/* ═══════════════════════════════════════════
           CSS VARIABLES — PATITAS DESIGN SYSTEM
        ═══════════════════════════════════════════ */
:root {
    --bg-deep: #0a0e17;
    --bg-surface: #121a2b;
    --bg-card: #1a2340;
    --bg-card-hover: #1f2b4d;
    --patitas-red: #e74c3c;
    --patitas-red-glow: rgba(231, 76, 60, 0.35);
    --multimeter-yellow: #f1c40f;
    --yellow-glow: rgba(241, 196, 15, 0.25);
    --circuit-blue: #004b8d;
    --circuit-blue-light: #1e3a5f;
    --ocean-blue: #2980b9;
    --sky-blue: #aed6f1;
    --orange: #e67e22;
    --orange-deep: #d35400;
    --green: #2ecc71;
    --text-primary: #ecf0f1;
    --text-muted: #7f8c8d;
    --text-dim: #546a7b;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(241, 196, 15, 0.2);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --font-display: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--circuit-blue) var(--bg-deep);
}

body {
    font-family: var(--font-display);
    background: var(--bg-deep);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ═══════════════════════════════════════════
           AMBIENT BACKGROUND EFFECTS
        ═══════════════════════════════════════════ */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(0, 75, 141, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 75, 141, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
}

.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(180px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

.bg-glow--yellow {
    background: var(--multimeter-yellow);
    top: -200px;
    right: -100px;
    opacity: 0.08;
}

.bg-glow--red {
    background: var(--patitas-red);
    bottom: -300px;
    left: -200px;
    opacity: 0.06;
}

.bg-glow--blue {
    background: var(--circuit-blue);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.07;
}

/* ═══════════════════════════════════════════
           NAVIGATION
        ═══════════════════════════════════════════ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    padding: 0 clamp(16px, 4vw, 48px);
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(55, 61, 75, 0.72);
    backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--border-subtle);
    overflow: visible;
    box-shadow: 0 0 15px rgba(241, 196, 15, 0.6),
        0 0 30px rgba(241, 196, 15, 0.4),
        0 0 50px rgba(241, 196, 15, 0.2);
    /* permite que el submenú de Narratrónica se muestre */
    transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        background 0.3s, box-shadow 0.3s,
        border-color 0.3s;
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.95);
    box-shadow: 0 4px 20px rgba(241, 196, 15, 0.35), 0 0 35px rgba(241, 196, 15, 0.2);
}

/* ── NAVBAR AUTO-HIDE (simulator mode) ───── */

.navbar.sim-collapsed {
    height: 5px;
    overflow: hidden;
    /* recorta el contenido solo al colapsar en el simulador */
    border-bottom: 2px solid var(--multimeter-yellow);
    background: rgba(10, 14, 23, 0.6);
    box-shadow: 0 0 20px var(--yellow-glow);
    pointer-events: none;
    /* let the hover-zone handle it */
}

.navbar.sim-collapsed * {
    opacity: 0;
    transition: opacity 0.15s ease;
}

.navbar.sim-expanded {
    height: 50px;
    pointer-events: auto;
}

.navbar.sim-expanded * {
    opacity: 1;
    transition: opacity 0.25s ease 0.1s;
}

/* Invisible hover zone at top of screen to trigger expand */
.nav-hover-zone {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 26px;
    /* algo más alto para tocar fácil en tablet */
    z-index: 10000;
    display: none;
    cursor: default;
}

.nav-hover-zone.active {
    display: block;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    cursor: pointer;
}

.nav-brand svg {
    flex-shrink: 0;
}

.nav-brand-text {
    font-weight: 800;
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--multimeter-yellow), var(--patitas-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.nav-brand-version {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    margin-left: -4px;
    margin-top: 4px;
}

.nav-links {
    display: flex;
    gap: 4px;
    list-style: none;
    align-items: center;
}

.nav-link {
    padding: 8px 13px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: #fff;
    background: rgba(241, 196, 15, 0.15);
    text-shadow: 0 0 8px rgba(241, 196, 15, 1),
        0 0 20px rgba(241, 196, 15, 0.8),
        0 0 40px rgba(241, 196, 15, 0.4);
    box-shadow: 0 0 10px rgba(241, 196, 15, 0.5),
        0 0 25px rgba(241, 196, 15, 0.35),
        0 0 50px rgba(241, 196, 15, 0.2),
        0 0 80px rgba(241, 196, 15, 0.1),
        inset 0 0 15px rgba(241, 196, 15, 0.12);
    transform: scale(1.08);
}

