/* ============================================
   VARIABLES
   ============================================ */
:root {
    --color-bg:           #FFFFFF;
    --color-surface:      #F7F8FA;
    --color-text:         #0D1B2A;
    --color-text-muted:   #5A6A7A;
    --color-accent:       #0C447C;
    --color-accent-light: #E8F0F9;
    --color-border:       #E2E8F0;
    --color-dark:         #0D1B2A;
    --color-dark-muted:   rgba(255,255,255,0.7);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --text-sm:     clamp(0.875rem, 1.8vw, 1rem);
    --text-base:   clamp(1rem, 2vw, 1.125rem);
    --text-lg:     clamp(1.125rem, 2.5vw, 1.375rem);
    --text-xl:     clamp(1.25rem, 3vw, 1.625rem);
    --text-2xl:    clamp(1.5rem, 4vw, 2.25rem);
    --text-3xl:    clamp(2rem, 5vw, 3rem);
    --text-metric: clamp(2.75rem, 7vw, 4.5rem);

    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    --radius:    8px;
    --radius-lg: 16px;

    --container-max:     1180px;
    --container-padding: clamp(1.25rem, 5vw, 2rem);

    --header-height: 64px;
    --transition:    0.2s ease;
    --shadow:        0 1px 3px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.06);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    font-size: var(--text-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ============================================
   LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ============================================
   TIPOGRAFÍA GLOBAL
   ============================================ */
.section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
    margin-bottom: var(--space-4);
}

.section-title--light { color: #FFFFFF; }

.section-sub {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    max-width: 640px;
    margin-bottom: var(--space-12);
    line-height: 1.7;
}

.section-sub--light { color: var(--color-dark-muted); }

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font);
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
    white-space: nowrap;
    text-decoration: none;
    border: 2px solid transparent;
}

.btn--sm  { font-size: var(--text-sm); padding: 0.5rem 1.125rem; }
.btn--lg  { font-size: var(--text-base); padding: 0.875rem 2rem; }

.btn--primary {
    background: var(--color-accent);
    color: #FFFFFF;
    border-color: var(--color-accent);
}
.btn--primary:hover {
    background: #0a3868;
    border-color: #0a3868;
    transform: translateY(-1px);
}

.btn--white {
    background: #FFFFFF;
    color: var(--color-accent);
    border-color: #FFFFFF;
}
.btn--white:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

.btn--outline-white {
    background: transparent;
    color: #FFFFFF;
    border-color: rgba(255,255,255,0.5);
}
.btn--outline-white:hover {
    background: rgba(255,255,255,0.1);
    border-color: #FFFFFF;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow);
}

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header__brand {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    padding-top: calc(var(--header-height) + var(--space-16));
    padding-bottom: 0;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse 80% 60% at 70% 0%, rgba(12,68,124,0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 100% 50%, rgba(12,68,124,0.04) 0%, transparent 60%);
}

.hero__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
    align-items: center;
    padding-bottom: var(--space-16);
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 680px;
}

.hero__headline {
    font-size: var(--text-3xl);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

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

.hero__sub {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 560px;
}

.hero__note {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: calc(-1 * var(--space-2));
}

.hero__photo-wrap {
    display: flex;
    justify-content: center;
}

.hero__photo {
    width: 280px;
    height: auto;
    object-fit: contain;
}

/* Stats bar */
.hero__stats-bar {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding-block: var(--space-6);
}

.hero__stats-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6) var(--space-8);
    align-items: center;
}

.hero__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-align: center;
}

.hero__stat-num {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: -0.02em;
    line-height: 1;
}

.hero__stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    max-width: 140px;
    line-height: 1.4;
}

.hero__stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
    display: none;
}

@media (min-width: 640px) {
    .hero__stat-divider { display: block; }
}

.hero__clients {
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-6);
    background: var(--color-surface);
}

.hero__clients .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.hero__clients-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.hero__clients-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-3) var(--space-6);
}

.hero__client-name {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
}

.hero__clients-sep {
    color: var(--color-border);
    font-size: var(--text-lg);
}

/* ============================================
   CÓMO FUNCIONA
   ============================================ */
.como-funciona {
    background: var(--color-surface);
    padding-block: var(--space-20);
}

.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.step {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.step__num {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    opacity: 0.25;
    letter-spacing: -0.03em;
}

