:root {
    /* Fondo casi negro-verdoso, como el anillo exterior del sello */
    --color-bg: #0D1917;
    --color-bg-soft: #14211E;
    --color-surface: #182523;

    /* Verde petróleo — ahora usado para bloques sólidos (footer, campus, botones) */
    --color-primary: #16332F;
    --color-primary-dark: #0D211E;
    --color-primary-light: #2C5049;

    /* Bronce, único acento brillante */
    --color-accent: #C9A468;
    --color-accent-dark: #E8C98A;
    --color-accent-light: #DCC08F;

    /* Texto */
    --color-heading: #F1EBDA;
    --color-white: #F7F3E8;
    --color-text: #E4DECB;
    --color-text-light: #93A79D;
    --color-border: rgba(241, 235, 218, 0.14);

    --radius-medium: 20px;
    --radius-large: 28px;
    --transition: all 0.35s ease;
    --container-width: 1200px;

    --shadow-soft:
        0 15px 40px rgba(0, 0, 0, 0.35);

    --shadow-medium:
        0 20px 55px rgba(0, 0, 0, 0.45);
}

/* =========================================================
   RESET
========================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
}

.container {
    width: min(calc(100% - 40px), var(--container-width));
    margin-inline: auto;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(13, 25, 23, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(22, 51, 47, 0.08);
    transition: var(--transition);
}

.navbar {
    width: min(calc(100% - 40px), var(--container-width));
    height: 82px;
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo img {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: 50%;
    transition: var(--transition);
}

.logo:hover img {
    transform: scale(1.03);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
}

.logo-text strong {
    color: var(--color-heading);
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.logo-text em {
    color: var(--color-accent);
    font-size: 11px;
    font-weight: 600;
    font-style: normal;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-campus {
    margin-left: 8px;
    padding: 11px 20px !important;
    border-radius: 50px;
    background: var(--color-accent);
    color: var(--color-primary-dark) !important;
    box-shadow: 0 7px 22px rgba(201, 164, 104, 0.30);
    transition: var(--transition);
}

.btn-campus:hover {
    background: var(--color-accent-dark);
    color: var(--color-primary-dark) !important;
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(201, 164, 104, 0.4);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    padding: 120px 40px 70px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 50px;
    overflow: hidden;
    background:
        radial-gradient(circle at 20% 50%, rgba(169, 138, 84, 0.14), transparent 35%),
        linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
}

.hero::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    border: 1px solid rgba(169, 138, 84, 0.18);
    left: -250px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: rgba(22, 51, 47, 0.05);
    right: -150px;
    bottom: -150px;
    pointer-events: none;
}

.hero-main {
    position: relative;
    z-index: 2;
    width: min(1200px, 100%);
    margin: 0 auto;
    display: flex;
    justify-content: center;
}

.hero-radial {
    position: relative;
    width: min(760px, 100%);
    height: 780px;
    transform-origin: center top;
}

@media (min-width: 951px) and (max-height: 820px) {
    .hero-radial { transform: scale(0.82); }
}

@media (min-width: 951px) and (max-height: 680px) {
    .hero-radial { transform: scale(0.68); }
}

.hero-floating-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 430px;
    height: 430px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: floatingLogo 6s ease-in-out infinite;
}

.logo-orbit {
    position: absolute;
    width: 390px;
    height: 390px;
    border-radius: 50%;
    border: 1px solid rgba(169, 138, 84, 0.4);
    transform: rotate(-15deg);
    box-shadow: 0 0 80px rgba(169, 138, 84, 0.10);
}

.logo-orbit::before {
    content: "";
    position: absolute;
    inset: 20px;
    border-radius: 50%;
    border: 1px dashed rgba(22, 51, 47, 0.14);
}

.logo-container {
    position: relative;
    z-index: 3;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border-radius: 50%;
    background: rgba(20, 32, 30, 0.9);
    border: 8px solid rgba(169, 138, 84, 0.2);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15);
    transition: transform .4s ease, box-shadow .4s ease;
}

