:root {
    --cyan: #5bbcc7;
    --cyan-bright: #00f2fe;
    --bg-dark: #020617;
    --bg-panel: #0f172a;
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --border: #334155;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;

    background: #020617;

    color: white;
    min-height: 100vh;
}

/* =========================
   FONDO GENERAL
========================= */

.main-background {
    background:
        linear-gradient(
            rgba(2, 6, 23, 0.55),
            rgba(2, 6, 23, 0.70)
        ),
        url("Online Mastering - Paolo Vos 7.jpg");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


/* =========================
   NAV
========================= */

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 15px 35px;

    background:
        linear-gradient(
            rgba(15, 23, 42, 0.95),
            rgba(2, 6, 23, 0.98)
        );

    border-bottom: 1px solid rgba(91, 188, 199, 0.35);

    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.6);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    width: 55px;
    height: 55px;
    object-fit: contain;
}

.logo span {
    color: #cbd5e1;
    font-size: 14px;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
}

.language-selector {
    position: relative;
    margin-left: 20px;
}

.language-button {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    color: #ffffff;
    transition: 0.25s ease;
}

.language-button svg {
    width: 19px;
    height: 19px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
}

.language-button:hover {
    color: #cbd5e1;
    filter: drop-shadow(0 0 6px rgba(203, 213, 225, 0.35));
}

.language-menu {
    display: none;
    position: absolute;
    top: 35px;
    right: 0;
    min-width: 70px;
    padding: 8px;
    background: #0f172a;
    border: 1px solid rgba(91, 188, 199, 0.5);
    border-radius: 6px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.6);
    z-index: 100;
}

.language-menu a {
    display: block;
    margin: 0;
    padding: 7px 10px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 12px;
    text-align: center;
}

.language-menu a:hover {
    color: #cbd5e1;
    background: rgba(203, 213, 225, 0.08);
}

.language-selector:hover .language-menu {
    display: block;
}

nav a {
    color: #94a3b8;
    margin-left: 25px;

    text-decoration: none;

    font-size: 13px;
    letter-spacing: 1px;

    transition: 0.25s ease;
}

nav a:hover {
    color: #cbd5e1;

    text-shadow:
        0 0 8px rgba(203, 213, 225, 0.35);
}


/* =========================
   HERO
========================= */

.hero {
    position: relative;

    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 500px;
    padding: 70px 20px;

    background: transparent;
}

.hero-text {
    width: 90%;
    max-width: 700px;

    padding: 45px 35px;

    text-align: center;

    background:
        linear-gradient(
            rgba(2, 6, 23, 0.45),
            rgba(2, 6, 23, 0.65)
        ),
        url("Online Mastering - Paolo Vos 6.jpg");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    border: 1px solid #ff8c00;
    border-radius: 20px;

    box-shadow:
        0 0 8px rgba(255, 140, 0, 0.85),
        0 0 20px rgba(255, 140, 0, 0.65),
        0 0 40px rgba(255, 140, 0, 0.35);
}

.hero h1 {
    margin: 0 0 18px;

    font-size: 42px;
    font-weight: 300;
    letter-spacing: 2px;

    color: white;

    text-shadow:
        0 0 5px rgba(91, 188, 199, 0.85),
        0 0 12px rgba(91, 188, 199, 0.65),
        0 0 25px rgba(91, 188, 199, 0.45);
}

.hero h1 span {
    color: #cbd5e1;

    text-shadow:
        0 0 6px rgba(203, 213, 225, 0.45),
        0 0 14px rgba(203, 213, 225, 0.25);
}

.hero p {
    margin: 0;

    color: #94a3b8;

    font-size: 15px;
    letter-spacing: 1px;
    line-height: 1.6;
}


/* =========================
   BUTTON
========================= */

.btn {
    display: inline-block;

    margin-top: 25px;
    padding: 12px 28px;

    color: #cbd5e1;

    background:
        linear-gradient(
            135deg,
            #0f172a,
            #020617
        );

    border: 1px solid #94a3b8;
    border-radius: 6px;

    text-decoration: none;

    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;

    box-shadow:
        0 0 8px rgba(148, 163, 184, 0.25);

    transition: 0.25s ease;
}

.btn:hover {
    color: #1a1205;

    background: #d6a84f;

    box-shadow:
        0 0 10px rgba(214, 168, 79, 0.65),
        0 0 25px rgba(214, 168, 79, 0.35);

    transform: translateY(-2px);
}

/* =========================
   SECTION TITLE
========================= */

.section-title {
    padding: 35px 20px 15px;

    text-align: center;

    background: transparent;
}

.section-title h2 {
    margin: 0;

    font-size: 25px;
    font-weight: 300;
    letter-spacing: 2px;

    color: #64748b;

    text-shadow:
        0 0 6px rgba(100, 116, 139, 0.3);
}


/* =========================
   CARDS
========================= */

.cards {
    display: flex;
    gap: 20px;
    padding: 30px 40px 30px;

    background: transparent;
}
/* LOS TRES BLOQUES COMPARTEN
   EXACTAMENTE LA MISMA ILUMINACIÓN */