.nav-link.active {
    color: var(--multimeter-yellow);
    background: rgba(241, 196, 15, 0.15);
    text-shadow: 0 0 15px rgba(241, 196, 15, 1);
    box-shadow: 0 0 12px rgba(241, 196, 15, 0.2) inset;
}

.nav-cta {
    padding: 8px 20px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--orange), var(--orange-deep));
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(230, 126, 34, 0.5);
}

/* Mobile menu */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    border-radius: 2px;
    transition: 0.3s;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(10, 14, 23, 0.97);
        backdrop-filter: blur(20px);
        padding: 16px;
        gap: 4px;
        border-bottom: 1px solid var(--border-subtle);
        transform: translateY(-120%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .nav-link {
        padding: 14px 18px;
        font-size: 1rem;
    }
}

/* ── Narratrónica dropdown ── */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.nav-caret {
    font-size: 0.65em;
    opacity: 0.75;
    transition: transform 0.25s ease;
}

.nav-dropdown.open .nav-caret {
    transform: rotate(180deg);
}

.nav-submenu {
    display: none;
    position: absolute;
    top: 100%;
    padding-top: 6px;
    left: 0;
    min-width: 220px;
    list-style: none;
    padding: 8px;
    margin: 0;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), 0 0 22px rgba(241, 196, 15, 0.08);
    z-index: 1200;
}

.nav-dropdown.open .nav-submenu,
.nav-dropdown:hover .nav-submenu {
    display: block;
    animation: narraFade 0.2s ease;
}

@keyframes narraFade {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-submenu li {
    list-style: none;
    margin: 0;
}

.nav-submenu .nav-link {
    display: block;
    padding: 11px 14px;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .nav-submenu {
        position: static;
        display: block;
        background: transparent;
        border: none;
        box-shadow: none;
        backdrop-filter: none;
        padding: 2px 0 6px 14px;
        min-width: 0;
    }

    .nav-dropdown .nav-caret {
        display: none;
    }
}

/* ═══════════════════════════════════════════
           PAGE SECTIONS (SPA-like)
        ═══════════════════════════════════════════ */
.page {
    display: none;
    min-height: 100vh;
    padding-top: 50px;
    position: relative;
    z-index: 1;
}

.page.active {
    display: block;
}

.page--simulator {
    padding-top: 50px;
    display: none;
    transition: padding-top 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.page--simulator.nav-hidden {
    padding-top: 5px;
}

.page--simulator.active {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* ═══════════════════════════════════════════
           HOME — HERO SECTION
        ═══════════════════════════════════════════ */
.hero {
    min-height: calc(100vh - 50px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px clamp(20px, 6vw, 80px) 30px;
    position: relative;
    overflow: hidden;
}

/* ── Hero video background ──────────────── */
.hero-video-wrap {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(900px, 94vw);
    aspect-ratio: 16/9;
    border-radius: 0 0 24px 24px;
    overflow: hidden;
    opacity: 0.32;
    filter: blur(0.5px) saturate(1.4) brightness(1.1);
    z-index: 0;
    pointer-events: none;
    mask-image: linear-gradient(to bottom, black 30%, transparent 95%);
    -webkit-mask-image: linear-gradient(to bottom, black 30%, transparent 95%);
}

.hero-video-wrap video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    display: block;
}

.hero-video-wrap video.active {
    opacity: 1;
}

/* Glowing border effect around video area */
.hero-video-wrap::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 0 0 26px 26px;
    border: 1px solid rgba(241, 196, 15, 0.12);
    border-top: none;
    pointer-events: none;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 40%, rgba(0, 75, 141, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

/* All hero direct children above video */
.hero>*:not(.hero-video-wrap) {
    position: relative;
    z-index: 2;
}

.hero-mascot {
    position: fixed;
    bottom: 30px;
    right: 30px;
    margin-bottom: 0;
    z-index: 9999;
    animation: mascotFloat 4s ease-in-out infinite;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.4));
    transition: opacity 0.3s;
}

@keyframes mascotFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-12px);
    }
}