.step__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.step__desc {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    line-height: 1.7;
}

.step__detail {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent);
    margin-top: auto;
}

/* ============================================
   CASOS DE ESTUDIO
   ============================================ */
.casos {
    background: var(--color-bg);
    padding-block: var(--space-20);
}

.casos__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-top: var(--space-4);
}

.casos__grid--4 {
    grid-template-columns: 1fr;
}

.caso-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    background: var(--color-bg);
    transition: box-shadow var(--transition), transform var(--transition);
}

.caso-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.caso-card--featured {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.caso-card__client {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.caso-card__metric {
    font-size: var(--text-metric);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    letter-spacing: -0.03em;
}

.caso-card__metric-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: calc(-1 * var(--space-2));
}

.caso-card__stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
    background: rgba(12, 68, 124, 0.05);
    border-radius: var(--radius);
}

.caso-card--featured .caso-card__stats {
    background: rgba(12, 68, 124, 0.08);
}

.caso-card__stats li {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.5;
}

.caso-card__stats li strong {
    color: var(--color-accent);
    font-weight: 700;
}

.caso-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
    flex: 1;
}

.caso-card__cta {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: gap var(--transition);
    margin-top: auto;
}

.caso-card__cta:hover {
    gap: var(--space-3);
}

.caso-card__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: auto;
}

.caso-card__cta--secondary {
    color: var(--color-text-muted);
    font-weight: 500;
}

.caso-card__cta--secondary:hover {
    color: var(--color-accent);
}

.caso-card__badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    width: fit-content;
}

/* ============================================
   DASHBOARD
   ============================================ */
.dashboard {
    background: var(--color-dark);
    padding-block: var(--space-20);
    text-align: center;
}

.dashboard .section-title,
.dashboard .section-sub {
    margin-inline: auto;
    text-align: center;
}

.dashboard__placeholder {
    margin-top: var(--space-8);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.dashboard__placeholder-inner {
    padding: var(--space-16) var(--space-8);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.dashboard__icon {
    color: rgba(255,255,255,0.3);
}

.dashboard__placeholder-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: #FFFFFF;
}

.dashboard__placeholder-desc {
    font-size: var(--text-base);
    color: var(--color-dark-muted);
    max-width: 520px;
    line-height: 1.7;
    text-align: center;
}

.dashboard__embed {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000;
}

.dashboard__embed iframe {
    display: block;
    width: 100%;
    min-height: 500px;
    border: none;
}

/* ============================================
   CONTACTO
   ============================================ */
.contacto {
    background: var(--color-accent);
    padding-block: var(--space-20);
    text-align: center;
}

.contacto__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.contacto__title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.contacto__desc {
    font-size: var(--text-base);
    color: rgba(255,255,255,0.8);
    max-width: 520px;
    line-height: 1.7;
}

.contacto__note {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.6);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--color-dark);
    padding-block: var(--space-12);
}

.site-footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    text-align: center;
}

.site-footer__name {
    font-size: var(--text-base);
    font-weight: 700;
    color: #FFFFFF;
}

.site-footer__desc,
.site-footer__markets {
    font-size: var(--text-sm);
    color: var(--color-dark-muted);
}

.site-footer .btn {
    margin-top: var(--space-4);
}

/* ============================================
   RESPONSIVE — TABLET (640px+)
   ============================================ */
@media (min-width: 640px) {
    .steps {
        grid-template-columns: 1fr 1fr;
    }

    .step:last-child {
        grid-column: 1 / -1;
        max-width: 480px;
        justify-self: center;
    }

    .casos__grid {
        grid-template-columns: 1fr 1fr;
    }

    .casos__grid--4 {
        grid-template-columns: 1fr 1fr;
    }

    .hero__clients-sep { display: inline; }
}

/* ============================================
   RESPONSIVE — DESKTOP (900px+)
   ============================================ */
@media (min-width: 900px) {
    .hero__inner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-16);
        padding-bottom: var(--space-20);
    }

    .hero__content {
        max-width: 600px;
        flex: 1;
    }

    .hero__photo-wrap {
        flex-shrink: 0;
    }

    .hero__photo {
        width: 340px;
    }

    .steps {
        grid-template-columns: repeat(3, 1fr);
    }

    .step:last-child {
        grid-column: auto;
        max-width: none;
        justify-self: auto;
    }