.logo-container:hover {
    transform: scale(1.04);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.20);
}

.logo-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity .25s ease, transform .35s ease;
}

@keyframes floatingLogo {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, calc(-50% - 12px)); }
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 620px;
    height: 620px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px dashed rgba(169, 138, 84, 0.35);
    pointer-events: none;
}

.orbit-ring::before {
    content: "";
    position: absolute;
    inset: -14px;
    border-radius: 50%;
    border: 1px solid rgba(233, 227, 210, 0.06);
}

.hero-subjects {
    position: absolute;
    inset: 0;
}

.orbit-item {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy)));
}

.orbit-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.orbit-link:hover {
    transform: translateY(-8px);
}

.orbit-link:active {
    transform: translateY(-2px) scale(0.97);
}

.orbit-link.active {
    transform: translateY(-6px);
}

.subject-button {
    position: relative;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    display: block;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.45);
    transition: var(--transition);
}

.subject-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
    display: block;
}

.orbit-link:hover .subject-button {
    box-shadow: 0 22px 38px rgba(0, 0, 0, 0.55), 0 0 0 4px rgba(201, 164, 104, 0.35);
}

.orbit-link.active .subject-button {
    box-shadow: 0 20px 36px rgba(0, 0, 0, 0.5), 0 0 0 4px rgba(233, 227, 210, 0.4);
}

.subject-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-heading);
    text-align: center;
    line-height: 1.2;
    letter-spacing: 0.3px;
}

.orbit-link.active .subject-label,
.orbit-link:hover .subject-label {
    color: var(--color-accent-light);
}

.hero-subject-info {
    position: relative;
    z-index: 3;
    width: min(850px, calc(100% - 30px));
    min-height: 130px;
    margin: 0 auto;
    padding: 22px 30px;
    text-align: center;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.07);
    transition: opacity .3s ease, transform .3s ease;
}

.subject-name {
    display: block;
    margin-bottom: 7px;
    color: var(--color-accent-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.subject-quote {
    display: block;
    margin: 0 auto;
    max-width: 700px;
    color: var(--color-heading);
    font-size: 18px;
    line-height: 1.5;
    font-style: italic;
}

.subject-author {
    display: block;
    margin-top: 8px;
    color: var(--color-text-light);
    font-size: 13px;
    font-weight: 600;
}

.hero-subject-info.changing { opacity: 0; transform: translateY(8px); }
.logo-container.changing img { opacity: 0; transform: scale(.75) rotate(-8deg); }

/* =========================================================
   PRESENTACIÓN
========================================================= */

.presentation { padding: 90px 20px; background: var(--color-surface); }
.presentation-container { width: min(calc(100% - 20px), 900px); margin-inline: auto; text-align: center; }
.presentation .section-tag { display: inline-block; margin-bottom: 14px; color: var(--color-accent-dark); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; }
.presentation h1 { font-size: clamp(34px, 5vw, 52px); color: var(--color-heading); letter-spacing: -1.5px; margin-bottom: 20px; }
.presentation h1 span { color: var(--color-accent); }
.presentation p { max-width: 640px; margin: 0 auto 30px; color: var(--color-text-light); }
.presentation-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.btn-primary { padding: 14px 26px; border-radius: 50px; background: var(--color-accent); color: var(--color-primary-dark); box-shadow: 0 10px 30px rgba(201, 164, 104, 0.25); transition: var(--transition); display: inline-block; }
.btn-primary:hover { transform: translateY(-3px); background: var(--color-accent-dark); box-shadow: 0 15px 35px rgba(201, 164, 104, 0.35); }
.btn-secondary { padding: 14px 26px; border-radius: 50px; border: 1px solid var(--color-border); background: rgba(255, 255, 255, 0.05); color: var(--color-heading); transition: var(--transition); display: inline-block; }
.btn-secondary:hover { background: var(--color-surface); border-color: var(--color-accent); transform: translateY(-3px); }

/* =========================================================
   SECCIONES GENERALES
========================================================= */