.mascot-body {
    width: 80px;
    height: 90px;
    background: var(--patitas-red);
    border-radius: 40px 40px 10px 10px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow:
        inset -8px -10px 20px rgba(0, 0, 0, 0.25),
        0 0 40px var(--patitas-red-glow),
        0 0 80px rgba(231, 76, 60, 0.15);
}

.mascot-eye {
    width: 22px;
    height: 22px;
    background: #fff;
    border-radius: 50%;
    margin: 0 7px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.4);
    position: relative;
    animation: mascotBlink 3s infinite;
}

.mascot-eye::after {
    content: '';
    position: absolute;
    width: 9px;
    height: 9px;
    background: #222;
    border-radius: 50%;
    top: 6.5px;
    left: 6.5px;
    transform: translate(var(--eye-x, 0px), var(--eye-y, 0px));
    transition: transform 0.1s ease-out;
}

@keyframes mascotBlink {

    0%,
    90%,
    100% {
        transform: scaleY(1);
    }

    95% {
        transform: scaleY(0.1);
    }
}

.mascot-smile {
    position: absolute;
    bottom: 18px;
    width: 26px;
    height: 13px;
    border-bottom: 4px solid #fff;
    border-radius: 50%;
    animation: mascotSmileAnim 3s infinite;
}

@keyframes mascotSmileAnim {

    0%,
    90%,
    100% {
        transform: scale(1);
        border-bottom-width: 4px;
    }

    95% {
        transform: scaleX(1.7) scaleY(1.5) translateY(-4px);
        border-bottom-width: 8px;
    }
}

.mascot-legs {
    display: flex;
    justify-content: space-between;
    width: 56px;
    margin: -3px auto 0;
}

.mascot-leg {
    width: 8px;
    background: #bdc3c7;
    border-radius: 4px;
}

.mascot-leg--long {
    height: 36px;
}

.mascot-leg--short {
    height: 26px;
}

.mascot-shoe {
    width: 20px;
    height: 10px;
    border-radius: 5px;
    margin-top: -2px;
    margin-left: -6px;
}

.mascot-shoe--red {
    background: var(--patitas-red);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
}

.mascot-shoe--black {
    background: #111;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
}

/* Hero text */
.hero-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--multimeter-yellow);
    background: rgba(241, 196, 15, 0.1);
    border: 1px solid rgba(241, 196, 15, 0.2);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 24px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.4rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--multimeter-yellow) 0%, var(--orange) 50%, var(--patitas-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 24px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-primary {
    padding: 14px 36px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--orange), var(--orange-deep));
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: transform 0.25s, box-shadow 0.25s;
    box-shadow: 0 6px 25px rgba(230, 126, 34, 0.35);
    text-decoration: none;
    font-family: var(--font-display);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 40px rgba(230, 126, 34, 0.5);
}

.btn-secondary {
    padding: 14px 36px;
    border-radius: var(--radius-xl);
    background: transparent;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
    cursor: pointer;
    transition: all 0.25s;
    text-decoration: none;
    font-family: var(--font-display);
}

.btn-secondary:hover {
    border-color: var(--multimeter-yellow);
    color: var(--multimeter-yellow);
    background: rgba(241, 196, 15, 0.05);
}

/* ═══════════════════════════════════════════
           FEATURE CARDS (QUÉ ES / QUÉ NO ES)
        ═══════════════════════════════════════════ */
.features-section {
    padding: 80px clamp(20px, 6vw, 80px);
    max-width: 1200px;
    margin: 0 auto;
}

.features-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.features-section .section-sub {
    text-align: center;
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto 56px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-col h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-col h3 .icon-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.icon-circle--green {
    background: rgba(46, 204, 113, 0.15);
    color: var(--green);
}

.icon-circle--red {
    background: rgba(231, 76, 60, 0.15);
    color: var(--patitas-red);
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.feature-list li {
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    font-size: 0.95rem;
    line-height: 1.6;
    transition: transform 0.2s, border-color 0.2s;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feature-list li:hover {
    transform: translateX(4px);
    border-color: var(--border-accent);
}

.feature-list li .li-icon {
    flex-shrink: 0;
    font-size: 1.1rem;
    margin-top: 1px;
}

.patitas-accordion {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: 10px;
    transition: all 0.3s ease;
    align-self: start;
}

.patitas-accordion summary {
    padding: 20px 24px;
    font-size: 1.15rem;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-primary);
    transition: background 0.2s;
}