.card {
    position: relative;

    flex: 1;
    min-width: 250px;

    padding: 25px;

    background: #020617;

    border: 1px solid #5bbcc7;
    border-radius: 12px;

    color: white;
    text-decoration: none;

    cursor: pointer;

    box-shadow:
        inset 0 1px 1px rgba(255, 255, 255, 0.05),
        0 0 8px rgba(91, 188, 199, 0.35),
        0 0 20px rgba(91, 188, 199, 0.18),
        0 8px 20px rgba(0, 0, 0, 0.5);

    transition:
        transform 0.25s ease,
        border-color 0.25s ease,
        box-shadow 0.25s ease;
}

/* =========================
   FONDOS INDIVIDUALES
========================= */

/* 1. DERECHOS MUSICALES */
.card:nth-child(1) {
    background:
        linear-gradient(
            rgba(2, 6, 23, 0.72),
            rgba(2, 6, 23, 0.88)
        ),
        url("Online Mastering - Paolo Vos 4.jpg");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


/* 2. MASTERING ONLINE */
.card:nth-child(2) {
    background:
        linear-gradient(
            rgba(2, 6, 23, 0.72),
            rgba(2, 6, 23, 0.88)
        ),
        url("Online Mastering - Paolo Vos 1.jpg");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


/* 3. DISTRIBUCIÓN DIGITAL */
.card:nth-child(3) {
    background:
        linear-gradient(
            rgba(2, 6, 23, 0.72),
            rgba(2, 6, 23, 0.88)
        ),
        url("Online Mastering - Paolo Vos 5.jpg");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}


/* ILUMINACIÓN UNIFORME PARA LOS TRES */

.card:hover {
    transform: translateY(-6px);

    border-color: #00f2fe;

    box-shadow:
        0 0 8px rgba(0, 242, 254, 0.75),
        0 0 20px rgba(0, 242, 254, 0.50),
        0 0 40px rgba(0, 242, 254, 0.25),
        0 12px 30px rgba(0, 0, 0, 0.7);
}


/* =========================
   CARD HEADER
========================= */

.card-header {
    display: flex;
    align-items: flex-start;

    gap: 15px;
}


/* MISMA LUZ PARA LOS TRES ICONOS */

.icon {
    width: 52px;
    height: 52px;

    flex-shrink: 0;

    display: flex;
    align-items: center;
    justify-content: center;

    background: transparent;
    border: none;
    border-radius: 0;

    box-shadow: none;
}

.icon img {
    width: 27px;
    height: 27px;

    object-fit: contain;

    filter: brightness(0) saturate(100%) invert(65%);
}


/* =========================
   CARD TEXT
========================= */

.card h3 {
    margin: 2px 0 7px;

    font-size: 18px;
    font-weight: 500;

    letter-spacing: 0.5px;

    color: #cbd5e1;
}

.description {
    margin: 0;

    color: #94a3b8;

    font-size: 13px;
    line-height: 1.5;
}


/* =========================
   FEATURES
========================= */

.features {
    padding: 0;
    margin: 22px 0 0;

    list-style: none;
}

.features li {
    position: relative;

    padding-left: 20px;
    margin-bottom: 9px;

    color: #cbd5e1;

    font-size: 13px;
}

.features li::before {
    content: "✔";

    position: absolute;
    left: 0;

    color: #00f2fe;

    font-size: 11px;

    text-shadow:
        0 0 6px rgba(0, 242, 254, 0.7);
}


/* =========================
   MOBILE
========================= */

@media (max-width: 768px) {

    nav {
        padding: 12px 18px;
    }

    .logo img {
        width: 45px;
        height: 45px;
    }

    .logo span {
        font-size: 12px;
    }

    /* MOSTRAR NAVEGACIÓN EN CELULAR */
    .nav-links {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    nav a {
        margin-left: 10px;
        font-size: 11px;
        letter-spacing: 0.5px;
    }

    .language-selector {
        margin-left: 5px;
    }

    .language-button {
        padding: 5px;
    }

    .language-button svg {
        width: 18px;
        height: 18px;
    }

    .hero {
        min-height: 450px;
        padding: 40px 15px;
    }

    .hero-text {
        width: 95%;
        padding: 35px 20px;
        border-radius: 16px;
    }

    .hero h1 {
        font-size: 31px;
        line-height: 1.25;
    }

    .hero p {
        font-size: 13px;
    }

    .cards {
        flex-direction: column;
        padding: 20px;
    }

    .card {
        width: 100%;
        min-width: 0;
    }

    .section-title {
        padding-top: 30px;
    }
}

.footer {
    padding: 25px 20px 100px;
    text-align: center;
    background: #020617;
    border-top: 1px solid rgba(91, 188, 199, 0.2);
    color: #64748b;
    font-size: 12px;
    letter-spacing: 1px;
}

.footer span {
    font-size: 10px;
    vertical-align: super;
}