros de apoyo (derivados del negro y el blanco) */
    --color-black-soft: #151515;
    --color-border-dark: #2A2A2A;
    --color-text-muted-dark: #B5B5B5;  /* Texto secundario sobre negro */
    --color-gray-50: #F6F6F6;
    --color-border-light: #E4E4E4;
    --color-text-muted: #555555;       /* Texto secundario sobre blanco */

    /* Tipografía (fuentes del sistema: sin dependencias externas) */
    --font-base: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;

    /* Espaciado y medidas */
    --container: 1160px;
    --gutter: 24px;
    --section-y: 96px;
    --header-h: 76px;
    --radius: 10px;
    --radius-pill: 999px;

    --transition: 0.2s ease;
}

/* --------------------------------------------------------------------------
   2. Reset / base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-base);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-black);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

img,
svg {
    display: block;
    max-width: 100%;
}

h1, h2, h3, p, ul, ol {
    margin: 0;
}

ul, ol {
    padding: 0;
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}

:focus-visible {
    outline: 2px solid var(--color-orange);
    outline-offset: 3px;
}

section[id] {
    scroll-margin-top: var(--header-h);
}

/* --------------------------------------------------------------------------
   3. Utilidades y componentes comunes
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.accent {
    color: var(--color-orange);
}

.eyebrow {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-orange);
    margin-bottom: 14px;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    border-radius: var(--radius-pill);
    transition: background-color var(--transition), transform var(--transition);
}

.btn-primary {
    background: var(--color-orange);
    color: var(--color-black);          /* Negro sobre naranja: mejor contraste que blanco */
}

.btn-primary:hover {
    background: var(--color-orange-hover);
    transform: translateY(-1px);
}

.btn-sm {
    font-size: 0.9375rem;
    padding: 11px 20px;
}

.btn-lg {
    font-size: 1.0625rem;
    padding: 17px 32px;
    min-height: 56px;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--color-white);
    padding: 8px 0;
    border-bottom: 1px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.link-arrow::after {
    content: "→";
    color: var(--color-orange);
}

.link-arrow:hover {
    border-bottom-color: var(--color-orange);
}

/* Secciones */
.section {
    padding: var(--section-y) 0;
}

.section-light {
    background: var(--color-white);
}

.section-muted {
    background: var(--color-gray-50);
}

.section-dark {
    background: var(--color-black);
    color: var(--color-white);
}

.section-header {
    max-width: 680px;
    margin-bottom: 56px;
}

.section-title {
    font-size: clamp(1.875rem, 3.5vw, 2.625rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.section-lead {
    margin-top: 18px;
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* Texto de acento sobre fondos claros: mismo tono, más oscuro para legibilidad */
.section-light .eyebrow,
.section-muted .eyebrow {
    color: var(--color-orange-text);
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-black);
    border-bottom: 1px solid var(--color-border-dark);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
}

/* El PNG del logo tiene margen transparente propio; el margen negativo
   compensa ese espacio sin recortar ni alterar el archivo. */
.brand {
    display: inline-flex;
    flex-shrink: 0;
}

.brand img {
    width: 96px;
    height: 96px;
    max-width: none;   /* Evita que el logo se deforme: conserva su proporción 1:1 */
    margin: -10px -14px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted-dark);
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--color-orange);
}

/* Botón de menú (solo móvil) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: 0;
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   5. Hero
   -------------------------------------------------------------------------- */
.hero {
    background: var(--color-black);
    color: var(--color-white);
    padding: 104px 0 112px;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.hero-text {
    margin-top: 24px;
    max-width: 560px;
    font-size: 1.1875rem;
    color: var(--color-text-muted-dark);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px 28px;
    margin-top: 40px;
}

.hero-panel {
    background: var(--color-black-soft);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius);
    padding: 32px;
}

.hero-panel-title {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted-dark);
    margin-bottom: 8px;
}

.reduce-list li {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    font-size: 1.0625rem;
    font-weight: 500;
    border-bottom: 1px solid var(--color-border-dark);
}