.patitas-accordion summary::-webkit-details-marker {
    display: none;
}

.patitas-accordion summary::after {
    content: '▼';
    font-size: 0.9rem;
    color: var(--multimeter-yellow);
    transition: transform 0.3s ease;
}

.patitas-accordion[open] summary::after {
    transform: rotate(180deg);
}

.patitas-accordion summary:hover {
    background: rgba(255, 255, 255, 0.04);
}

.patitas-accordion .feature-col {
    padding: 0 24px 24px;
    border-top: 1px solid var(--border-subtle);
    margin-top: 0;
    padding-top: 24px;
}

/* ═══════════════════════════════════════════
           TECH SPECS STRIP
        ═══════════════════════════════════════════ */
.tech-strip {
    padding: 60px clamp(20px, 6vw, 80px);
    background: linear-gradient(180deg, transparent, rgba(0, 75, 141, 0.06), transparent);
}

.tech-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.tech-card {
    text-align: center;
    padding: 28px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    transition: border-color 0.3s, transform 0.3s;
}

.tech-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.tech-card .tech-num {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--multimeter-yellow), var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tech-card .tech-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* ═══════════════════════════════════════════
           SIMULATOR PAGE
        ═══════════════════════════════════════════ */
.sim-frame {
    flex: 1;
    width: 100%;
    border: none;
}

/* ═══════════════════════════════════════════
           CIRCUITS PAGE
        ═══════════════════════════════════════════ */
.section-page {
    padding: 30px clamp(20px, 6vw, 80px) 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-page h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.section-page .page-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 1000px;
    margin-bottom: 12px;
}

.circuits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.circuit-card {
    background: var(--bg-card);
    position: relative;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    /* For image header rounded corners */
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
    display: flex;
    flex-direction: column;
}

.circuit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 240px;
    background: linear-gradient(to bottom, #624F06, #F1C40F);
    pointer-events: none;
    z-index: 0;
}

.circuit-card>* {
    position: relative;
    z-index: 1;
}

.circuit-card-img {
    width: 200px;
    height: 200px;
    margin: 24px auto 0 auto;
    border-radius: 50%;
    object-fit: cover;
    object-position: center;
    background: #fff;
    border: 2px solid #FFD700;
    /* Amarillo brillante */
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.6), 0 0 30px rgba(255, 215, 0, 0.3);
    display: block;
}

.circuit-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex: 1;
}

.circuit-card:hover {
    transform: translateY(-4px);
    border-color: var(--multimeter-yellow);
    box-shadow: 0 8px 30px rgba(241, 196, 15, 0.08);
    cursor: pointer;
}

.circuit-card .card-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: #F1C40F;
    /* Amarillo */
    background: #AA8A0A;
    /* Marrón */
    padding: 4px 10px;
    border-radius: 100px;
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
}

.circuit-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.circuit-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
}

.circuit-card-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}

.circuit-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ocean-blue);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s, gap 0.2s;
    padding: 8px 12px;
    background: rgba(41, 128, 185, 0.1);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.circuit-card .card-link:hover {
    color: var(--sky-blue);
    background: rgba(41, 128, 185, 0.2);
    gap: 12px;
}

.circuit-card .card-link svg {
    transition: transform 0.2s;
}

.circuit-card .card-link:hover svg {
    transform: translateX(3px);
}

/* ═══════════════════════════════════════════
           VIDEOS PAGE
        ═══════════════════════════════════════════ */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.video-card:hover {
    transform: translateY(-4px);
    border-color: var(--patitas-red);
    box-shadow: 0 8px 30px rgba(231, 76, 60, 0.1);
}

.video-card .video-embed {
    width: 100%;
    aspect-ratio: 16/9;
    border: none;
}

.video-card .video-info {
    padding: 20px;
}

.video-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.video-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* ═══════════════════════════════════════════
           PROGRAMMING PAGE
        ═══════════════════════════════════════════ */
.prog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.prog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.prog-card:hover {
    transform: translateY(-4px);
    border-color: var(--green);
    box-shadow: 0 8px 30px rgba(46, 204, 113, 0.1);
}

.prog-card .card-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 100px;
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.prog-card .card-tag--blockly {
    color: var(--green);
    background: rgba(46, 204, 113, 0.1);
}

