/* ==========================================================================
   CASATEC · Sistema visual "Circuito Dorado"
   Base compartida por el portal (/) y la tienda (/ventas).
   ========================================================================== */

@font-face {
    font-family: 'Archivo';
    font-style: normal;
    font-weight: 100 900;
    font-stretch: 62% 125%;
    font-display: swap;
    src: url('../fonts/casatec/archivo-latin.woff2') format('woff2');
}

@font-face {
    font-family: 'Archivo';
    font-style: italic;
    font-weight: 100 900;
    font-stretch: 62% 125%;
    font-display: swap;
    src: url('../fonts/casatec/archivo-italic-latin.woff2') format('woff2');
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url('../fonts/casatec/jetbrains-mono-latin.woff2') format('woff2');
}

:root {
    color-scheme: dark;

    /* Marino del logo */
    --ink-950: #060B16;
    --ink-900: #0A1428;
    --ink-850: #0E1A31;
    --ink-800: #13213D;
    --ink-700: #1B2C4D;
    --line: #22324F;
    --line-soft: rgba(154, 166, 184, .14);

    /* Dorado del logo: único acento de acción */
    --gold-300: #FFD27A;
    --gold-400: #F5B83D;
    --gold-600: #C98A12;
    --gold-glow: rgba(245, 184, 61, .28);

    /* Plateado del logo */
    --silver-50: #F6F8FB;
    --silver-100: #E9EDF3;
    --silver-400: #9AA6B8;
    --silver-500: #7D8AA0;

    --ok: #3DD68C;
    --danger: #FF7A7A;
    --wa: #25D366;
    --paper: #F1F3F7;

    --f-display: 'Archivo', 'Inter', system-ui, sans-serif;
    --f-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --f-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

    --fs-12: .75rem;
    --fs-14: .875rem;
    --fs-16: 1rem;
    --fs-18: 1.125rem;
    --fs-22: 1.375rem;
    --fs-28: 1.75rem;
    --fs-40: clamp(2rem, 3.4vw, 2.5rem);
    --fs-56: clamp(2.4rem, 4.6vw, 3.5rem);
    --fs-hero: clamp(2.9rem, 6.4vw, 6.5rem);

    --s-1: 4px;
    --s-2: 8px;
    --s-3: 12px;
    --s-4: 16px;
    --s-6: 24px;
    --s-8: 32px;
    --s-12: 48px;
    --s-18: 72px;
    --s-28: 112px;

    --r-xs: 2px;
    --r-sm: 6px;
    --r-md: 10px;

    --ease: cubic-bezier(.2, .7, .1, 1);
    --t-fast: 160ms;
    --t-mid: 320ms;
    --t-slow: 700ms;

    --shell: 1240px;
    --gutter: clamp(16px, 4vw, 40px);
    --header-h: 76px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 16px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--ink-950);
    color: var(--silver-100);
    font-family: var(--f-body);
    font-size: var(--fs-16);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

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

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

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: var(--f-display);
    font-weight: 800;
    font-stretch: 108%;
    line-height: 1.02;
    letter-spacing: -.02em;
    color: var(--silver-50);
    text-wrap: balance;
}

p {
    margin: 0;
    text-wrap: pretty;
}

::selection {
    background: var(--gold-400);
    color: var(--ink-950);
}

:focus-visible {
    outline: 2px solid var(--gold-400);
    outline-offset: 3px;
    border-radius: var(--r-xs);
}

.shell {
    width: min(100% - (var(--gutter) * 2), var(--shell));
    margin-inline: auto;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    padding: 10px 16px;
    background: var(--gold-400);
    color: var(--ink-950);
    font-weight: 700;
    border-radius: var(--r-sm);
    transform: translateY(-150%);
    transition: transform var(--t-fast) var(--ease);
}

.skip-link:focus {
    transform: none;
}

.icon-sprite {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.ico {
    width: 1.15em;
    height: 1.15em;
    flex: none;
}

/* ---------- Tipografía utilitaria ---------- */

.mono {
    font-family: var(--f-mono);
    font-feature-settings: 'zero' 0;
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: var(--s-3);
    font-family: var(--f-mono);
    font-size: var(--fs-12);
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--gold-400);
}

.kicker b {
    color: var(--silver-400);
    font-weight: 500;
}

.lead {
    font-size: clamp(1.02rem, 1.3vw, 1.18rem);
    line-height: 1.7;
    color: var(--silver-400);
    max-width: 58ch;
}

/* ---------- Motivo: traza de circuito (sale del logo) ---------- */

/* La traza usa <use>: se anima con propiedades heredadas desde el <svg>. */
.trace {
    display: block;
    width: 120px;
    height: 16px;
    flex: none;
    overflow: visible;
    color: var(--gold-400);
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 1;
    stroke-dashoffset: 0;
}