    .casos__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero__clients .container {
        flex-direction: row;
        justify-content: center;
    }
}

/* ============================================
   RESPONSIVE — LARGE DESKTOP (1200px+)
   ============================================ */
@media (min-width: 1200px) {
    .hero__photo { width: 380px; }
}

/* ============================================
   BOTÓN GHOST
   ============================================ */
.btn--ghost {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-border);
}
.btn--ghost:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

/* ============================================
   NAV EN HEADER
   ============================================ */
.site-nav {
    display: none;
    gap: var(--space-6);
}
.site-nav__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
}
.site-nav__link:hover { color: var(--color-text); }

@media (min-width: 768px) {
    .site-nav { display: flex; }
}

/* ============================================
   HERO — NUEVOS ELEMENTOS
   ============================================ */
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: 0.375rem 0.875rem;
    border-radius: 999px;
    width: fit-content;
}
.hero__badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    flex-shrink: 0;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
}

.hero__stack-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: calc(-1 * var(--space-2));
}

.stack-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
    letter-spacing: 0.03em;
}

.stack-tag--ai {
    background: var(--color-dark);
    color: #FFFFFF;
    border-color: var(--color-dark);
}

/* Tarjetas métricas flotantes */
.hero__photo-wrap {
    position: relative;
}

.hero__metric-card {
    display: none;
    position: absolute;
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    box-shadow: var(--shadow);
    flex-direction: column;
    gap: 2px;
}

.hero__metric-card--1 {
    bottom: 20%;
    left: -40px;
}

.hero__metric-card--2 {
    top: 20%;
    right: -30px;
}

.metric-card__num {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.metric-card__label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

@media (min-width: 1024px) {
    .hero__metric-card { display: flex; }
}

/* ============================================
   STACK TÉCNICO
   ============================================ */
.stack-section {
    background: var(--color-surface);
    padding-block: var(--space-20);
}

.stack-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

@media (min-width: 768px) {
    .stack-grid { grid-template-columns: repeat(3, 1fr); }
}

.stack-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    transition: box-shadow var(--transition), transform var(--transition);
}
.stack-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.stack-card__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #FFFFFF;
}
.stack-card__icon--gtm    { background: #246FDB; }
.stack-card__icon--ga4    { background: #E8710A; }
.stack-card__icon--meta   { background: #0866FF; }
.stack-card__icon--looker { background: #4285F4; }
.stack-card__icon--dl     { background: #0D1B2A; }
.stack-card__icon--wp     { background: #21759B; }
.stack-card__icon--el      { background: #E2202B; }
.stack-card__icon--seo     { background: #0C6B3E; }
.stack-card__icon--sf      { background: #FF6B35; }
.stack-card__icon--clarity { background: #5C2D91; }
.stack-card__icon--ahrefs  { background: #FF8C00; }
.stack-card__icon--ai      { background: #0D1B2A; }

.stack-card__title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
}

.stack-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================
   CASOS TÉCNICOS
   ============================================ */
.casos-tecnicos {
    background: var(--color-surface);
    padding-block: var(--space-20);
}

.casos-tec__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

@media (min-width: 768px) {
    .casos-tec__grid { grid-template-columns: 1fr 1fr; }
}

.caso-tec {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    transition: box-shadow var(--transition);
}

.caso-tec:hover {
    box-shadow: var(--shadow);
}

.caso-tec__tag {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    width: fit-content;
}

.caso-tec__title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.caso-tec__problema {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
    padding-left: var(--space-3);
    border-left: 2px solid #EF4444;
}

.caso-tec__accion {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
    padding-left: var(--space-3);
    border-left: 2px solid #22C55E;
}

.caso-tec__quote {
    font-size: var(--text-sm);
    font-style: italic;
    color: var(--color-text);
    background: var(--color-accent-light);
    border-left: 3px solid var(--color-accent);
    padding: var(--space-3) var(--space-4);
    border-radius: 0 var(--radius) var(--radius) 0;
    margin-top: auto;
    line-height: 1.6;
}

/* ============================================
   CONTACTO — DOS BOTONES
   ============================================ */
.contacto__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
}

/* ============================================
   ACCESIBILIDAD
   ============================================ */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}