.prog-card .card-tag--advanced {
    color: var(--orange);
    background: rgba(230, 126, 34, 0.1);
}

.prog-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.prog-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
}

.prog-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--green);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s, gap 0.2s;
}

.prog-card .card-link:hover {
    color: #58d68d;
    gap: 12px;
}

/* Blockly icon in cards */
.prog-card .blockly-preview {
    height: 60px;
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.06), rgba(241, 196, 15, 0.04));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    overflow: hidden;
}

.block-piece {
    height: 22px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: #fff;
    font-weight: 600;
    white-space: nowrap;
}

.block-piece--blue {
    background: #5b80a5;
}

.block-piece--green {
    background: #5ba55b;
}

.block-piece--yellow {
    background: #c4a900;
}

.block-piece--purple {
    background: #8b5ba5;
}

.block-piece--orange {
    background: #c47a00;
}

/* ═══════════════════════════════════════════
           FEEDBACK PAGE
        ═══════════════════════════════════════════ */
.feedback-container {
    padding: 100px clamp(20px, 6vw, 80px) 80px;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.feedback-container h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 12px;
}

.feedback-container .page-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 40px;
}

.form-frame-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.form-frame-wrapper iframe {
    width: 100%;
    height: 1100px;
    border: none;
}

/* ═══════════════════════════════════════════
           FOOTER
        ═══════════════════════════════════════════ */
.site-footer {
    padding: 40px clamp(20px, 6vw, 80px);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.site-footer a {
    color: var(--text-muted);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--multimeter-yellow);
}

/* ═══════════════════════════════════════════
           SCROLL REVEAL ANIMATION
        ═══════════════════════════════════════════ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* stagger children */
.stagger>* {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible>*:nth-child(1) {
    transition-delay: 0.05s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(2) {
    transition-delay: 0.12s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(3) {
    transition-delay: 0.19s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(4) {
    transition-delay: 0.26s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(5) {
    transition-delay: 0.33s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(6) {
    transition-delay: 0.40s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(7) {
    transition-delay: 0.47s;
    opacity: 1;
    transform: translateY(0);
}

.stagger.visible>*:nth-child(8) {
    transition-delay: 0.54s;
    opacity: 1;
    transform: translateY(0);
}

/* ═══════════════════════════════════════════
           EMPTY STATE (for placeholder sections)
        ═══════════════════════════════════════════ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-dim);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 1rem;
}

/* ═══════════════════════════════════════════
           INSTRUCTION CALLOUT
        ═══════════════════════════════════════════ */
.callout {
    background: rgba(241, 196, 15, 0.06);
    border: 1px dashed rgba(241, 196, 15, 0.25);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 32px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.callout code {
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.06);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.82rem;
    color: var(--multimeter-yellow);
}

/* ═══════════════════════════════════════════
           RESPONSIVE
        ═══════════════════════════════════════════ */
@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

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

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

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

    .hero h1 {
        font-size: 2rem;
    }
}

/* ═══════════════════════════════════════════
           SIMULATOR LOADER
        ═══════════════════════════════════════════ */
.sim-loader {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-deep);
    transition: opacity 0.5s ease;
}

.sim-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-subtle);
    border-top-color: var(--multimeter-yellow);
    border-radius: 50%;
    animation: loaderSpin 1s linear infinite;
}

@keyframes loaderSpin {
    to {
        transform: rotate(360deg);
    }
}

/* ═══════════════════════════════════════════
           ROADMAP
        ═══════════════════════════════════════════ */
.roadmap-image-container {
    width: 100%;
    max-width: 1000px;
    /* Alargado */
    margin: 0 auto 3rem auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    background-color: rgba(0, 0, 0, 0.2);
    /* Fondo sutil para el espacio libre */
}

.roadmap-image {
    width: 100%;
    height: 350px;
    /* Achicado en alto (banner) */
    object-fit: contain;
    /* Muestra toda la imagen sin recortar */
    object-position: center center;
    display: block;
    transition: transform 0.5s ease;
}

.roadmap-image-container:hover .roadmap-image {
    transform: scale(1.02);
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: linear-gradient(to bottom, var(--circuit-blue), var(--patitas-red));
    opacity: 0.5;
    z-index: 0;
}

.roadmap-item {
    display: flex;
    gap: 20px;
    position: relative;
    z-index: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.roadmap-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--border-accent);
}