.motion-ready [data-reveal] .trace {
    stroke-dashoffset: 1;
    transition: stroke-dashoffset 1.1s var(--ease) .2s;
}

.motion-ready [data-reveal].is-visible .trace {
    stroke-dashoffset: 0;
}

.sec-index {
    display: flex;
    align-items: center;
    gap: var(--s-3);
    margin-bottom: var(--s-6);
    font-family: var(--f-mono);
    font-size: var(--fs-12);
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--silver-400);
}

.sec-index span {
    color: var(--gold-400);
}

/* ---------- Botones ---------- */

.btn {
    --btn-bg: transparent;
    --btn-fg: var(--silver-50);
    --btn-line: var(--line);
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--s-2);
    min-height: 48px;
    padding: 0 22px;
    border: 1px solid var(--btn-line);
    border-radius: var(--r-sm);
    background: var(--btn-bg);
    color: var(--btn-fg);
    font-family: var(--f-display);
    font-size: var(--fs-14);
    font-weight: 700;
    font-stretch: 112%;
    letter-spacing: .01em;
    white-space: nowrap;
    transition:
        background-color var(--t-fast) var(--ease),
        border-color var(--t-fast) var(--ease),
        color var(--t-fast) var(--ease),
        transform var(--t-fast) var(--ease),
        box-shadow var(--t-mid) var(--ease);
}

.btn svg {
    width: 18px;
    height: 18px;
    flex: none;
    transition: transform var(--t-mid) var(--ease);
}

.btn:hover svg.ico-arrow {
    transform: translateX(3px);
}

.btn:active {
    transform: translateY(1px);
}

.btn--gold {
    --btn-bg: var(--gold-400);
    --btn-fg: var(--ink-950);
    --btn-line: var(--gold-400);
}

.btn--gold:hover {
    --btn-bg: var(--gold-300);
    --btn-line: var(--gold-300);
    box-shadow: 0 10px 30px -10px var(--gold-glow);
}

.btn--gold:active {
    --btn-bg: var(--gold-600);
}

.btn--line:hover {
    --btn-line: var(--silver-400);
    --btn-bg: rgba(233, 237, 243, .04);
}

.btn--wa svg {
    color: var(--wa);
}

.btn--sm {
    min-height: 40px;
    padding: 0 16px;
}

.btn:disabled {
    opacity: .45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ---------- Barra superior ---------- */

.topbar {
    position: relative;
    z-index: 41;
    border-bottom: 1px solid var(--line-soft);
    background: var(--ink-950);
    font-size: var(--fs-12);
    color: var(--silver-400);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--s-6);
    min-height: 36px;
    flex-wrap: wrap;
}

.topbar__inner > span {
    display: inline-flex;
    align-items: center;
    gap: var(--s-2);
}

.topbar__inner > span + span::before {
    content: '';
    width: 4px;
    height: 4px;
    margin-right: var(--s-4);
    border-radius: 50%;
    background: var(--gold-600);
}

.topbar a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--gold-400);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: rgba(245, 184, 61, .4);
    text-underline-offset: 3px;
}

.topbar a:hover {
    text-decoration-color: currentColor;
}

.topbar a svg {
    width: 12px;
    height: 12px;
}

/* ---------- Cabecera ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    border-bottom: 1px solid transparent;
    background: rgba(6, 11, 22, .72);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    transition: border-color var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}

.site-header.is-scrolled {
    border-bottom-color: var(--line-soft);
    background: rgba(6, 11, 22, .92);
}

.header__inner {
    display: flex;
    align-items: center;
    gap: var(--s-8);
    min-height: var(--header-h);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--s-3);
    flex: none;
}

.brand img {
    width: 150px;
    height: auto;
}

.brand__line {
    padding-left: var(--s-3);
    border-left: 1px solid var(--line);
    font-family: var(--f-mono);
    font-size: 10.5px;
    line-height: 1.35;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--silver-400);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--s-1);
    margin-left: auto;
}

.site-nav a:not(.btn) {
    position: relative;
    padding: 10px 12px;
    font-size: var(--fs-14);
    font-weight: 500;
    color: var(--silver-400);
    transition: color var(--t-fast) var(--ease);
}

.site-nav a:not(.btn)::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 4px;
    height: 1px;
    background: var(--gold-400);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-mid) var(--ease);
}

.site-nav a:not(.btn):hover,
.site-nav a[aria-current] {
    color: var(--silver-50);
}

.site-nav a:not(.btn):hover::after,
.site-nav a[aria-current]::after {
    transform: scaleX(1);
}

.site-nav .nav-store {
    color: var(--gold-400);
}

.site-nav .btn {
    margin-left: var(--s-2);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: transparent;
    place-items: center;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    margin: 2.5px auto;
    background: var(--silver-50);
    transition: transform var(--t-mid) var(--ease), opacity var(--t-fast);
}

.menu-toggle[aria-expanded='true'] span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
}

