:root {
    /* Paleta extraída visualmente de la imagen de referencia */
    --black: #090a0d;
    --deep-black: #0d0d12;
    --purple-dark: #40345d;
    --purple: #a064bd;
    --magenta: #ed5be8;
    --pink: #f875f1;
    --cyan: #63e1dc;
    --teal: #328d86;
    --blue: #24529a;
    --navy: #14216e;

    --text: #e9faff;
    --muted: #98a7b8;
    --line: rgba(99, 225, 220, 0.28);
    --glow-cyan: rgba(99, 225, 220, 0.45);
    --glow-pink: rgba(237, 91, 232, 0.42);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at 72% 35%, rgba(99, 225, 220, 0.10), transparent 25%),
        radial-gradient(circle at 25% 25%, rgba(237, 91, 232, 0.10), transparent 28%),
        linear-gradient(135deg, #090a0d 0%, #10111a 48%, #090a0d 100%);
    font-family: "Courier New", "Lucida Console", monospace;
    overflow-x: hidden;
}

/* Cuadrícula synthwave */
.grid-background {
    position: fixed;
    inset: 0;
    z-index: -3;
    opacity: 0.14;
    background-image:
        linear-gradient(rgba(99,225,220,.18) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,225,220,.18) 1px, transparent 1px);
    background-size: 45px 45px;
    transform: perspective(600px) rotateX(55deg) scale(1.7);
    transform-origin: bottom;
    mask-image: linear-gradient(to top, black, transparent 75%);
}

.scanlines {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 20;
    opacity: 0.045;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 3px,
        #fff 4px
    );
}

/* HEADER */
.site-header {
    position: relative;
    width: 100%;
    padding: 24px 35px 0;
    border-bottom: 1px solid var(--line);
    background: rgba(9, 10, 13, 0.88);
    backdrop-filter: blur(10px);
}

.logo-wrap {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 20px;
}

.logo-mark {
    color: var(--cyan);
    font-size: clamp(20px, 2vw, 30px);
    text-shadow: 0 0 12px var(--glow-cyan);
}

.logo-wrap h1 {
    color: #f7f8ff;
    font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
    font-size: clamp(32px, 5vw, 62px);
    letter-spacing: 7px;
    line-height: 1;
    text-shadow:
        3px 0 0 var(--purple),
        0 0 18px rgba(237, 91, 232, 0.35);
}

/* MENÚ SUPERIOR */
.top-menu {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    scrollbar-width: none;
}

.top-menu::-webkit-scrollbar {
    display: none;
}

.top-btn {
    position: relative;
    border: 1px solid rgba(99,225,220,.22);
    border-bottom: none;
    padding: 13px 20px;
    min-width: max-content;
    color: #aeb8c5;
    background: linear-gradient(180deg, rgba(63,52,93,.55), rgba(18,18,26,.85));
    font-family: inherit;
    font-weight: bold;
    letter-spacing: 1px;
    cursor: pointer;
    transition: .2s ease;
}

.top-btn:hover,
.top-btn.active {
    color: white;
    background: linear-gradient(180deg, rgba(237,91,232,.28), rgba(64,52,93,.65));
    border-color: var(--magenta);
    box-shadow: 0 -5px 20px rgba(237,91,232,.14);
}

.top-btn.active::after {
    content: "";
    position: absolute;
    left: 12%;
    right: 12%;
    bottom: -1px;
    height: 2px;
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan);
}

/* LAYOUT */
.app-layout {
    display: flex;
    min-height: calc(100vh - 145px);
}

/* SIDEBAR */
.sidebar {
    position: relative;
    width: 245px;
    flex: 0 0 245px;
    border-right: 1px solid rgba(99,225,220,.25);
    background: rgba(11, 12, 18, 0.92);
    transition: width .3s ease, flex-basis .3s ease;
    z-index: 5;
}

.sidebar-content {
    padding: 28px 18px;
}

.side-title {
    color: var(--cyan);
    margin-bottom: 15px;
    font-size: 11px;
    letter-spacing: 3px;
    opacity: .8;
}

.side-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    border: 1px solid transparent;
    padding: 13px 12px;
    margin-bottom: 6px;
    color: #a8b2c2;
    background: transparent;
    font-family: inherit;
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    transition: .2s ease;
}

.side-btn:hover,
.side-btn.active {
    color: white;
    border-color: rgba(237,91,232,.5);
    background: linear-gradient(90deg, rgba(237,91,232,.15), rgba(99,225,220,.06));
    transform: translateX(3px);
    text-shadow: 0 0 8px rgba(255,255,255,.25);
}

.side-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    color: var(--cyan);
    border: 1px solid rgba(99,225,220,.35);
    background: rgba(99,225,220,.05);
    font-weight: bold;
}

.side-status {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,.08);
    color: #697583;
    font-size: 9px;
    letter-spacing: 2px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan);
}

/* Botón hamburguesa */
.sidebar-toggle {
    position: absolute;
    top: 17px;
    right: -45px;
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--cyan);
    background: rgba(9,10,13,.94);
    cursor: pointer;
    z-index: 10;
}

.sidebar-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 4px auto;
    background: var(--cyan);
    box-shadow: 0 0 6px var(--cyan);
}