.section { padding: 110px 20px; }
.section-header { max-width: 700px; margin: 0 auto 55px; text-align: center; }
.section-tag { display: inline-block; margin-bottom: 12px; color: var(--color-accent-dark); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; }
.section-header h2 { font-size: clamp(34px, 5vw, 52px); line-height: 1.1; color: var(--color-heading); margin-bottom: 20px; letter-spacing: -1.5px; }
.section-header h2 span { color: var(--color-accent); }
.section-header p { color: var(--color-text-light); font-size: 16px; }

/* MATERIAS */
.materias { background: var(--color-bg); }
.materias-grid { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.materia-card { position: relative; padding: 30px 25px; border: 1px solid var(--color-border); border-radius: var(--radius-medium); background: var(--color-surface); overflow: hidden; transition: var(--transition); }
.materia-card::before { content: ""; position: absolute; width: 100px; height: 100px; border-radius: 50%; background: var(--color-accent); opacity: 0.10; top: -50px; right: -50px; }
.materia-card:hover { transform: translateY(-8px); border-color: rgba(169, 138, 84, 0.45); box-shadow: var(--shadow-medium); }
.materia-icon { width: 70px; height: 70px; display: flex; align-items: center; justify-content: center; padding: 14px; margin-bottom: 25px; border-radius: 18px; background: var(--color-bg); font-size: 30px; }
.materia-icon img { width: 100%; height: 100%; object-fit: contain; }
.materia-content span { font-size: 11px; font-weight: 700; color: var(--color-accent-dark); text-transform: uppercase; letter-spacing: 1px; }
.materia-content h3 { margin: 6px 0 12px; color: var(--color-heading); font-size: 22px; }
.materia-content p { color: var(--color-text-light); font-size: 14px; margin-bottom: 20px; }
.card-link { color: var(--color-heading); font-size: 13px; font-weight: 800; transition: var(--transition); }
.card-link:hover { color: var(--color-accent-dark); letter-spacing: 0.3px; }

/* INSTITUCIÓN */
.institution { background: var(--color-surface); }
.institution-container { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; align-items: center; }
.institution-image { position: relative; min-height: 480px; display: flex; align-items: center; justify-content: center; }
.institution-image img { position: relative; z-index: 2; width: 300px; height: 300px; object-fit: contain; padding: 30px; border-radius: 40px; background: var(--color-bg); box-shadow: var(--shadow-medium); }
.image-decoration { position: absolute; width: 350px; height: 350px; border: 2px solid var(--color-accent); border-radius: 40px; transform: rotate(8deg); opacity: 0.45; }
.institution-content h2 { max-width: 600px; font-size: clamp(36px, 5vw, 52px); line-height: 1.1; color: var(--color-heading); margin-bottom: 25px; }
.institution-content h2 span { color: var(--color-accent); }
.institution-content p { max-width: 650px; color: var(--color-text-light); margin-bottom: 18px; }
.institution-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-top: 35px; }
.feature { display: flex; align-items: center; gap: 12px; padding: 15px; border-radius: 12px; background: rgba(255, 255, 255, 0.05); }
.feature strong { color: var(--color-accent-dark); font-size: 13px; }
.feature span { font-size: 13px; font-weight: 600; color: var(--color-heading); }

/* POR QUÉ ELEGIRNOS */
.why-us { background: var(--color-bg); }
.advantages-grid { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.advantage-card { padding: 30px; border-radius: var(--radius-medium); background: var(--color-surface); border: 1px solid transparent; transition: var(--transition); }
.advantage-card:hover { border-color: rgba(169, 138, 84, 0.4); transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.advantage-number { margin-bottom: 25px; color: var(--color-accent); font-size: 13px; font-weight: 800; }
.advantage-card h3 { color: var(--color-heading); margin-bottom: 12px; font-size: 20px; }
.advantage-card p { color: var(--color-text-light); font-size: 14px; }