.roadmap-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 2px solid var(--circuit-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--multimeter-yellow);
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(0, 75, 141, 0.5);
    margin-left: -6px;
    /* align with the timeline line */
}

.roadmap-content h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.roadmap-content p {
    color: var(--text-dim);
    line-height: 1.6;
    font-size: 0.95rem;
}

@media (max-width: 600px) {
    .roadmap-timeline::before {
        left: 20px;
    }

    .roadmap-item {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }

    .roadmap-number {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        margin-left: -5px;
    }
}

/* ═══════════════════════════════════════════
           LESSON MODAL
        ═══════════════════════════════════════════ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.05);
    /* Very exaggerated start */
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
}

.modal-overlay.active .modal-container {
    transform: scale(1);
}

.modal-header {
    position: sticky;
    top: 0;
    background: rgba(26, 35, 64, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--patitas-red);
}

.modal-body {
    padding: 30px;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.modal-body h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.modal-body p {
    margin-bottom: 1.5rem;
}

.modal-body img.modal-img-full {
    max-width: 100%;
    /* In grid, take full cell width */
    max-height: 350px;
    width: auto;
    height: 100%;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    object-fit: contain;
    background: rgba(0, 0, 0, 0.1);
}

.modal-img-cover {
    object-fit: cover !important;
    width: 100% !important;
}

.modal-img-stretch {
    object-fit: fill !important;
    /* Force stretch horizontally and vertically */
    width: 100% !important;
    height: 100% !important;
    max-height: 350px !important;
}

.zoom-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    cursor: pointer;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.zoom-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    /* Let clicks pass to container */
}

.zoom-container:hover .zoom-overlay {
    opacity: 1;
}

#imageZoomModal {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999 !important;
    background: rgba(0, 0, 0, 0.4) !important;
    /* more transparent */
    backdrop-filter: blur(2px) !important;
}

.zoom-modal-container {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    transform: scale(0.01) rotate(15deg);
    transition: transform 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 3px solid rgba(255, 255, 255, 0.2);
    background: #fff;
    display: flex;
}

#imageZoomModal.active .zoom-modal-container {
    transform: scale(1) rotate(0deg);
}

.zoom-modal-container img,
.zoom-modal-container video {
    max-width: 100%;
    max-height: calc(90vh - 6px);
    /* account for border */
    border-radius: calc(var(--radius-md) - 3px);
    object-fit: contain;
}

.zoom-html-content {
    background: #2a2215;
    color: #f4f4f4;
    max-width: 800px;
    max-height: calc(90vh - 6px);
    overflow-y: auto;
    border-radius: calc(var(--radius-md) - 3px);
    padding: 30px;
}

.zoom-html-content::-webkit-scrollbar {
    width: 8px;
}

.zoom-html-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.zoom-html-content::-webkit-scrollbar-thumb {
    background: var(--patitas-red);
    border-radius: 4px;
}

.modal-close-zoom {
    position: absolute;
    top: -20px;
    right: -20px;
    font-size: 2.5rem;
    color: white;
    cursor: pointer;
    z-index: 100;
    background: var(--patitas-red);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    transition: transform 0.2s ease;
    line-height: 1;
}

.modal-close-zoom:hover {
    transform: scale(1.1);
}

.modal-img-fixed-height {
    height: 250px !important;
    object-fit: cover !important;
    width: 100% !important;
}

.modal-img-contain-fixed {
    height: 250px !important;
    object-fit: contain !important;
    width: 100% !important;
}

.modal-two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 25px 0;
    align-items: stretch;
}

.modal-column {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
}

.modal-download-box {
    text-align: center;
    margin: 15px 0;
    padding: 15px;
    background: rgba(43, 219, 219, 0.05);
    border: 1px dashed var(--patitas-cyan);
    border-radius: var(--radius-md);
    margin-top: auto;
    /* Push to bottom to align horizontally */
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--patitas-cyan) 0%, var(--patitas-green) 100%);
    color: #ffff00 !important;
    /* Bright yellow */
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8), 0 0 8px rgba(255, 255, 0, 0.5);
    /* Shadows for visibility */
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.95rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 10px rgba(43, 219, 219, 0.3);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(43, 219, 219, 0.5);
    color: #ffff00 !important;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.9), 0 0 10px rgba(255, 255, 0, 0.8);
}