/* CONTENIDO */
.main-content {
    flex: 1;
    min-width: 0;
    /*padding: 10px 10px 10px;*/
}

.main-content iframe {
    display: block;

    width: 100%;
    height: calc(100vh - 157px);

    border: 1px solid rgba(99, 225, 220, 0.25);

    background: #090a0d;

    box-shadow:
        0 0 25px rgba(99, 225, 220, 0.08),
        inset 0 0 30px rgba(237, 91, 232, 0.04);
}

.hero-panel {
    width: min(1050px, 100%);
    margin: 0 auto;
}

.page-enter {
    animation: pageEnter .38s ease both;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.eyebrow {
    display: inline-block;
    margin-bottom: 18px;
    color: var(--cyan);
    font-size: 11px;
    letter-spacing: 3px;
    text-shadow: 0 0 10px var(--glow-cyan);
}

h2 {
    max-width: 850px;
    margin-bottom: 22px;
    font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
    font-size: clamp(42px, 7vw, 82px);
    line-height: .95;
    letter-spacing: 3px;
    color: #f5f6ff;
    text-shadow:
        3px 3px 0 rgba(160,100,189,.65),
        0 0 30px rgba(237,91,232,.18);
}

h2 span {
    color: var(--pink);
    text-shadow:
        0 0 10px rgba(248,117,241,.65),
        0 0 35px rgba(237,91,232,.25);
}

.intro {
    max-width: 730px;
    color: #abb7c6;
    font-family: Arial, sans-serif;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 35px;
}

/* TERMINAL */
.terminal-box {
    margin-bottom: 30px;
    border: 1px solid rgba(99,225,220,.3);
    background: rgba(7, 10, 14, .78);
    box-shadow:
        inset 0 0 30px rgba(99,225,220,.025),
        0 0 25px rgba(99,225,220,.04);
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    color: var(--teal);
    border-bottom: 1px solid rgba(99,225,220,.16);
    font-size: 10px;
    letter-spacing: 2px;
}

.terminal-body {
    padding: 22px;
    color: #a6d9d7;
    font-size: 13px;
    line-height: 2;
}

.prompt {
    color: var(--magenta);
    text-shadow: 0 0 8px var(--magenta);
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    margin-left: 5px;
    vertical-align: -2px;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan);
    animation: blink 1s steps(2) infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* CARDS */
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.info-card,
.content-placeholder {
    border: 1px solid rgba(160,100,189,.35);
    padding: 24px;
    background:
        linear-gradient(135deg, rgba(64,52,93,.25), rgba(10,12,18,.8));
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: "";
    position: absolute;
    width: 100px;
    height: 100px;
    top: -55px;
    right: -55px;
    border-radius: 50%;
    background: var(--magenta);
    filter: blur(35px);
    opacity: .12;
}

.info-card.cyan {
    border-color: rgba(99,225,220,.35);
}

.info-card.purple {
    border-color: rgba(237,91,232,.35);
}

.card-number {
    color: var(--teal);
    font-size: 10px;
}

.info-card h3 {
    margin: 15px 0 9px;
    font-size: 18px;
    color: #f2eaff;
    letter-spacing: 2px;
}

.info-card p {
    color: #8794a4;
    font-family: Arial, sans-serif;
    font-size: 13px;
    line-height: 1.6;
}

/* PÁGINAS INTERNAS */
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border: 1px solid rgba(99,225,220,.18);
    margin-bottom: 20px;
}

.module-line {
    padding: 15px;
    border-right: 1px solid rgba(99,225,220,.18);
}

.module-line:last-child {
    border-right: none;
}

.module-line span {
    display: block;
    margin-bottom: 7px;
    color: #687684;
    font-size: 9px;
    letter-spacing: 2px;
}

.module-line strong {
    color: var(--cyan);
    font-size: 12px;
}

.content-placeholder {
    min-height: 240px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border-color: rgba(237,91,232,.24);
}

.big-symbol {
    color: var(--magenta);
    font-size: 38px;
    margin-bottom: 12px;
    text-shadow: 0 0 20px var(--magenta);
}

.content-placeholder h3 {
    color: #eee9ff;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.content-placeholder p {
    max-width: 600px;
    color: #7f8a99;
    font-family: Arial, sans-serif;
    line-height: 1.7;
}

/* FOOTER */
footer {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 30px;
    border-top: 1px solid rgba(99,225,220,.15);
    background: #08090c;
    color: #4f5b68;
    font-size: 9px;
    letter-spacing: 2px;
}

/* RESPONSIVE */
@media (max-width: 850px) {
    .site-header {
        padding: 20px 18px 0;
    }

    .logo-wrap h1 {
        letter-spacing: 4px;
    }

    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: -245px;
        width: 245px;
        flex-basis: 245px;
        box-shadow: 12px 0 40px rgba(0,0,0,.55);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .main-content {
        padding: 45px 22px 65px;
    }

    .cards,
    .module-grid {
        grid-template-columns: 1fr;
    }

    .module-line {
        border-right: none;
        border-bottom: 1px solid rgba(99,225,220,.18);
    }

    .module-line:last-child {
        border-bottom: none;
    }

    footer {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 520px) {
    .top-btn {
        padding: 11px 13px;
        font-size: 10px;
    }

    h2 {
        font-size: 43px;
    }

    .intro {
        font-size: 14px;
    }
}