/* CAPACITACIONES */
.training { background: var(--color-surface); }
.training-container { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: 1fr 0.65fr; align-items: center; gap: 80px; }
.training-content h2 { font-size: clamp(36px, 5vw, 54px); line-height: 1.1; color: var(--color-heading); margin-bottom: 22px; }
.training-content h2 span { display: block; color: var(--color-accent); }
.training-content p { max-width: 600px; color: var(--color-text-light); margin-bottom: 30px; }
.training-card { padding: 40px; background: var(--color-primary); color: var(--color-white); border-radius: var(--radius-large); box-shadow: var(--shadow-medium); transition: var(--transition); }
.training-card:hover { transform: translateY(-8px); }
.training-icon { width: 80px; height: 80px; padding: 15px; display: flex; align-items: center; justify-content: center; border-radius: 20px; background: rgba(255, 255, 255, 0.12); margin-bottom: 25px; font-size: 32px; }
.training-icon img { width: 100%; height: 100%; object-fit: contain; }
.training-card h3 { font-size: 30px; margin-bottom: 10px; }
.training-card p { color: rgba(255, 255, 255, 0.75); margin-bottom: 25px; }
.training-card .card-link { color: var(--color-accent-light); }

/* CAMPUS VIRTUAL */
.campus { padding: 100px 20px; background: var(--color-primary); color: var(--color-white); overflow: hidden; }
.campus-container { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: 1fr 0.7fr; align-items: center; gap: 80px; }
.campus-content .section-tag { color: var(--color-accent-light); }
.campus-content h2 { font-size: clamp(38px, 5vw, 58px); line-height: 1.1; margin-bottom: 22px; }
.campus-content h2 span { color: var(--color-accent-light); }
.campus-content p { max-width: 560px; color: rgba(255, 255, 255, 0.75); margin-bottom: 30px; font-size: 17px; }
.btn-campus-large { display: inline-flex; padding: 15px 25px; border-radius: 50px; background: var(--color-accent); color: var(--color-heading); font-weight: 800; transition: var(--transition); }
.btn-campus-large:hover { background: var(--color-accent-light); transform: translateY(-3px); }
.campus-visual { display: flex; justify-content: center; align-items: center; }
.campus-visual img { width: 250px; height: 250px; object-fit: contain; padding: 30px; border-radius: 50%; background: var(--color-surface); box-shadow: 0 20px 70px rgba(0, 0, 0, 0.5); }

/* CONTACTO */
.contact { background: var(--color-surface); }
.contact-grid { width: min(calc(100% - 20px), 900px); margin-inline: auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-item { padding: 30px; text-align: center; border: 1px solid var(--color-border); border-radius: var(--radius-medium); transition: var(--transition); }
.contact-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); border-color: rgba(169, 138, 84, 0.4); }
.contact-icon { display: block; margin-bottom: 15px; font-size: 30px; }
.contact-item h3 { color: var(--color-heading); margin-bottom: 8px; }
.contact-item p { color: var(--color-text-light); font-size: 14px; }

/* FOOTER */
.footer { background: var(--color-primary); color: var(--color-white); padding: 70px 20px 0; }
.footer-container { width: min(calc(100% - 20px), var(--container-width)); margin-inline: auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 60px; padding-bottom: 50px; }
.footer-brand img { width: 140px; margin-bottom: 15px; background: var(--color-surface); padding: 8px; border-radius: 10px; }
.footer-brand p { max-width: 300px; color: rgba(255, 255, 255, 0.65); font-size: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 9px; }
.footer-links h4 { margin-bottom: 10px; color: var(--color-accent-light); }
.footer-links a { color: rgba(255, 255, 255, 0.7); font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--color-white); transform: translateX(3px); }
.footer-bottom { padding: 20px; text-align: center; border-top: 1px solid rgba(255, 255, 255, 0.1); }
.footer-bottom p { color: rgba(255, 255, 255, 0.5); font-size: 12px; }

/* =========================================================
   RESPONSIVE (resumido)
========================================================= */