.reduce-list li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.reduce-list li::before {
    content: "";
    flex-shrink: 0;
    width: 14px;
    height: 2px;
    background: var(--color-orange);
}

/* --------------------------------------------------------------------------
   6. Servicios
   -------------------------------------------------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    padding: 32px 28px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    background: var(--color-white);
    transition: border-color var(--transition);
}

.service-card:hover {
    border-color: var(--color-orange);
}

.service-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 24px;
    fill: none;
    stroke: var(--color-orange);
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.service-title {
    font-size: 1.1875rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 10px;
}

.service-text {
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   7. Cómo trabajamos
   -------------------------------------------------------------------------- */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.step {
    padding-top: 24px;
    border-top: 2px solid var(--color-black);
}

.step-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--color-orange);
    margin-bottom: 20px;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-text {
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   8. Mensaje diferencial
   -------------------------------------------------------------------------- */
.statement {
    max-width: 900px;
}

.statement-title {
    font-size: clamp(1.875rem, 4.2vw, 3.25rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.025em;
}

.statement-text {
    margin-top: 28px;
    max-width: 640px;
    font-size: 1.1875rem;
    color: var(--color-text-muted-dark);
    padding-left: 20px;
    border-left: 3px solid var(--color-orange);
}

/* --------------------------------------------------------------------------
   9. CTA final
   -------------------------------------------------------------------------- */
.cta {
    max-width: 760px;
    text-align: center;
}

.cta-title {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.cta-text {
    margin: 20px auto 40px;
    max-width: 540px;
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   10. Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-black);
    color: var(--color-text-muted-dark);
    padding: 48px 0;
    border-top: 1px solid var(--color-border-dark);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px 32px;
    font-size: 0.9375rem;
}

.footer-text {
    flex: 1;
    min-width: 220px;
}

/* --------------------------------------------------------------------------
   11. Botón flotante de WhatsApp
   -------------------------------------------------------------------------- */
.whatsapp-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 90;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px 14px 18px;
    background: var(--color-orange);
    color: var(--color-black);
    font-weight: 700;
    border-radius: var(--radius-pill);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    transition: background-color var(--transition), transform var(--transition);
}

.whatsapp-float:hover {
    background: var(--color-orange-hover);
    transform: translateY(-2px);
}

.whatsapp-float svg {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */

/* Tablet */
@media (max-width: 1024px) {
    .services-grid,
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        gap: 40px 32px;
    }
}

/* Tablet vertical */
@media (max-width: 880px) {
    :root {
        --section-y: 72px;
    }

    .hero {
        padding: 72px 0 80px;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    /* Navegación móvil */
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 8px var(--gutter) 24px;
        background: var(--color-black);
        border-bottom: 1px solid var(--color-border-dark);
        display: none;
    }

    .site-nav.is-open {
        display: flex;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 14px 0;
        font-size: 1.0625rem;
        color: var(--color-white);
        border-bottom: 1px solid var(--color-border-dark);
    }

    .site-nav .btn {
        margin-top: 16px;
        padding: 15px 20px;
        font-size: 1rem;
    }
}

/* Móvil */
@media (max-width: 560px) {
    :root {
        --gutter: 20px;
        --section-y: 64px;
        --header-h: 68px;
    }

    .brand img {
        width: 84px;
        height: 84px;
        margin: -8px -12px;
    }

    .hero-text {
        font-size: 1.0625rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .hero-actions .link-arrow {
        justify-content: center;
    }

    .btn-lg {
        width: 100%;
        padding: 18px 16px;
    }

    .hero-panel {
        padding: 24px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .services-grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .whatsapp-float {
        right: 16px;
        bottom: 16px;
        padding: 16px;
    }

    .whatsapp-float-label {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
        padding-bottom: 64px;  /* espacio para el botón flotante */
    }
}

/* Accesibilidad: reducir movimiento */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        transition: none !important;
    }
}