@media (max-width: 768px) {
    .modal-two-columns {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    margin-bottom: 20px;
    color: var(--text-dim);
}

.modal-img-full {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--border-subtle);
}

/* YouTube Responsive iFrame Container */
.video-responsive {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: 30px;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.video-responsive iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Custom Scrollbar for Modal */
.modal-container::-webkit-scrollbar {
    width: 8px;
}

.modal-container::-webkit-scrollbar-track {
    background: var(--bg-card);
    border-top-right-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

.modal-container::-webkit-scrollbar-thumb {
    background: var(--circuit-blue);
    border-radius: 4px;
}


/* ── Carrusel de columnas (Tienda) ── */

/* Título de columna (arriba de la tarjeta) */
.carrusel-col-titulo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--multimeter-yellow);
    text-align: center;
    margin-top: 16px;
    margin-bottom: 0px;
    letter-spacing: 0.02em;
}

.carrusel-col {
    position: relative;
    overflow: hidden;
    align-self: start;
    /* inherits circuit-card layout; no extra overrides needed */
}

.carrusel-img-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 12px 0;
    z-index: 1;
}

.carrusel-img-wrap .circuit-card-img {
    margin: 0;
    /* override default auto margins — centering is handled by flex */
}

.carrusel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.35);
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
    padding: 0;
}

.carrusel-arrow:hover {
    background: rgba(241, 196, 15, 0.55);
    border-color: var(--multimeter-yellow);
    transform: translateY(-50%) scale(1.1);
}

.carrusel-arrow--left {
    left: 8px;
}

.carrusel-arrow--right {
    right: 8px;
}

.carrusel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 12px 0 4px;
    position: relative;
    z-index: 1;
}

.carrusel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.carrusel-dot:hover {
    background: rgba(241, 196, 15, 0.5);
    transform: scale(1.2);
}

.carrusel-dot.active {
    background: var(--multimeter-yellow);
    transform: scale(1.15);
    box-shadow: 0 0 6px rgba(241, 196, 15, 0.6);
}

/* Fade transition on carousel image */
.carrusel-img-wrap .circuit-card-img {
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.carrusel-img-wrap .circuit-card-img.carrusel-fade-out {
    opacity: 0;
    transform: scale(0.92);
}

/* Fade transition on carousel body */
.carrusel-col .circuit-card-body {
    transition: opacity 0.35s ease;
}

.carrusel-col .circuit-card-body.carrusel-body-fade {
    opacity: 0;
}

/* Carousel header height reduction & bottom-left tag badge positioning */
.carrusel-col::before {
    height: 160px !important;
}

.carrusel-col-titulo {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--multimeter-yellow);
    text-align: center;
    margin-top: 8px;
    margin-bottom: 2px;
    letter-spacing: 0.02em;
}

.carrusel-col .circuit-card-img {
    width: 115px;
    height: 115px;
}

.carrusel-img-wrap {
    padding: 2px 8px 0;
}

.carrusel-dots {
    padding: 2px 0 2px;
}

/* Position badge tag at the bottom-left of the header image circle */
.carrusel-col .card-tag {
    position: absolute !important;
    top: 128px !important;
    left: 10px !important;
    z-index: 5 !important;
    margin: 0 !important;
    font-size: 0.65rem !important;
    padding: 3px 8px !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.carrusel-col .circuit-card-body {
    position: static !important;
    padding: 8px 12px 10px;
    gap: 2px;
    display: flex;
    flex-direction: column;
    flex: 1 !important;
    min-height: 220px;
}

.carrusel-col .circuit-card-body h3 {
    margin-top: 2px !important;
    margin-bottom: 3px !important;
    font-size: 1.05rem !important;
}

/* Smaller description */
.carrusel-desc {
    font-size: 0.75rem !important;
    line-height: 1.35 !important;
    color: var(--text-muted);
    margin: 0 0 2px 0;
    flex: 0 0 auto !important;
}

/* Price + alias strictly in one row */
.carrusel-col .recurso-precio-row {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: 6px !important;
    flex-wrap: nowrap !important;
    margin: 2px 0 0 0 !important;
}

.carrusel-col .recurso-precio {
    font-size: 1.05rem !important;
    font-weight: 800 !important;
    color: var(--multimeter-yellow, #F1C40F) !important;
    white-space: nowrap !important;
    line-height: 1 !important;
}