@media (max-width: 950px) {
    .hero-radial { width: min(560px, 100%); height: 580px; }
    .orbit-ring { width: 450px; height: 450px; }
    .hero-floating-logo { width: 340px; height: 340px; }
    .logo-orbit { width: 310px; height: 310px; }
    .logo-container { width: 248px; height: 248px; padding: 18px; }
    .orbit-item { transform: translate(calc(-50% + var(--dx-t)), calc(-50% + var(--dy-t))); }
    .subject-button { width: 115px; height: 115px; padding: 0; }
    .materias-grid, .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); max-width: 620px; }
}

@media (max-width: 768px) {
    .navbar { height: 72px; width: calc(100% - 30px); }
    .logo img { width: 46px; height: 46px; }
    .logo-text strong { font-size: 14px; }
    .logo-text em { font-size: 9px; }
    .btn-campus { padding: 9px 14px !important; font-size: 13px; }
    .hero { min-height: auto; padding: 125px 20px 70px; gap: 25px; }
    .hero-radial { position: static; width: 100%; height: auto; }
    .orbit-ring { display: none; }
    .hero-floating-logo { position: relative; top: auto; left: auto; transform: none; width: 290px; height: 290px; margin: 0 auto; }
    @keyframes floatingLogo { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
    .logo-orbit { width: 260px; height: 260px; }
    .logo-container { width: 219px; height: 219px; padding: 16px; }
    .hero-subjects { position: static; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 0; margin-top: 25px; justify-items: center; }
    .orbit-item { position: static; transform: none; }
    .orbit-item:last-child { grid-column: 1 / -1; }
    .subject-button { width: 130px; height: 130px; padding: 0; }
    .hero-subject-info { width: 100%; margin-top: 0; padding: 20px 18px; border-radius: 18px; }
    .subject-quote { font-size: 15px; }
    .section { padding: 80px 20px; }
    .materias-grid, .advantages-grid { grid-template-columns: 1fr; }
    .institution-container, .training-container, .campus-container { grid-template-columns: 1fr; gap: 45px; }
    .institution-image { min-height: 320px; }
    .institution-image img { width: 220px; height: 220px; padding: 22px; }
    .image-decoration { width: 260px; height: 260px; }
    .institution-content h2 { font-size: 34px; }
    .institution-features { grid-template-columns: 1fr; }
    .training-card { padding: 28px; }
    .campus-container { text-align: center; }
    .campus-content p { margin-inline: auto; }
    .campus-visual img { width: 190px; height: 190px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; gap: 35px; }
    .footer-brand { text-align: center; }
    .footer-brand img, .footer-brand p { margin-inline: auto; }
    .footer-links { align-items: center; text-align: center; }
}

@media (max-width: 400px) {
    .hero-floating-logo { width: 250px; height: 250px; }
    .logo-orbit { width: 225px; height: 225px; }
    .logo-container { width: 190px; height: 190px; padding: 14px; }
    .subject-button { width: 110px; height: 110px; padding: 0; }
    .presentation h1 { font-size: 34px; }
}

/* =========================================================
   CONTACTO — item como link (WhatsApp)
========================================================= */

.contact-item-link {
    display: block;
    text-decoration: none;
    cursor: pointer;
}

.contact-item-link:hover .contact-icon {
    transform: scale(1.1);
}

/* =========================================================
   BOTÓN FLOTANTE DE WHATSAPP
========================================================= */

.whatsapp-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 999;

    width: 60px;
    height: 60px;

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

    border-radius: 50%;

    background: #25D366;
    color: var(--color-white);

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

    animation: whatsappPulse 2.4s ease-in-out infinite;

    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
}

@keyframes whatsappPulse {
    0%, 100% {
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 0 0 rgba(37, 211, 102, 0.5);
    }
    50% {
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 0 10px rgba(37, 211, 102, 0);
    }
}

@media (max-width: 700px) {
    .whatsapp-float {
        right: 16px;
        bottom: 16px;
        width: 54px;
        height: 54px;
    }
}