.menu-toggle[aria-expanded='true'] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded='true'] span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
}

@media (max-width: 1080px) {
    .menu-toggle {
        display: grid;
        align-content: center;
    }

    .site-nav {
        position: fixed;
        inset: var(--header-bottom, 112px) 0 auto 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--s-4) var(--gutter) var(--s-8);
        border-bottom: 1px solid var(--line);
        background: var(--ink-950);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease), visibility 0s linear var(--t-mid);
    }

    .site-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: none;
        transition-delay: 0s;
    }

    .site-nav a:not(.btn) {
        padding: 14px 0;
        border-bottom: 1px solid var(--line-soft);
        font-size: var(--fs-18);
    }

    .site-nav a:not(.btn)::after {
        display: none;
    }

    .site-nav .btn {
        margin: var(--s-4) 0 0;
    }

    body.menu-open {
        overflow: hidden;
    }
}

/* ---------- Columna de circuito (progreso de lectura, escritorio) ---------- */

.spine {
    position: fixed;
    left: max(12px, calc((100vw - var(--shell)) / 2 - 56px));
    top: 50%;
    z-index: 30;
    display: none;
    transform: translateY(-50%);
}

.spine__rail {
    position: absolute;
    left: 5px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: var(--line);
}

.spine__rail::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold-400);
    transform: scaleY(var(--progress, 0));
    transform-origin: top;
}

.spine ol {
    position: relative;
    display: grid;
    gap: 34px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.spine a {
    display: flex;
    align-items: center;
    gap: var(--s-3);
}

.spine i {
    width: 11px;
    height: 11px;
    border: 1.5px solid var(--silver-500);
    border-radius: 50%;
    background: var(--ink-950);
    transition: border-color var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.spine span {
    font-family: var(--f-mono);
    font-size: 10.5px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--silver-400);
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.spine span {
    padding: 3px 6px;
    border-radius: var(--r-xs);
    background: var(--ink-950);
}

.spine a:hover span,
.spine a:focus-visible span {
    opacity: 1;
    transform: none;
}

.spine a[aria-current] i {
    border-color: var(--gold-400);
    background: var(--gold-400);
    box-shadow: 0 0 0 4px rgba(245, 184, 61, .15);
}

@media (min-width: 1380px) {
    .spine {
        display: block;
    }
}

/* ---------- Revelado al hacer scroll ---------- */

.motion-ready [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.motion-ready [data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

/* ---------- Pie de página ---------- */

.site-footer {
    position: relative;
    margin-top: var(--s-28);
    border-top: 1px solid var(--line);
    background: var(--ink-950);
    font-size: var(--fs-14);
    color: var(--silver-400);
}

.footer__main {
    display: grid;
    grid-template-columns: 1.3fr repeat(3, 1fr);
    gap: var(--s-12);
    padding-block: var(--s-18) var(--s-12);
}

.footer__brand p {
    max-width: 34ch;
    margin-top: var(--s-6);
}

.footer__col {
    display: grid;
    align-content: start;
    gap: var(--s-3);
}

.footer__col strong {
    margin-bottom: var(--s-2);
    font-family: var(--f-mono);
    font-size: var(--fs-12);
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--silver-50);
}

.footer__col a {
    width: fit-content;
    transition: color var(--t-fast) var(--ease);
}

.footer__col a:hover {
    color: var(--gold-400);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    gap: var(--s-4);
    flex-wrap: wrap;
    padding-block: var(--s-6);
    border-top: 1px solid var(--line-soft);
    font-size: var(--fs-12);
}

.footer__bottom strong {
    color: var(--silver-100);
    font-weight: 600;
}

@media (max-width: 860px) {
    .footer__main {
        grid-template-columns: 1fr 1fr;
    }

    .footer__brand {
        grid-column: 1 / -1;
    }
}

/* ---------- WhatsApp flotante ---------- */

.whatsapp-float {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 35;
    display: inline-flex;
    align-items: center;
    gap: var(--s-3);
}

.whatsapp-float span {
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: var(--ink-900);
    font-size: var(--fs-12);
    font-weight: 600;
    color: var(--silver-100);
    opacity: 0;
    transform: translateX(6px);
    transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
    pointer-events: none;
}

.whatsapp-float:hover span,
.whatsapp-float:focus-visible span {
    opacity: 1;
    transform: none;
}

.whatsapp-float i {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--wa);
    color: #fff;
    box-shadow: 0 12px 30px -8px rgba(37, 211, 102, .55);
    transition: transform var(--t-mid) var(--ease);
}

.whatsapp-float:hover i {
    transform: scale(1.06);
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
}

/* ---------- Movimiento reducido ---------- */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        transition-delay: 0s !important;
    }

    .motion-ready [data-reveal] {
        opacity: 1;
        transform: none;
    }

    .motion-ready [data-reveal] .trace {
        stroke-dashoffset: 0;
    }
}