.carrusel-col .recurso-alias {
    font-size: 0.65rem !important;
    color: var(--text-muted) !important;
    font-weight: 500 !important;
    white-space: nowrap !important;
}

.carrusel-col .recurso-alias b {
    color: var(--multimeter-yellow) !important;
    font-family: var(--font-mono) !important;
    font-size: 0.7rem !important;
}

/* Two buttons in one row close to price - optimized widths */
.carrusel-col .recurso-botones {
    margin-top: auto !important;
    display: block !important;
}

.recurso-botones-row {
    display: flex !important;
    gap: 5px !important;
    flex-wrap: nowrap !important;
}

.recurso-botones-row .btn-demo {
    flex: 0 0 28% !important;
    min-width: 0 !important;
    font-size: 0.75rem !important;
    padding: 6px 4px !important;
    text-align: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
}

.recurso-botones-row .btn-ws {
    flex: 1 !important;
    min-width: 0 !important;
    font-size: 0.72rem !important;
    padding: 6px 4px !important;
    text-align: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
}

/* Contact note below buttons — single line */
.carrusel-contacto {
    font-size: 0.65rem !important;
    color: var(--text-muted) !important;
    text-align: center !important;
    margin: 4px 0 0 !important;
    white-space: nowrap !important;
    flex-grow: 0 !important;
    display: block !important;
}

.carrusel-contacto a {
    color: var(--sky-blue, #5dade2);
    text-decoration: none;
}

/* ── Recursos (Tienda de Patitas) ── */
.card-tag-free {
    background: #14532d !important;
    color: #4ade80 !important;
}

.recurso-precio {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--multimeter-yellow, #F1C40F);
}

.recurso-precio span {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.recurso-botones {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}

.btn-demo,
.btn-mp,
.btn-mail {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    transition: transform .15s, filter .15s;
}

.btn-demo {
    background: rgba(41, 128, 185, .15);
    color: var(--sky-blue, #5dade2);
    border: 1px solid rgba(41, 128, 185, .4);
}

.btn-mp {
    background: linear-gradient(135deg, #009ee3, #0074c2);
    color: #fff;
}

.btn-gratis {
    background: linear-gradient(135deg, #16a34a, #15803d);
}

.btn-mail {
    background: rgba(255, 255, 255, .06);
    color: var(--text-muted);
    border: 1px dashed rgba(255, 255, 255, .25);
    font-weight: 600;
}

.btn-demo:hover,
.btn-mp:hover,
.btn-mail:hover {
    transform: translateY(-2px);
    filter: brightness(1.12);
}

.recurso-card:hover {
    cursor: default;
}

.compra-pasos {
    margin-top: 40px;
}

.compra-pasos h3 {
    margin-bottom: 16px;
}

.compra-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.alias-chip {
    font-family: var(--font-mono);
    background: rgba(241, 196, 15, .12);
    color: #F1C40F;
    padding: 2px 10px;
    border-radius: 100px;
    cursor: pointer;
    white-space: nowrap;
}

.recursos-nota {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 18px;
}

#demo-modal, #download-modal, #app-download-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

#demo-modal.open, #download-modal.open, #app-download-modal.open {
    display: flex;
}

.demo-box {
    position: relative;
    width: min(860px, 100%);
}

#download-modal .demo-box, #app-download-modal .demo-box {
    background: var(--bg-card, #2A2F45);
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .6);
    width: min(500px, 100%);
}

.demo-box video {
    width: 100%;
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .6);
    background: #000;
}

.demo-close {
    position: absolute;
    top: -14px;
    right: -14px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--patitas-red, #e74c3c);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    z-index: 2;
}


/* ── Móvil: el panel del menú nunca se corta (10 ítems + submenú) ── */
@media (max-width: 768px) {
    .nav-links {
        max-height: calc(100vh - 64px);
        max-height: calc(100dvh - 64px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
}

.comprobante-nota {
    color: var(--text-muted);
    font-size: .82rem;
    text-align: center;
    margin: 2px 0 0 0
}

.comprobante-nota a {
    color: var(--sky-blue, #5dade2);
    text-decoration: none
}

.btn-ws {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    transition: transform .15s, filter .15s;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: #fff;
}

.btn-ws:hover {
    transform: translateY(-2px);
    filter: brightness(1.12);
}@media (min-width: 768px) { .span-2-cols { grid-column: span 2; } }